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High-efficiency Photocatalytic Performance of Bi/Bi2Fe4O9Nanocomposites Synthesized by Hydrothermal Method for Degradation of Bisphenol A 认领 引用
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作者 WANG Junjie LI Yijie +1 位作者 LI Xinyi GUO Dongyun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第2期364-370,共7页
Bi/Bi2Fe4O9nanocomposites consisting of Bi2Fe4O9nanosheets decorated with Bi nanodots were synthesized by a hydrothermal method.The formation of Bi nanodots on the Bi2Fe4O9nanosheet surfaces... Bi/Bi2Fe4O9nanocomposites consisting of Bi2Fe4O9nanosheets decorated with Bi nanodots were synthesized by a hydrothermal method.The formation of Bi nanodots on the Bi2Fe4O9nanosheet surfaces was attributed to the reducibility of 2-methoxyethanol in the precursor solution.Comparative photocatalytic evaluation reveals that the Bi/Bi2Fe4O9nanocomposites significantly enhance the degradation efficiency(99.0%)of bisphenol A compared with Bi2Fe4O9nanosheets(64.2%)under 120 min simulated solar irradiation.This remarkable enhancement can be attributed to the established Bi/Bi2Fe4O9heterojunction structure,which effectively facilitates the separation of photogenerated electron-hole pairs and accelerates interfacial charge transfer between the metallic Bi nanodots and semiconductor Bi2Fe4O9nanosheets.The synergistic effects arising from this unique architecture ultimately lead to superior photocatalytic performance. 展开更多
关键词 Bi2Fe4O9 nanosheets Bi nanodots nanocomposite hydrothermal method photocatalytic performance
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High-Coercivity Nd2Fe14B/α-Fe Nanocomposites With Ultrafine Nanocrystalline Structure via Zr-Induced Synchronous Precipitation 认领 引用
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作者 Xiaowei Zhang Jun Li +4 位作者 Chang Liu Renquan Wang Hongfu Liu Xiaotao Bao Ying Liu 《Rare Metals》 SCIE EI CAS CSCD 2026年第2期446-458,共13页
Nanocomposite permanent magnets with reduced rare-earth content represent a promising class of materials for next-generation high-performance applications.However,asynchronous precipitation of soft and hard magnetic p... Nanocomposite permanent magnets with reduced rare-earth content represent a promising class of materials for next-generation high-performance applications.However,asynchronous precipitation of soft and hard magnetic phases often results in grain size mismatch and limited coercivity.In this study,zirconium is utilized to modulate the eutectic reaction temperature among the soft magnetic,hard magnetic,and boron-rich phases,aligning it with the solidification point of the hard phase.This thermal alignment enables synchronous precipitation,leading to the formation of ultrafine dual-phase nanocomposites with an average grain size of approximately 20 nm and a 75.8% improvement in coercivity.Furthermore,zirconium addition induces the formation of a ferromagnetic ZrFe2 three-dimensional network that encapsulates both soft and hard magnetic grains,significantly enhancing intergranular exchange coupling and magnetization uniformity.The synergistic effects of grain refinement and phase compatibility result in the concurrent enhancement of coercivity and energy product,while substantially lowering rare-earth consumption.These findings offer a practical strategy for grain size synchronization and phase integration in multiphase nanocomposites. 展开更多
关键词 coercivity Nd2Fe14B/α-Fe nanocomposite synchronous nucleation ultrafine nanocrystalline ZrFe2phase
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Multidimensional construction of 1T-MoS2@graphene nanosheets nanocomposites for enhanced electromagnetic wave absorption 认领 引用 被引量：17
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作者 Jia Zhao Mukun He +3 位作者 Hua Guo Yali Zhang Hua Qiu Haoran Lai 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第15期35-44,共10页
The preparation of electromagnetic(EM)wave absorption materials provided with the characteristics of thin matching thickness,broad bandwidth,and mighty absorption intensity is an efficient solution to current EM pollu... The preparation of electromagnetic(EM)wave absorption materials provided with the characteristics of thin matching thickness,broad bandwidth,and mighty absorption intensity is an efficient solution to current EM pollution.Herein,Graphene nanosheets(GN)were firstly fabricated via a facile high-energy ball milling method,subsequently high-purity 1T-MoS2 petals were uniformly anchored on the surface of GN to prepare 1T-MoS2@GN nanocomposites.Plentiful multiple reflection and scattering of EM waves in a distinctive multidimensional structure formed by GN and 1T-MoS2,copious polarization loss consisting of interfacial polarization loss and dipolar polarization loss severally derived from multitudinous heterointerfaces and profuse electric dipoles in 1T-MoS2@GN,and mighty conduction loss originated from plentiful induced current in 1T-MoS2@GN generated via the migration of massive electrons,all of which endowed 1T-MoS2@GN nanocomposites with exceptional EM wave absorption performances.The minimum reflection loss(RLmin)of 1T-MoS2@GN reached–50.14 dB at a thickness of only 2.10 mm,and the effective absorption bandwidth(EAB)was up to 6.72 GHz at an ultra-thin matching thickness of 1.84 mm.Moreover,the radar scattering cross section(RCS)reduction value of 36.18 dB m2 at 0°could be achieved as well,which ulteriorly validated the tremendous potential of 1T-MoS2@GN nanocomposites in practical applications. 展开更多
