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Self-assembled nanoflower zeolitic imidazolate framework-carbon for superior sodium storage 认领 引用 被引量：1
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作者 Xiaohua Zhang Kangjie Han +4 位作者 Xinxin Zhao Xiaoyan Yan Kang Zhang Hengxiang Li Baosheng Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第5期1618-1627,I0149-I0151,共10页
Conventional hard carbon anodes,despite their high sodium storage capacity,suffer from two major limitations:sluggish ion diffusion kinetics due to tortuous micropore networks and significant volume expansion arising ... Conventional hard carbon anodes,despite their high sodium storage capacity,suffer from two major limitations:sluggish ion diffusion kinetics due to tortuous micropore networks and significant volume expansion arising from disordered carbon structures.These inherent defects collectively compromise rate capability and cycling stability.Herein,we devise a graphene oxide(GO)-directed templating approach to architect zeolitic imidazolate framework(ZIF)-derived carbon into a hierarchical nanoflower superstructure with radially aligned meso/macroporous nanosheets.This superstructure integrates three synergistic features:three-dimensional interconnected channels and graphitic domains enabling fast ion/electron transport,radially aligned nanosheets maximizing electrode-electrolyte contact while accommodating volume expansion,and nitrogen-doped defect sites providing preferential redox-active centers for sodium storage.The optimized ZIF-9@GO-6 achieves a high specific capacity of 521.8 mAh·g-1at 0.05 A·g-1with an initial Coulombic efficiency of 89.2%,and retains a specific capacity of 298.2 mAh·g-1after 500 cycles.This GO-directed morphological engineering strategy effectively resolves the intrinsic trade-offs between porosity,conductivity,and structural stability in conventional hard carbon anodes,paving the way for scalable,high-performance sodium-ion batteries. 展开更多
关键词 sodium-ion batteries graphitization hard carbon zeolitic imidazolate framework graphene oxide
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Bimetallic zeolitic imidazolate framework derived hollow layered double hydroxide with tailorable interlayer spacing for nickel-zinc batteries 认领 引用 被引量：2
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作者 Hui Yang Guangxun Zhang +2 位作者 Yueyao Sun Huijie Zhou Huan Pang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第6期733-738,共6页
Rationally design the morphology and structure of electroactive nanomaterials is an effective approach to enhance the performance of aqueous batteries.Herein,we co-engineered the hollow architecture and interlayer spa... Rationally design the morphology and structure of electroactive nanomaterials is an effective approach to enhance the performance of aqueous batteries.Herein,we co-engineered the hollow architecture and interlayer spacing of layered double hydroxides(LDH)to achieve high electrochemical activity.The hierarchical hollow LDH was prepared from bimetallic zeolitic imidazolate frameworks(ZIF)by a facile cation exchange strategy.Zn and Cu elements were selected as the second metals incorporated in Co-ZIF.The characteristics of the corresponding derivatives were studied.Besides,the transformation mechanism of CoZn-ZIF into nanosheet-assembled hollow Co Zn Ni LDH(denoted as CoZnNi-OH)was systematically investigated.Importantly,the interlayer spacing of CoZnNi-OH expands due to Zn2+incorporation.The prepared CoZnNi-OH offers large surface area,exposed active sites,and rapid mass transfer/diffusion rate,which lead to a significant enhancement in the specific capacitance,rate performance,and cycle stability of CoZnNi-OH electrode.In addition,the aqueous alkaline CoZnNi-OH//Zn showed a maximum energy density/power density of 0.924 m Wh/cm2,8.479 m W/cm2.This work not only raises an insightful strategy for regulating the morphology and interlayer spacing of LDH,but also provides a reference of designing hollow nickel-based nanomaterials for aqueous batteries. 展开更多
关键词 Nickel-zinc battery Hollow Interlayer spacing Layered double hydroxide Zeolitic imidazolate framework
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Recent advances in zeolitic imidazolate frameworks as drug delivery systems for cancer therapy 认领 引用 被引量：2
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作者 Yuhan Wang Yixin Tang +4 位作者 Lei Guo Xi Yang Shanli Wu Ying Yue Caina Xu 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS CSCD 2025年第1期94-118,共25页