关键词 1T-MoS2@GN nanocomposites Conduction loss Polarization loss EM wave absorption
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Green synthesis of cyclic carbonates:ZnV2O6@Bi2WO6nanocomposite photocatalyst for efficient CO2epoxidation 认领 引用 被引量：1
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作者 Yunlin Li Jing Jiang +3 位作者 Chaosheng Zhu Wenli Feng Songfang Han Lili Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第8期665-677,共13页
The present levels of CO2emission in the atmosphere require the development of technologies to achieve carbon neutrality using inexpensive processes.Conversion of CO2into cyclic carbonates is one of the solution... The present levels of CO2emission in the atmosphere require the development of technologies to achieve carbon neutrality using inexpensive processes.Conversion of CO2into cyclic carbonates is one of the solutions to this problem.Here,we synthesized a ZnV2O6/Bi2WO6nanocomposite and catalyzed the cycloaddition of CO2to epoxides for the green synthesis of cyclic carbonates under visible light irradiation.The present nanocomposite photocatalyst exhibited up to 96%yield of cyclic carbonates.The photocatalyst was found to be efficient for photocatalytic cycloaddition reactions,and the recovered photocatalyst showed stability in up to five consecutive photocatalytic experiments.The current methodology of cyclic carbonate production is a significant step toward the mitigation of atmospheric CO2and can work well with the development of nanocomposite photocatalysts. 展开更多
关键词 Nanocomposite photocatalyst CO2mitigation Green chemistry Cyclic carbonates Sustainable conversion
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In-situ growth of 3D amorphous Ni-Co-Mn phosphate on 2D Ti3C2Tx nanocomposite for commercial-level hybrid energy storage application 认领 引用 被引量：1
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作者 Pranav K.Katkar Zulfqar Ali Sheikh +1 位作者 Vijay D.Chavan Sang-Wha Lee 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第3期282-296,共15页
To overcome the limited electronic conductivity and capacity of single and binary transition metal phos-phates(TMPs),highly electrochemical active materials and rational structural design of ternary TMPs composite are... To overcome the limited electronic conductivity and capacity of single and binary transition metal phos-phates(TMPs),highly electrochemical active materials and rational structural design of ternary TMPs composite are urgently required.In this study,we successfully synthesized an amorphous 3D Ni-Co-Mn phosphate@2D Ti3C2Tx(MXene)nanocomposite(NCMP series)through the electrodeposition method.The amorphous Ni-Co-Mn phosphate effectively restricts the self-accumulation of MXene nanosheets,result-ing in the development of a porous nanostructure.This structure exposes more active sites,expands the ion transport path,and enhances the conductivity of the Ni-Co-Mn phosphate@Ti3C2Tx material.Owing to the synergistic effect offered by Ni-Co-Mn phosphate and MXene nanocomposite,the anchored Ni-Co-Mn phosphate@Ti3C2Tx(NCMP-5)electrode delivers an elevated capacity of 342 mAh/g(1230 C/g)at 5.0 A/g,surpassing the pristine Ni-Co-Mn phosphate(NCMP-4,260 mAh/g)and MXene(33.3 mAh/g).Moreover,a hybrid solid-state supercapacitor(HSSC)device is assembled with NCMP-5 as a cathode and reduced graphene oxide(rGO)as an anode within a polymer gel(PVA-KOH)electrolyte.Notably,the fabricated HSSC device displays a supreme specific capacity of 27.5 mAh/g(99 C/g)and a high(volumetric)energy density of 22 Wh/kg(3.6 Wh/cm3)at a power density of 0.80 kW/kg(0.13 kW/cm3)for 1.0 A/g.Moreover,the HSSC device retains 95.4%of its initial capacity even after 10,000 cycles.Importantly,the operational potential window of two serially connected HSSC devices approaches+3.2 V,enabling different colored commercial light-emitting diodes(LEDs)to be efficiently illuminated.Eventually,the remarkable super-capacitive characteristics of the 3D@2D amorphous Ni-Co-Mn phosphate@MXene nanocomposite make it an attractive choice for advanced electroactive materials in upcoming hybrid energy storage technologies. 展开更多
关键词 Ni-Co-Mn phosphate Ti3C2Tx Electrodeposition Nanocomposite Amorphous nature Hybrid solid-state supercapacitor
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Hollow engineering and component optimization strategy to construct flower-like yolk-shell structure SiO2@Void@C@WS2 multicomponent nanocomposites for microwave absorption 认领 引用 被引量：2
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作者 Yaoyi Li Xiaosi Qi +8 位作者 Beibei Zhan Junfei Ding Yunpeng Qu Xiu Gong Jing-Liang Yang Yanli Chen Qiong Peng Wei Zhong Kai Sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第9期96-104,共9页
Hollow engineering plays a crucial role in enhancing interfacial polarization,which is an essential factor in microwave absorption.Herein,an in-situ growth approach was adopted to successively coating C layer and WS_(... Hollow engineering plays a crucial role in enhancing interfacial polarization,which is an essential factor in microwave absorption.Herein,an in-situ growth approach was adopted to successively coating C layer and WS2 nanosheets on the surface SiO2 nanosphere.The obtained results suggested that the formed SiO2@Void@C@WS2 multi-component nanocomposites(MCNCs)reveal a representative flower-like yolk-shell structure,which were manufactured massively through a simple channel.Additionally,the obtained SiO2@Void@C@WS2 MCNCs presented a more and more obvious yolk-shell structure and reduced WS2 content with decreasing the addition of SiO2@C or tungsten and sulfur sources.Because of their distinc-tive structures and remarkable cooperative effects,the SiO2@Void@C@WS2 displayed excellent microwave absorption performances.Through the majorization of hollow structure and WS2,improved properties of SiO2@Void@C@WS2 MCNCs could be acquired owing to their boosted polarization and conductive loss capabilities.Amongst,the resulting SiO2@Void@C@WS2 MCNCs exhibited the effective absorption band and minimum reflection loss values of 5.40 GHz and−45.50 dB with matching thicknesses of 1.78 and 1.55 mm,respectively.Therefore,our findings employed hollow engineering and optimization strategies for components to design and fabricate the yolk-shell structure flower-like MCNCs,which acted as highly efficient wide-band microwave absorbing materials. 展开更多
关键词 Hollow engineering SiO2@Void@C@WS2 Multicomponent Nanocomposites Polarization loss Conductive loss
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Ag-enhanced oxygen vacancies in CeO2-ZnO nanocomposites for photo-assisted room temperature ppb-level CH3SH detection 认领 引用
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作者 Wenlong Li Mengjiao Wu +6 位作者 Han Li Chengpu Lv Yuangui Lin Qiuping Zhang Huan Yuan Chengjun Dong Ming Xu 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第12期2732-2741,I0005,共10页
The effective detection of trace methyl mercaptan(CH3SH)with low power consumption is crucial for assessing air quality and facilitating non-invasive diagnosis of diseases such as periodontitis.Herein,we synthesize... The effective detection of trace methyl mercaptan(CH3SH)with low power consumption is crucial for assessing air quality and facilitating non-invasive diagnosis of diseases such as periodontitis.Herein,we synthesized a ternary CeO2-ZnO-Ag nanocomposite by a simple sol-gel one-step method,which shows the capability of monitoring ppb-level CH3SH under room temperature.The incorporation of Ag significantly reduces the particle size and increases the ratio of Ce3+as well as oxygen vacancy.Furthermore,Ag nanoparticles improve light utilization efficiency in CeO2-ZnO composites in favor of the separation of photo-generated charge carriers.The sensor based on the nanocomposites with 2 mol%Ag exhibits an exceptional response of 1.21 towards 50 ppb CH3SH at room temperature under photoassisted excitation(395 nm).Moreover,it shows a stable detection even in an environment with 57.6% humidity and high selectivity towards CH3SH gas.The gas sensing mechanism study indicates that the enhancement in perfo rmance is prima rily attributed to an increased number of oxygen vacancies and the spillover effect of Ag,ultimately leading to an augmented reaction rate of CH3SH on the surface of the sensing material.This work demonstrates that the optimized CeO2-ZnO-Ag nanocomposites hold great promise for highly selective and sensitive detection of trace CH3SH gas under specific humidity conditions. 展开更多
关键词 Gas sensor CH3SH CeO2-ZnO-Ag Nanocomposites Photo-assisted Rare earths
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BiOCl-Bi12O17Cl2 nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical 认领 引用 被引量：16
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作者 Zeqing Long Guang Xian +2 位作者 Guangming Zhang Tao Zhang Xuemei Li 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第3期464-473,共10页
A BiOCl-Bi12O17Cl2 nanocomposite with a high visible-light response and a low photoinduced electron-hole pair recombination rate was successfully synthesized using an ultrasonic-hydrothermal method.The texture,structu... A BiOCl-Bi12O17Cl2 nanocomposite with a high visible-light response and a low photoinduced electron-hole pair recombination rate was successfully synthesized using an ultrasonic-hydrothermal method.The texture,structure,optical,and photocatalytic properties of the composite were characterized.The results showed that the composite had a sheet flower-like structure with a large specific surface area.Ultraviolet-visible diffuse reflection spectra and photoluminescence spectra showed that the composite had an excellent visible-light response and a low recombination rate of photoinduced electron hole pairs.The photocatalytic property of the composite was evaluated by the removal efficiency of rhodamine B and ciprofloxacin under visible-light illumination.The composite’s reaction rate constant of removing rhodamine B(/ciprofloxacin)was approximately 8.14(/4.94),42.63(/11.91)and 64.66(/36.07)times that of Bi12O17Cl2,P25,and BiOCl,respectively.Furthermore,the composite showed a wide applicable pH range and excellent reusability.Mechanism analysis showed that photogenerated holes played a dominant role and·O2–also contributed to photocatalytic degradation.In summary,this study presents a high-efficiency photocatalyst for wastewater treatment. 展开更多
关键词 BiOCl-Bi12O17Cl2 Nanocomposite Green technology Visible-light photocatalysis