Biological nanotechnologies based on functional nanoplatforms have synergistically catalyzed the emergence of cancer therapies.As a subtype of metal-organic frameworks(MOFs),zeolitic imidazolate frameworks(ZIFs)have e... Biological nanotechnologies based on functional nanoplatforms have synergistically catalyzed the emergence of cancer therapies.As a subtype of metal-organic frameworks(MOFs),zeolitic imidazolate frameworks(ZIFs)have exploded in popularity in the field of biomaterials as excellent protective materials with the advantages of conformational flexibility,thermal and chemical stability,and functional controllability.With these superior properties,the applications of ZIF-based materials in combination with various therapies for cancer treatment have grown rapidly in recent years,showing remarkable achievements and great potential.This review elucidates the recent advancements in the use of ZIFs as drug delivery agents for cancer therapy.The structures,synthesis methods,properties,and various modifiers of ZIFs used in oncotherapy are presented.Recent advances in the application of ZIF-based nanoparticles as single or combination tumor treatments are reviewed.Furthermore,the future prospects,potential limitations,and challenges of the application of ZIF-based nanomaterials in cancer treatment are discussed.We except to fully explore the potential of ZIF-based materials to present a clear outline for their application as an effective cancer treatment to help them achieve early clinical application. 展开更多
关键词 Metal-organic frameworks(MOFs) Zeolitic imidazolate frameworks(ZIF-8) ZIF-based nanoparticles Drug delivery Cancer treatment
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Molybdenum-glycerate@zeolitic imidazolate framework spheres derived hierarchical nitrogen-doped carbon-encapsulated bimetallic selenides heterostructures for improved lithium-ion storage 认领 引用
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作者 Ming Zhong Xue Guo +4 位作者 Yang Liu Kun Zhao Hui Peng Suijun Liu Xiaobo Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第5期728-732,共5页
In this work,the synthesis of uniform zeolitic imidazolate framework-coated Mo-glycerate spheres and their subsequent conversion into hierarchical architecture containing bimetallic selenides heterostructures and nitr... In this work,the synthesis of uniform zeolitic imidazolate framework-coated Mo-glycerate spheres and their subsequent conversion into hierarchical architecture containing bimetallic selenides heterostructures and nitrogen-doped carbon shell are reported.Selenization temperature plays a significant role in determining the phases,morphology,and lithium-ion storage performance of the composite.Notably,the optimal electrode demonstrates an ultrahigh reversible capacity of 1298.2 mAh/g after 100 cycles at 0.2 A/g and an outstanding rate capability with the capacity still maintained 505.7 mAh/g after 300 cycles at 1.0 A/g,surpassing the calculated theoretical capacity according to individual component and most of the reported MoSe@C-or ZnSe@C-based anodes.Furthermore,ex-situ X-ray diffraction patterns reveal the combined conversion and alloying reaction mechanisms of the composite. 展开更多
关键词 Zeolitic imidazolate framework Heterostructure Core-shell structure Electrode material Lithium-ion battery
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pH-responsive biomimetic zeolitic imidazolate framework-based nanoparticles for co-delivery of cetuximab and siRNA in synergistic therapy of laryngeal squamous cell carcinoma 认领 引用
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作者 Liyin Wang Milad Ashrafizadeh +1 位作者 Gautam Sethi Xinjia Zhou 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2025年第7期1606-1618,共13页
Suboptimal treatment of laryngeal squamous cell carcinoma(LSCC)provides poor survival rate.The poor bioavailability,resistance to cetuximab(Cet),and the instability of small interfering RNA(siRNA)limit their efficacy ... Suboptimal treatment of laryngeal squamous cell carcinoma(LSCC)provides poor survival rate.The poor bioavailability,resistance to cetuximab(Cet),and the instability of small interfering RNA(siRNA)limit their efficacy in LSCC therapy.The present study has been aimed to develop a Cet and focal adhesion kinase(FAK)siRNA(siFAK)co-delivery nanosystem.Zeolitic imidazolate framework-8(ZIF-8),with its large specific surface area and pH-responsive properties,is an ideal delivery carrier allowing controlled drug release in the acidic tumor microenvironment.Therefore,Cet was loaded onto ZIF-8 and encapsulated in a TU177 cell membrane(TCM)after the electrostatic adsorption of siFAK.Fourier transform infrared(FTIR)spectroscopy,transmission electron microscopy(TEM),scanning electron microscopy(SEM),zeta potential,X-ray diffraction,and particle size analyses were deployed to characterize Cet/siFAK@ZIF-8@TCM.TU177 cells and subcutaneously transplanted tumor-bearing nude mice were used to evaluate the intracellular uptake,cytotoxicity,in vivo biocompatibility,biodistribution,biosafety,pH responsiveness,and anti-LSCC efficacy of Cet/siFAK@ZIF-8@TCM.After ZIF-8@TCM were loaded with Cet and siFAK,alterations in their physical and crystal structures,particle size,and zeta potential were observed.Meanwhile,the co-delivery system increased the loading of Cet through the electrostatic adsorption of siFAK to Cet-loaded ZIF-8.The intracellular uptake of Cet/siFAK@ZIF-8@TCM also protected siFAK from degradation,effectively decreasing the messenger RNA(mRNA)and protein expression levels of FAK in LSCC cells.The ZIF-8@TCM nanosystem for co-delivery of Cet and siFAK exhibited pH-responsiveness and tumor-targeting capabilities,thereby exerting anti-LSCC effects.Co-delivery of Cet and siFAK via the pH-responsive ZIF-8@TCM system enabled the targeted release of the chemotherapeutic and gene,in turn maximizing their anti-LSCC effect while ensuring biosafety. 展开更多
关键词 Biomimetic nano co-delivery system Zeolitic imidazolate framework-8 Cetuximab siFAK Laryngeal squamous cell carcinoma
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A Zeolite Imidazolate Framework ZIF-8 Catalyst for Friedel-Crafts Acylation 认领 引用 被引量：20
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作者 Lien T.L.NGUYEN Ky K.A.LE Nam T.S.PHAN 《催化学报》 2012年第4期688-696,共9页
A zeolite imidazolate framework,ZIF-8,was synthesized and characterized by dynamic laser light scattering,X-ray powder diffraction,scanning electron microscopy,transmission electron microscopy,thermogravimetric analys... A zeolite imidazolate framework,ZIF-8,was synthesized and characterized by dynamic laser light scattering,X-ray powder diffraction,scanning electron microscopy,transmission electron microscopy,thermogravimetric analysis,Fourier transform infrared,atomic absorption spectrophotometry,and nitrogen adsorption measurements.The ZIF-8 was highly crystalline and porous with a surface area of over 1600 m2/g.Friedel-Crafts acylation of anisole and benzoyl chloride proceeded well in the presence of ZIF-8(2-6 mol%)without the need for an inert atmosphere.The reaction afforded a selectivity of 93%-95%to the p-isomer.The solid catalyst can be separated from the reaction mixture by simple centrifugation and reused without significant degradation in catalytic activity.There was no leaching of active acid species into the reaction solution. 展开更多
关键词 imidazolate framework zeolite imidazolate framework ZIF-8 Friedel-Crafts acylation porous material catalysis
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From Zeolitic Imidazolate Framework-8 to Metal-Organic Frameworks (MOFs): Representative Substance for the General Study of Pioneering MOF Applications 认领 引用 被引量：5
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作者 Dianting Zou Dingxin Liu Jianyong Zhang 《Energy & Environmental Materials》 SCIE EI CAS 2018年第4期209-220,共12页
Metal-organic frameworks(MOFs)have been intensely studied for the past few decades as an enormous family of highly tunable porous materials with promisingly applicable functionalities in adsorption,separation,catalysi... Metal-organic frameworks(MOFs)have been intensely studied for the past few decades as an enormous family of highly tunable porous materials with promisingly applicable functionalities in adsorption,separation,catalysis,sensing,electrochemistry,and a great number of emerging purposes.As a classic MOF,zeolitic imidazolate framework-8(ZIF-8)is conventionally one of the very few MOF members that has been commercialized with considerable production. 展开更多
关键词 metal-organic frameworks nanoporous composites zeolitic imidazolate frameworks zeolitic imidazolate framework-8
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Manganese-Zeolitic Imidazolate Frameworks-90 with High Blood Circulation Stability for MRI-Guided Tumor Therapy 认领 引用 被引量：8
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作者 Zhenqi Jiang Bo Yuan +10 位作者 Nianxiang Qiu Yinjie Wang Li Sun Zhenni Wei Yanyin Li Jianjun Zheng Yinhua Jin Yong Li Shiyu Du Juan Li Aiguo Wu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2019年第4期97-113,共17页