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Surface functionalized N-C-TiO2/C nanocomposites derived from metal-organic framework in water vapour for enhanced photocatalytic H generation 认领 引用 被引量：10
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作者 Mian Zahid Hussain Zhuxian Yang +7 位作者 Bart van der Linden Zheng Huang Quanli Jia Erik Cerrato Roland A.Fischer Freek Kapteijn Yanqiu Zhu Yongde Xia 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第6期485-495,I0012,共11页
Surface-functionalized nitrogen/carbon co-doped polymorphic TiO2 phase junction nanoparticles uniformly distributed in porous carbon matrix were synthesized by a simple one-step pyrolysis of titanium based metal-or... Surface-functionalized nitrogen/carbon co-doped polymorphic TiO2 phase junction nanoparticles uniformly distributed in porous carbon matrix were synthesized by a simple one-step pyrolysis of titanium based metal-organic framework(MOF),NH2-MIL-125(Ti) at 700℃ under water vapour atmosphere.Introducing water vapour during the pyrolysis of NH2-MIL-125(Ti) not only functionalizes the derived porous carbon matrix with carboxyl groups but also forms additional oxygen-rich N like interstitial/intraband states lying above the valence band of TiO2 along with the self-doped carbo n,which further narrows the energy band gaps of polymorphic TiO2 nanoparticles that enhance photocatalytic charge transfer efficiency.Without co-catalyst,sample N-C-TiO2/CArW demonstrates H2 evolution activity of 426 μmol gcat-1h-1,which remarkably outperforms commercial TiO2(P-25) and N-C-TiO2/CAr with a 5-fold and 3-fold H2 generation,respectively.This study clearly shows that water vapour atmosphere during the pyrolysis increases the hydrophilicity of the Ti-MOF derived composites by functionalizing porous carbon matrix with carboxylic groups,as well as enhancing the electrical conductivity and charge transfer efficiency due to the formation of additional localized oxygen-rich N like interstitial/intraband states.This work also demonstrates that by optimizing the anatase-rutile phase composition of the TiO2 polymorphs,tuning the energy band gaps by N/C co-doping and functionalizing the porous carbon matrix in the N-C-TiO2/C nanocomposites,the photocatalytic H2 generation activity can be further enhanced. 展开更多
关键词 Metal-organic framework TiO2 Porous carbon Nanocomposite Photocatalysis Hydrogen generation
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Metal-organic framework derived multi-functionalized and co-doped TiO2/C nanocomposites for excellent visible-light photocatalysis 认领 引用 被引量：6
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作者 Mian Zahid Hussain Zhuxian Yang +6 位作者 Ahmed M.E.Khalil Shahzad Hussain Saif Ullah Awan Quanli Jia Roland A.Fischer Yanqiu Zhu Yongde Xia 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第6期49-59,共11页
Multi-functionalized and co-doped TiO2/C nanocomposites were derived from the pyrolysis of Ti-MOFs at 800℃under different gaseous atmospheres and their photocatalytic performance were investigated.The gaseous atmo... Multi-functionalized and co-doped TiO2/C nanocomposites were derived from the pyrolysis of Ti-MOFs at 800℃under different gaseous atmospheres and their photocatalytic performance were investigated.The gaseous atmosphere during pyrolysis plays a critical role in determining the structural,textural,optical and physicochemical properties of the derived TiO2/C composites due to the synergistic effect of nitrogen-containing species,carboxylate and sulfur functionalized porous carbon as well as N/S co-doped TiO2nanoparticles.All the Ti-MOFs derived TiO2/C composites exclusively possess homogeneously distributed TiO2nanoparticles in a functionalized disc-like porous carbon matrix and demonstrate much enhanced adsorption and photodegradation performance than commercial TiO2under the same conditions.The adsorption of methylene blue(MB)in dark on these TiO2/C composites are dominated with pseudo second-order kinetic model and the high adsorption capacity of MB in dark on composite TiO2/C derived from MIL-125(Ti)in argon is due to its high surface area with predominant mesoporous carbon matrix in the composite.The composite N-O-TiO2/C derived from NH2-MIL-125(Ti)in water vapor exhibited the highest photodegradation activity with 99.7%MB removal in 3 h under visible light due to the optimal anataseutile phasejunction,together with the formation of photoactive oxygen-rich N-O like interstitial/intraband states above the valence band of TiO2,as well as the presence of N-containing species and-OH/-COOH multi-functional groups with superhydrophilic nature of the composite.This simple one-step and easily modifiable approach can be further employed to modulate homogeneously dispersed multi-functionalized and co-doped metal oxide/carbon nanocomposites for various environment and energy-related applications. 展开更多
关键词 Nanocomposite MOF derivative TiO2 Porous carbon Photocatalysis
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Study on Preparation and Properties of La_2O3/MC Nylon Nanocomposites 认领 引用 被引量：12
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作者 Lin Xuan Zhang Pingmin +1 位作者 Yin Zhoulan Chen Qiyuan 《Journal of Rare Earths》 SCIE EI CAS 2005年第6期680-684,共5页