Zeolitic imidazolate frameworks(ZIFs)as smart drug delivery systems with microenvironment-triggered release have attracted much attention for tumor therapy.However,the exploration of ZIFs in biomedicine still encounte... Zeolitic imidazolate frameworks(ZIFs)as smart drug delivery systems with microenvironment-triggered release have attracted much attention for tumor therapy.However,the exploration of ZIFs in biomedicine still encounters many issues,such as inconvenient surface modification,fast drug release during blood circulation,undesired damage to major organs,and severe in vivo toxicity.To address the above issues,we developed an Mn-ZIF-90 nanosystem functionalized with an originally designed active-targeting and pH-responsive magnetic resonance imaging(MRI)Y1 receptor ligand[Asn28,Pro30,Trp32]-NPY(25-36)for imaging-guided tumor therapy.After Y1 receptor ligand modification,the Mn-ZIF-90 nanosystem exhibited high drug loading,better blood circulation stability,and dual breast cancer cell membrane and mitochondria targetability,further favoring specific microenvironment-triggered tumor therapy.Meanwhile,this nanosystem showed promising T1-weighted magnetic resonance imaging contrast in vivo in the tumor sites.Especially,this nanosystem with fast clean-up had almost no obvious toxicity and no damage occurred to the major organs in mice.Therefore,this nanosystem shows potential for use in imaging-guided tumor therapy. 展开更多
关键词 Zeolitic imidazolate frameworks-90 Drug delivery Magnetic resonance imaging pH-responsive release Y1 receptor ligand
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Facile fabrication of nanoscale hierarchical porous zeolitic imidazolate frameworks for enhanced toluene adsorption capacity 认领 引用 被引量：7
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作者 Min-Hui Yang Chong-Xiong Duan +6 位作者 Xin-Juan Zeng Jing-Jing Li Cui-Yin Liu Long-Jiao Zeng Yi Zhang Kai Wang Hong-Xia Xi 《Rare Metals》 SCIE EI CAS CSCD 2021年第2期471-477,共7页
The development of a simple and facile synthesis route is a highly desirable but challenging process in the fabrication of nanoscale hierarchical porous zeolitic imidazolate frameworks(ZIFs).Herein we describe a facil... The development of a simple and facile synthesis route is a highly desirable but challenging process in the fabrication of nanoscale hierarchical porous zeolitic imidazolate frameworks(ZIFs).Herein we describe a facile method for rapidly synthesizing hierarchically porous ZIF-90 nanocrystals(particle sizes of~300 nm)using hydroxyl double salts as intermediates at room temperature.The as-synthesized ZIF-90 contained hierarchical porous structures developed using a crystalline interior and a random stack of multiple nanoparticles.Both the morphology and particle size of ZIF-90 nanocrystals could be tuned by controlling the molar ratio of ICA/Zn2+.Note that the as-synthesized hierarchically porous ZIF-90 nanocrystals exhibited higher thermal stability compared with the conventional ZIF-90.Because of the introduction of hierarchical porous structures,the resultant hierarchically porous ZIF-90 nanocrystals showed enhanced toluene adsorption capacity than those of conventional metal organic frameworks and zeolites. 展开更多
关键词 Zeolitic imidazolate framework-90 Nanoscale Green and rapid synthesis Hierarchical porous structure Enhanced toluene adsorption
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In-situ emb e dding zeolitic imidazolate framework derived Co–N–C bifunctional catalysts in carbon nanotube networks for flexible Zn–air batteries 认领 引用 被引量：3
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作者 Bo Lv Sha Zeng +6 位作者 Wei Yang Jian Qiao Chao Zhang Chengfeng Zhu Minghai Chen Jiangtao Di Qingwen Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第11期170-176,共7页
Recently, the development of high-performance bifunctional oxygen catalysts integrated with flexible conductive scaffolds f or rechargeable metal-air batteries has attracted considerable interest, driving by fastgrowi... Recently, the development of high-performance bifunctional oxygen catalysts integrated with flexible conductive scaffolds f or rechargeable metal-air batteries has attracted considerable interest, driving by fastgrowing wearable electronics. Herein, we report a flexible bifunctional oxygen catalyst thin film consisting of Co–N–C bifunctional catalysts embedding in carbon nanotube(CNT) networks. The catalyst is readily prepared by pyrolysis of cobalt-based zeolitic imidazolate frameworks(ZIF-67) that are in-situ synthesized in CNT networks. Such catalyst film demonstrates very high catalytic activities for oxygen reduction(onset potential: 0.91 V, and half-wave potential: 0.87 V vs. RHE) and oxygen evolution(10 m Acm^-2 at 1.58 V) reactions, high methanol tolerance property, and long-term stability(97% current retention). Moreover, our integrated catalyst film shows very good structure flexibility and robustness. Based on the obtained film air electrodes, flexible Zn–air batteries demonstrate low charging and discharging overpotentials(0.82 V at 1 m A cm^-1) and excellent structure stability in the bending tests. These results indicate that presently reported catalyst films are potential air electrodes for flexible metal–air batteries. 展开更多
关键词 Air electrodes Carbon nanotube films Bifunctional catalysts Zn-air batteries Zeolitic imidazolate framework
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A purely green approach to low-cost mass production of zeolitic imidazolate frameworks 认领 引用 被引量：4
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作者 Hai Li Wan Chen +6 位作者 Bei Liu Mingke Yang Zixuan Huang Changyu Sun Chun Deng Dapeng Cao Guangjin Chen 《Green Energy & Environment》 SCIE EI CAS CSCD 2023年第3期775-784,共10页
Although zeolitic imidazolate frameworks(ZIFs)have bright prospects in wide fields like gas storage/separation,catalysis and medicine,etc.,their large-scale applications are bottlenecked by the absence of their low-co... Although zeolitic imidazolate frameworks(ZIFs)have bright prospects in wide fields like gas storage/separation,catalysis and medicine,etc.,their large-scale applications are bottlenecked by the absence of their low-cost commercial production technique.Here,we report an uncon ventional method suitable for environmentally friendly and low-cost mass-production of ZIFs.In this method,taking the synthesis of ZIF-8 as an example,ZnO was used instead of Zn(NO3)2 in traditional solvent synthesis methods and CO2 was introduced to dissolve ZnO in aqueous solution of 2-methylimidazole(HMeim)and form water soluble salt([ZnMeim]+[MeimCOO]-)at room temperature.Then,by removing CO2 through heating or vacuuming,Meim-ions are produced and instantaneously assemble with[ZnMeim]+s to generate ZIF-8 without any by product.Due to the absence of strong acid anions(such as NO-3 and Cl- et al.)in solution,the washing of filter cake required in the conventional approaches could be omitted and the filtrate containing only water and HMeim could be reused completely.This method is really green as no waste gas or liquid generates because CO2 and water could be recycled perfectly.It overcomes almost all bottlenecks occurred in commercial production of ZIF-8 when using traditional methods.A pilot plant was established for mass-production of ZIF-8 and hundreds kilograms of ZIF-8 was produced,which indicates that the new method is not only environmentally friendly but also low cost and commercial accessibility.It is expected that the new method would open an avenue for commercial applications of ZIFs. 展开更多
关键词 Zeolitic imidazolate frameworks Mass production Metal oxide Carbon dioxide Environmentally friendly
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Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO2 for lithium-ion batteries in half/full cells 认领 引用 被引量：3
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作者 Jian-En Zhou Yiqing Liu +6 位作者 Zhijian Peng Quanyi Ye Hua Zhong Xiaoming Lin Ronghua Zeng Yongbo Wu Jiaye Ye 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第6期229-242,I0006,共14页
As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO2(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting t... As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO2(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon cycling.Hereinafter,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi0.1Co0.9O2(LNCO)with tailorable electrochemical properties.The rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g-1at 1 C for 200 cycles in half cells,1 C=275 mA g-1)and rate capability due to the expedited ion/electron transport and the strengthen mechanical robustness.The feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g-1at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage activity.This work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application. 展开更多
关键词 Lithium-ion batteries Zeolitic imidazolate framework LiNi0.1Co0.9O2 Electrochemical properties
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Bimetallic zeolitic imidazolate framework-derived substrate-free anode with superior cyclability for high-capacity lithium-ion batteries 认领 引用 被引量：2
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作者 Bhavana Joshi Edmund Samuel +3 位作者 Yong-il Kim Govindasami Periyasami Mostafizur Rahaman Sam S.Yoon 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第8期116-126,共11页