A series of La2O3/MC nylon nanocomposites were prepared via in situ polymerization.The effects of content of nano-La2O3 on the mechanical properties of nanocomposites were studied.Dispersion of nano-La2O3 in MC nylon ... A series of La2O3/MC nylon nanocomposites were prepared via in situ polymerization.The effects of content of nano-La2O3 on the mechanical properties of nanocomposites were studied.Dispersion of nano-La2O3 in MC nylon matrix was observed with SEM.The crystal structure of nanocomposites was characterized by means of XRD.SEM analysis shows that La2O3 nanoparticles are uniformly dispersed in MC nylon matrix and little clustering exists when the content of nano-La2O3 is lower than 1%,however,when the content of nano-La2O3 is more than 1%,it begins to cluster.XRD analysis indicats that nano-La2O3 does not change the crystal structure of MC nylon.Mechanical properties tests show that the tensile strength,elongation at break,impact strength,flexural strength,and flexural modulus of nanocomposites first increase then decrease as the content of nano-La2O3 is increased.When the content of nano-La2O3 is 0.5%,the tensile strength and elongation at break of nanocomposites reach maximum,which are 17.9%and 52.1%higher respectively than those of MC nylon.When the content of nano-La2O3 is 1.0%,the impact strength,flexural strength and flexural modulus of nanocomposites reach maximum,which are 36.6%,12.7%and 16.3%higher respectively than those of MC nylon. 展开更多
关键词 MC nylon nano-La2O3 nanocomposites in situ polymerization mechanical properties rare earths
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Emerging WS2/WSe2@graphene nanocomposites: synthesis and electrochemical energy storage applications 认领 引用 被引量：14
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作者 Yu-Meng Gao Yong Liu +8 位作者 Kai-Jia Feng Jun-Qing Ma Ying-Jie Miao Bin-Rui Xu Kun-Ming Pan Osaka Akiyoshi Guang-Xin Wang Ke-Ke Zhang Qiao-Bao Zhang 《Rare Metals》 SCIE EI CAS CSCD 2024年第1期1-19,共19页
In recent years, tungsten disulfide(WS2) and tungsten selenide(WSe2) have emerged as favorable electrode materials because of their high theoretical capacity, large interlayer spacing, and high chemical activity... In recent years, tungsten disulfide(WS2) and tungsten selenide(WSe2) have emerged as favorable electrode materials because of their high theoretical capacity, large interlayer spacing, and high chemical activity;nevertheless, they have relatively low electronic conductivity and undergo large volume expansion during cycling, which greatly hinder them in practical applications. These drawbacks are addressed by combining a superior type of carbon material, graphene, with WS2 and WSe2 to form a WS2/WSe2@graphene nanocomposites.These materials have received considerable attention in electro-chemical energy storage applications such as lithium-ion batteries(LIBs), sodium-ion batteries(SIBs),and supercapacitors. Considering the rapidly growing research enthusiasm on this topic over the past several years, here the recent progress of WS2/WSe2@graphene nanocomposites in electrochemical energy storage applications is summarized. Furthermore, various methods for the synthesis of WS2/WSe2@graphene nanocomposites are reported and the relationships among these methods, nano/microstructures, and electrochemical performance are systematically summarized and discussed. In addition, the challenges and prospects for the future study and application of WS2/WSe2@graphene nanocomposites in electrochemical energy storage applications are proposed. 展开更多
关键词 WS2/WSe2@graphene nanocomposites Liion batteries(LIBs) Na-ion batteries(SIBs) Supercapacitors Electrochemical performance
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EFFECT OF POLYANILINE AS A SURFACE MODIFIER OF TiO_2 NANO-PARTICLES ON THE PROPERTIES OF POLYVINYL CHLORIDE/TiO_2 NANOCOMPOSITES 认领 引用 被引量：7
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作者 Ali Olad Sepideh Behboudi Ali Akbar Entezami 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2013年第3期481-494,共14页
Surface of TiO2 nanoparticles was modified with the in situ chemical oxidative polymerization of aniline. Polyaniline modified TiO2 nanoparticles （PANI-TiO2） were characterized with the FT-IR, XRD, SEM and TEM techn... Surface of TiO2 nanoparticles was modified with the in situ chemical oxidative polymerization of aniline. Polyaniline modified TiO2 nanoparticles （PANI-TiO2） were characterized with the FT-IR, XRD, SEM and TEM techniques. Results confirmed that PANI was grafted successfully on the surface of TiO2 nanoparticles, therefore agglomeration of nanoparticles decreased dramatically. Polyvinyl chloride nanocomposites filled with 1 wt%-5 wt% of PANI-TiO2 and TiO2 nanoparticles were prepared via the solution blending method. PVC nanocomposites were analyzed with FT-IR, XRD, SEM, TG/DTA, DSC and tensile test techniques. Effect of PANI as surface modifier of nanoparticles was discussed according to the final properties of PVC nanocomposites. Results demonstrated that deposition of PANI on the surface of TiO2 nanoparticles improved the interfacial adhesion between the constituents of nanocomposites, which resulted in better dispersion of nanoparticles in the PVC matrix. Also PVC/PANI-TiO2 nanocomposites showed higher thennal resistance, tensile strength and Young＇s modulus compared to those of unfilled PVC and PVC/TiO2 nanocomposites. 展开更多
关键词 Polymer nanocomposite Polyvinyl chloride Polyaniline TiO2 nano-additive Surface modification.
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High strength and high creep resistant ZrB2/Al nanocomposites fabricated by ultrasonic-chemical in-situ reaction 认领 引用 被引量：4
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作者 Xizhou Kai Shuoming Huang +7 位作者 Lin Wu Ran Tao Yanjie Peng Zemin Mao Fei Chen Guirong Li Gang Chen Yutao Zhao 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2019年第9期2107-2114,共8页
In this study, the ZrB2/Al nanocomposites were fabricated via in-situ reaction of the Al-K2ZrF6-KBF4 system, assisted with ultrasonic vibration and spiral electromagnetic stirring. Microstructure, tensile property and... In this study, the ZrB2/Al nanocomposites were fabricated via in-situ reaction of the Al-K2ZrF6-KBF4 system, assisted with ultrasonic vibration and spiral electromagnetic stirring. Microstructure, tensile property and creep behavior of the fabricated nanocomposites were further investigated. Microstructure observation showed that the ultrasonic vibration could prevent the fast growth as well as break the clusters of in-situ synthesized nanoparticles in melt, resulted in smaller size (10-50 nm) and relatively more uniform distribution of the in-situ nanoparticles located on the boundary of and/or inside the aluminum matrix grains in the final composites. The fabricated nanocomposites exhibited an enhancement in both strength and ductility, due to the elevated work hardening ability, i.e., improved dislocation propagating ability and decreased dynamic recovery of the existing dislocations induced by the in-situ nanoparticles. Meanwhile, the nanocomposites exhibited excellent creep resistance ability, which was about 2-18 times higher than those of the corresponding aluminum matrix. The stress exponent of 5 was identified for the fabricated nanocomposites, which suggested that their creep behavior was related to dislocation climb mechanism. The enhanced creep resistance of the nanocomposites was attributed to the Orowan strengthening and grain boundary strengthening induced by the ZrB2 nanoparticles. Thus, the ultrasonicchemical in-situ reaction promises a low cost but effective way to fabricate aluminum nanocomposites with high strength and high creep resistance. 展开更多
关键词 In-situ ZrB2/Al nanocomposites Microstructure High strength High creep behavior Mechanism
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Microstructure optimization of core@shell structured MSe2/FeSe2@MoSe2(M=Co,Ni)flower-like multicomponent nanocomposites towards high-efficiency microwave absorption 认领 引用 被引量：13
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作者 Jingjing Zhang Xiaosi Qi +4 位作者 Xiu Gong Qiong Peng Yanli Chen Ren Xie Wei Zhong 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第33期59-70,共12页
In this work,we put forward a scheme to exquisitely design and selectively synthesize the core@shell structured MSe2/FeSe2@MoSe2(M=Co,Ni)flower-like multicomponent nanocomposites(MCNCs)through a simple two-st... In this work,we put forward a scheme to exquisitely design and selectively synthesize the core@shell structured MSe2/FeSe2@MoSe2(M=Co,Ni)flower-like multicomponent nanocomposites(MCNCs)through a simple two-step hydrothermal reaction on the surfaces of MFe2O_4 nanospheres with the certain amounts of Mo and Se sources.With increasing the amounts of Mo and Se sources,the obtained core@shell structured MSe2/FeSe2@MoSe2(M=Co,Ni)MCNCs with the enhanced content of MoSe2and improved flower-like geometry morphology could be produced on a large scale.The obtained results revealed that the as-prepared samples displayed improved comprehensive microwave absorption properties(CMAPs)with the increased amounts of Mo and Se sources.The as-prepared CoSe2/FeSe2@MoSe2and NiSe2/FeSe2@MoSe2MCNCs with the well-defined flower-like morphology could simultaneously present the outstanding CMAPs in terms of strong absorption capability,wide absorption bandwidth,and thin matching thicknesses,which mainly originated from the conduction loss and flower-like geometry morphology.Therefore,the findings not only develop the very desirable candidates for high-performance microwave absorption materials but also pave a new way for optimizing the CMAPs through tailoring morphology engineering. 展开更多
关键词 Core@shell structure MSe2/FeSe2@MoSe2(M=Co.Ni) multicomponent nanocomposites Flower-like geometry morphology Broad frequency bandwidth Microwave absorption
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The design and fabrication of Co3O4/Co3V2O8/Ni nanocomposites as high-performance anodes for Li-ion batteries 认领 引用 被引量：6