Freestanding carbon nanofibers loaded with bimetallic hollow nanocage structures were synthesized.The nanocages inherited the rhombic dodecahedral morphology of the zeolitic imidazolate framework(ZIF)precursors,ZIF-8 ... Freestanding carbon nanofibers loaded with bimetallic hollow nanocage structures were synthesized.The nanocages inherited the rhombic dodecahedral morphology of the zeolitic imidazolate framework(ZIF)precursors,ZIF-8 and ZIF-67.As anode materials for lithium-ion batteries(LIBs),the bimetallic nanocage-loaded freestanding carbon nanofibers effectively buffered volume expansions and alleviated pulverization through their different reduction and oxidation potentials.The higher capacities of the composite anodes arose via the formation of the LixZn alloy and Li2O by Zn and Co ions,respectively,and the enhanced conductivity conferred by the carbon nanofibers.A synergistic effect of the composite components toward the strong electrochemical performance(688 m A h·g-1at 1200 m A·g-1)of the bimetallic nanocage-loaded fibers was demonstrated through the superior long-term stability of the anode(1048 m A h·g-1after 300 cycles at 100 m A·g-1),suggesting that the fabricated anode can be a promising material for use in portable LIBs. 展开更多
关键词 Carbon nanofiber Nanostructure Composite anode Zeolitic imidazolate framework
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Synergistic effects of zeolitic imidazolate frameworks(ZIFs)with different transition metals on intumescent flame-retarded polypropylene composites:A comparative study 认领 引用 被引量：3
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作者 Yufeng Quan Ruiqing Shen +4 位作者 Christian Schweizer Pradeep Parajuli Zhuoran Zhang Waruna Kulatilaka Qingsheng Wang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第24期102-110,共9页
The use of intumescent flame retardants(IFRs)is considered an environmentally friendly and cost-effective strategy to suppress potential fire hazards from synthetic polymers.However,some conventional IFRs are neither ... The use of intumescent flame retardants(IFRs)is considered an environmentally friendly and cost-effective strategy to suppress potential fire hazards from synthetic polymers.However,some conventional IFRs are neither efficient in developing a thermally stable char layer nor reducing the release of toxic byproducts during polymer combustion.In this work,we aim to discuss the effects of zeolitic imidazolate frameworks(ZIFs)on synergistically improving the flame retardancy behaviors in polypropylene(PP)composites,including thermal degradation(evolved gas analysis),free radical reactions in the gaseous phase(in-situ chemiluminescent image analysis),and carbonaceous structure in the condensed phase(micro-morphology and composition analysis).It is found that the transition metals in ZIFs can catalytically accelerate the crosslinking reaction at a lower initial temperature and decrease the amount of hydrocarbon volatiles in the gaseous phase.Once ignited,the embedded ZIFs can firstly bridge adjacent phosphorus chains in the polymer matrix to expand crosslinking degrees and then they are anchored in the developed N-doped phospho-carbonaceous networks after pyrolysis.As a result,more compact char residue structures are observed in the condensed phase for ZIF-reinforced composites.For example,by replacing 2 wt%of IFR with ZIF-67,the peak heat release rate,peak smoke production rate,and peak CO production rate are reduced by 69%,80%,and 72%,respectively,when compared to the conventional composite.These results indicate an excellent solution to resolve inherent fire hazards associated with IFRs in polymers and achieve necessary efficiency for industrial applications.It also provides a new strategy for determining flammability characteristics and combustion mechanisms of polymer composites using in-situ chemiluminescence analysis. 展开更多
关键词 Polymer flammability Intumescent flame retardants Zeolitic imidazolate frameworks Thermal degradation Free radical analysis Flame retardant mechanism
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Syntheses,Crystal Structures and Properties of Two New Zn Based Boron Imidazolate Frameworks 认领 引用 被引量：2
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作者 BI Ming-Yue WEN Yi-Hang +1 位作者 ZHANG Hai-Xia ZHANG Jian 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2021年第7期865-870,838,共6页
Two new boron imidazolate frameworks(BIFs),Zn2[HBH(2-mim)3]2(1,2-PEA)2(EG)2(BIF-120,EG=ethylene glycol)and Zn[BH(2-mim)3](1,2-HPEA)(BIF-121),were successfully synthesized by mixing the KBH(2-mim)3 ligand and the semir... Two new boron imidazolate frameworks(BIFs),Zn2[HBH(2-mim)3]2(1,2-PEA)2(EG)2(BIF-120,EG=ethylene glycol)and Zn[BH(2-mim)3](1,2-HPEA)(BIF-121),were successfully synthesized by mixing the KBH(2-mim)3 ligand and the semirigid aromatic dicarboxylate ligand 1,2-benzenediacetic acid(1,2-H2PEA)under solvothermal conditions.In this paper,the two samples were structurally characterized by single-crystal X-ray diffraction and tested by infrared spectroscopy(IR),UV-visible spectroscopy(UV-Vis),thermogravimetric analysis TGA and X-ray powder diffractions.In addition,the solid-state luminescent properties of these crystals were also investigated. 展开更多
关键词 boron imidazolate frameworks crystal structure X-ray crystallography luminescent
In-situ incorporation of halloysite nanotubes with 2D zeolitic imidazolate framework-L based membrane for dye/salt separation 认领 引用 被引量：1
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作者 Yafei Su Xuke Zhang +2 位作者 Hui Li Donglai Peng Yatao Zhang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第6期103-111,共9页
Layered assembled membranes of 2D leaf-like zeolitic imidazolate frameworks(ZIF-L)nanosheets have received great attention in the field of water treatment due to the porous structure and excellent antibacterial abilit... Layered assembled membranes of 2D leaf-like zeolitic imidazolate frameworks(ZIF-L)nanosheets have received great attention in the field of water treatment due to the porous structure and excellent antibacterial ability,but the dense accumulation on the membrane surface and the low permeate flux greatly hinder their application.Herein,we synthesized m HNTs(modified halloysite nanotubes)/ZIF-L nanocomposites on modified m HNTs by in situ growth method.Interestingly,due to the different size of m HNTs and ZIF-L,m HNTs were packed in ZIF-L nanosheets.The hollow m HNTs provided additional transport channels for water molecules,and the accumulation of the ZIF-L nanosheets was decreased after assembling m HNTs/ZIF-L nanocomposites into membrane by filtration.The prepared m HNTs/ZIF-L membrane presented high permeate flux(59.6 L·m-2·h-1),which is 2-4 times of the ZIF-L membranes(14.8 L·m-2·h-1).Moreover,m HNTs/ZIF-L membranes are intrinsically antimicrobial,which exhibit extremely high bacterial resistance.We provide a controllable strategy to improve 2D ZIF-L assembles,and develops novel membranes using 2D package structure as building units. 展开更多
关键词 Zeolitic imidazolate framework Halloysite nanotubes 2D nanocomposites In-situ growth Dye/salt separation membrane Antibacterial property
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High-throughput model-building and screening of zeolitic imidazolate frameworks for CO2 capture from flue gas 认领 引用 被引量：1
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作者 Lixia Yang Chao Shi +1 位作者 Lin Li Yi Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第1期227-230,共4页
To find potential zeolitic imidazolate frameworks(ZIFs)for CO2capture from flue gas,we built 169,898 ZIF models from 84,949 hypothetical zeolite networks.By calculating their lattice energies,accessible volumes to ... To find potential zeolitic imidazolate frameworks(ZIFs)for CO2capture from flue gas,we built 169,898 ZIF models from 84,949 hypothetical zeolite networks.By calculating their lattice energies,accessible volumes to CO2,the isosteric adsorption heat(Qst)of H2 O,Henry’s constant ratio(SKH)of CO2/N2,percent regenerability(R%),CO2working capacity(ΔN CO2),CO2/N2adsorption selectivity(S CO2/N2)and adsorbent performance score(APS),we identi fied 49 hydrophobic ZIF structures that might outplay already-realised ZIFs built from the same imidazolate linkers for CO2capture from flue gas. 展开更多
关键词 Zeolitic imidazolate frameworks CO2capture Molecular simulations High-throughput computations Adsorption Flue gas
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Preparation of hybridizing zeolitic imidazolate frameworks with carboxymethylcellulose for adsorption separation of n-hexane/3-methylpentane 认领 引用
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作者 Xiujuan Li Le Chen +5 位作者 Dandan Zhu Song Yang Zhong Wu Mingyang He Zhihui Zhang Qun Chen 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2021年第1期103-109,共7页