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作者 Yang Li Lingbin Kong +2 位作者 Maocheng Liu Weibin Zhang Long Kang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2017年第3期494-500,共7页
The CoO/CoVO/Ni nanocomposites were rationally designed and prepared by a two-step hydrothermal synthesis and subsequent annealing treatment. The one-dimensional（1D） CoOnanowire arrays directly grew on Ni foam, wher... The CoO/CoVO/Ni nanocomposites were rationally designed and prepared by a two-step hydrothermal synthesis and subsequent annealing treatment. The one-dimensional（1D） CoOnanowire arrays directly grew on Ni foam, whereas the 1D CoVOnanowires adhered to parts of CoOnanowires.Most of the hybrid nanowires were inlayed with each other, forming a 3D hybrid nanowires network.As a result, the discharge capacity of CoO/CoVO/Ni nanocomposites could reach 1201.8 mAh/g after100 cycles at 100 mA/g. After 600 cycles at 1 A/g, the discharge capacity was maintained at 828.1 mAh/g.Moreover, even though the charge/discharge rates were increased to 10 A/g, it rendered reversible capacity of 491.2 mAh/g. The superior electrochemical properties of nanocomposites were probably ascribed to their unique 3D architecture and the synergistic effects of two active materials. Therefore, such CoO/CoVO/Ni nanocomposites could potentially be used as anode materials for high-performance Li-ion batteries. 展开更多
关键词 Co3O4 Co3V2O8 Ni foam Nanocomposites Li-ion batteries
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Synthesis of TiO_2/g-C_3N_4 nanocomposites with phosphate–oxygen functional bridges for improved photocatalytic activity 认领 引用 被引量：9
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作者 Chong Liu Fazal Raziq +3 位作者 Zhijun Li Yang Qu Amir Zada Liqiang Jing 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2017年第6期1072-1078,共7页
One of the most general methods to enhance the separation of photogenerated carriers for g‐C3N4is to construct a suitable heterojunctional composite,according to the principle of matching energy levels.The interface ... One of the most general methods to enhance the separation of photogenerated carriers for g‐C3N4is to construct a suitable heterojunctional composite,according to the principle of matching energy levels.The interface contact in the fabricated nanocomposite greatly influences the charge transfer and separation so as to determine the final photocatalytic activities.However,the role of interface contact is often neglected,and is rarely reported to date.Hence,it is possible to further enhance the photocatalytic activity of g‐C3N4‐based nanocomposite by improving the interfacial connection.Herein,phosphate-oxygen(P-O)bridged TiO2/g‐C3N4nanocomposites were successfully synthesized using a simple wet chemical method,and the effects of the P-O functional bridges on the photogenerated charge separation and photocatalytic activity for pollutant degradation and CO2reduction were investigated.The photocatalytic activity of g‐C3N4was greatly improved upon coupling with an appropriate amount of nanocrystalline TiO2,especially with P-O bridged TiO2.Atmosphere‐controlled steady‐state surface photovoltage spectroscopy and photoluminescence spectroscopy analyses revealed clearly the enhancement of photogenerated charge separation of g‐C3N4upon coupling with the P-O bridged TiO2,resulting from the built P-O bridges between TiO2and g‐C3N4so as to promote effective transfer of excited electrons from g‐C3N4to TiO2.This enhancement was responsible for the improved photoactivity of the P-O bridged TiO2/g‐C3N4nanocomposite,which exhibited three‐time photocatalytic activity enhancement for2,4‐dichlorophenol degradation and CO2reduction compared with bare g‐C3N4.Furthermore,radical‐trapping experiments revealed that the·OH species formed as hole‐modulated direct intermediates dominated the photocatalytic degradation of2,4‐dichlorophenol.This work provides a feasible strategy for the design and synthesis of high‐performance g‐C3N4‐based nanocomposite photocatalysts for pollutant degradation and CO2reduction. 展开更多
关键词 TiO2/graphitic carbon nitride nanocomposite Phosphate–oxygen bridge Charge transfer and separation Photocatalysis Carbon dioxide conversion
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Preparation and Photocatalytic Activity of BiOBr/TiO_2 Heterojunction Nanocomposites 认领 引用 被引量：5
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作者 谭欣 李香利 +1 位作者 于涛 赵阳 《Transactions of Tianjin University》 EI CAS 2016年第3期211-217,共7页