A novel ZIF-8-CMC hybrid material was fabricated from the hybridization of ZIF-8 and carboxymethylcellulose(CMC) by impregnation method for n-hexane/3-methylpentane separation.The surface properties of ZIF-8 were tail... A novel ZIF-8-CMC hybrid material was fabricated from the hybridization of ZIF-8 and carboxymethylcellulose(CMC) by impregnation method for n-hexane/3-methylpentane separation.The surface properties of ZIF-8 were tailored by introducing CMC into ZIF-8 nanoparticles.In this work,adsorption separation of n-hexane(nHEX) and 3-methylpentane(3 MP) on ZIF-8-CMC were investigated by batch vapor-phase adsorption and liquid-phase breakthrough adsorption.The adsorption selectivity of nHEX/3 MP reversed from preferable adsorption of nHEX to preferable adsorption of 3 MP upon the increasing of CMC containing in the hybrid materials.As the temperature increases,the adsorption amounts of nHEX and 3 MP decrease.With the increasing of CMC contents,the nHEX uptake decreased,the uptake capacity of 3 MP increased gradually.For liquid-phase breakthrough adsorption,the dynamic adsorption capacity of nHEX also decreased with the increasing of temperature. 展开更多
关键词 Zeolitic imidazolate frameworks Carboxymethylcellulose(CMC) n-Hexane Adsorption separation
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A hybrid monolithic column based on flower-shaped zeolitic imidazolate framework for efficient capillary microextraction of brominated flame retardants 认领 引用
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作者 Xuemei Wang Xinglan Cui +4 位作者 Hong Ji Fangbing Wang Yacong Liu Xinzhen Du Xiaoquan Lu 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第10期3199-3201,共3页
A novel flower-shaped zeolitic imidazolate framework(ZIF) doped organic-inorganic hybrid monolithic column(ZIF-HMC) was prepared by a simple sol-gel "one-step" method and utilized for efficient capillary mic... A novel flower-shaped zeolitic imidazolate framework(ZIF) doped organic-inorganic hybrid monolithic column(ZIF-HMC) was prepared by a simple sol-gel "one-step" method and utilized for efficient capillary microextraction(CME) of four brominated flame retardants.The prepared monolithic was characterized by Fourier transform infrared,scanning electron microscopy,X-ray photoelectron spectroscopy,energy disperse spectroscopy,and N2 adsorption-desorption.The parameters of CME were optimized by orthogonal array design.Under the optimal conditions,the ZIF-HMC showed excellent extraction efficiency,the limit of detection(LODs) and the limit of quantification(LOQs) were in the range of0.52$3.1 mg/L and 1.7$10 mg/L,respectively,and the proposed method demonstrated good recovery(88.8%–116.6%) with the RSD less than 13.6% and a reusability of at least 30 times.The ZIF-HMC possessed great potential for separating organic pollutants and the strategy used here could be extended to prepare other derivatized HMC functionalized monoliths. 展开更多
关键词 Capillary microextraction Brominated flame retardants Hybrid monolithic column Zeolitic imidazolate framework
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Inducing pyroptosis and reprogramming macrophage via zeolitic imidazolate framework encapsulated-fullerene for two-pronged tumor immunotherapy 认领 引用
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作者 Zihao Sun Lei Liu +4 位作者 Jiacheng Sun Yuan Xu Mingming Zhen Chunru Wang Chunli Bai 《Bioactive Materials》 SCIE CSCD 2026年第2期559-570,共12页
Immunogenic antigen downregulation combined with an immunosuppressive tumor microenvironment(TME)remain major barriers to effective treatment of“cold”tumors.Here,we report a dual-functional nanotherapy that integrat... Immunogenic antigen downregulation combined with an immunosuppressive tumor microenvironment(TME)remain major barriers to effective treatment of“cold”tumors.Here,we report a dual-functional nanotherapy that integrates C70fullerene with hyaluronic acid(HA)–modified zeolitic imidazolate framework-8(ZIF-8)to enhance tumor immunogenicity and reprogram the TME.The resulting HA-C70@ZIF-8 nanocomposites exploit HAmediated CD44 targeting to promote selective tumor uptake and retention.Once internalized,acidic lysosomal conditions trigger Zn2+release from ZIF-8,causing ion overload,caspase-1 activation,gasdermin D cleavage,and pyroptotic tumor cell death accompanied by the release of damage-associated molecular patterns(DAMPs).Concurrently,encapsulated C70facilitates metabolic reprogramming of tumor-associated macrophages(TAMs)from an M2-to M1-like phenotype,thereby alleviating immunosuppression.Together,these mechanisms elicit robust immune activation and potentiate the efficacy of immune checkpoint blockade,offering a streamlined and impactful strategy for personalized tumor therapy and paving the way for novel approaches to highly effective immunotherapy. 展开更多
关键词 Fullerene Zeolitic imidazolate framework-8 Pyroptosis Tumor-associated macrophages Immunotherapy
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