An efficient visible-light-responsive BiOBr/TiO2 heterojunction nanocomposite was fabricated successfully using in-situ depositing technique at room temperature by introducing BiOBr onto the surface of TiO2 nano- belt... An efficient visible-light-responsive BiOBr/TiO2 heterojunction nanocomposite was fabricated successfully using in-situ depositing technique at room temperature by introducing BiOBr onto the surface of TiO2 nano- belts pre-prepared by hydrothermal reaction and etched with H2SO4. The obtained particles were characterized by XRD, SEM, TEM, XPS, UV-Vis DRS and PL techniques. BiOBr/TiO2 heterojunction nanocomposites with different mass ratios of m （BiOBr）/m （TiO2） were discussed in order to get the best photocatalytie activity, and BiOBr/TiO2-1.0 was proved to be the optimal mass ratio. BiOBr/TiO2-1.0 exhibited excellent photocatalytic activity in the degradation of RhB compared with TiO2 nanobelts, pure BiOBr and the mechanical mixture of TiO2 nanobelts and BiOBr. At last, a possible mechanism ofphotocatalytic enhancement was proposed. 展开更多
关键词 photocatalysis BiOBr TiO2 nanobelt heterojunction nanocomposite visible light
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Preparation and shape memory properties of TiO_2/PLCL biodegradable polymer nanocomposites 认领 引用 被引量：5
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作者 鲁玺丽 吕秀乾 +2 位作者 王建永 孙志洁 佟运祥 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第1期120-127,共8页
The preparation of TiO2/poly（L-lactide-co-ε-caprolactone）（PLCL） nanocomposites and their properties were reported.TiO2nanoparticles were surface modified by ring-opening polymerization of ε-caprolactone（ε-CL）... The preparation of TiO2/poly（L-lactide-co-ε-caprolactone）（PLCL） nanocomposites and their properties were reported.TiO2nanoparticles were surface modified by ring-opening polymerization of ε-caprolactone（ε-CL）.The resulting poly（ε-caprolactone）-grafted TiO2（g-TiO2） was characterized by Fourier transform infrared spectroscopy（FTIR）,thermogravimetric analysis（TGA） and transmission electron microscopy（TEM）.The g-TiO2can be uniformly dispersed in chloroform and the g-TiO2/PLCL nanocomposites were successfully fabricated through solvent-casting method.The effects of the content of g-TiO2nanoparticles on tensile properties and shape memory properties were investigated.A significant improvement in the tensile properties of the 5% g-TiO2/PLCL mass fraction nanocomposite is obtained：an increase of 113% in the tensile strength and an increase of 11% in the elongation at break over pure PLCL polymer.The g-TiO2/PLCL nanocomposites with a certain amount of g-TiO2content have better shape memory properties than pure PLCL polymer.The g-TiO2nanoparticles play an additional physical crosslinks which are contributed to improvement of the shape memory properties. 展开更多
关键词 poly（L-lactide-co-ε-caprolactone） nanocomposites TiO2nanoparticles surface grafting shape memory properties mechanical properties
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Enhanced photoresponse performance in Ga/Ga_2O_3 nanocomposite solar-blind ultraviolet photodetectors 认领 引用 被引量：4
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作者 Shu-Juan Cui Zeng-Xia Mei +5 位作者 Yao-Nan Hou Quan-Sheng Chen Hui-Li Liang Yong-Hui Zhang Wen-Xing Huo Xiao-Long Du 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第6期400-405,共6页
In the present work, we explore the solar-blind ultraviolet（UV） photodetectors（PDs） with enhanced photoresponse,fabricated on Ga/Ga2O3 nanocomposite films. Through pre-burying metal Ga layers and thermally post-an... In the present work, we explore the solar-blind ultraviolet（UV） photodetectors（PDs） with enhanced photoresponse,fabricated on Ga/Ga2O3 nanocomposite films. Through pre-burying metal Ga layers and thermally post-annealing the laminated Ga2 O3/Ga/Ga2O3 structures, Ga/Ga2O3 nanocomposite films incorporated with Ga nanospheres are obtained. For the prototype PD, it is found that the photocurrent and photoresponsivity will first increase and then decrease monotonically with the thickness of the pre-buried Ga layer increasing. Each of all PDs shows a spectrum response peak at 260 nm, demonstrating the ability to detect solar-blind UV light. Adjustable photoresponse enhancement factors are achieved by means of the surface plasmon in the nanocomposite films. The PD with a 20 nm thick Ga interlayer exhibits the best solar-blind UV photoresponse characteristics with an extremely low dark current of 8.52 p A at 10-V bias, a very high light-to-dark ratio of ～ 8 × 10~5, a large photoresponsivity of 2.85 A/W at 15-V bias, and a maximum enhancement factor of ～ 220. Our research provides a simple and practical route to high performance solar-blind UV PDs and potential applications in the field of optoelectronics. 展开更多
关键词 Ga/Ga2O3 nanocomposite surface plasmon solar-blind photodetector
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