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Novel Gradient p-Doping Strategy Enables Efficient Carbon-Based Hole Transport Layer-Free Perovskite Solar Cells 认领 引用
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作者 Junwei Xiang Siqi Jiang +10 位作者 Yanjie Cheng Weiting Du Yuan Shi Song Shen Bolun Zhang Qian Yue Xinyi Xu Anyi Mei Yang Zhou Yinhua Zhou Hongwei Han 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期99-111,共13页
Carbon-based hole transport layer-free(HTL-free)printable mesoscopic perovskite solar cells(p-MPSCs)are highly attractive for their low-cost and scalable fabrication.However,the intrinsically n-type nature of the pero... Carbon-based hole transport layer-free(HTL-free)printable mesoscopic perovskite solar cells(p-MPSCs)are highly attractive for their low-cost and scalable fabrication.However,the intrinsically n-type nature of the perovskite,combined with the lack of an HTL,severely impedes hole extraction and limits device performance.In this work,we innovatively introduce a polymer with strong electron-withdrawing capability as an additive into p-MPSCs.Owing to its large molecular size,this polymer spontaneously forms a negative gradient distribution from top to bottom within the mesoporous scaffold during fabrication.This distribution creates a favorable gradient p-doping profile within p-MPSCs,which facilitates more efficient hole transport,a finding corroborated by combined device simulation and cross-sectional photoluminescence mapping.Consequently,the optimized p-MPSCs exhibit an average open-circuit voltage enhancement of over 50 mV,a steady-state power conversion efficiency of 21.56%and operational stability exceeding 1500 h at 55℃ under simulated 1-sun illumination using a halogen lamp without a UV filter. 展开更多
关键词 Printable mesoscopic perovskite solar cells Gradient p-doping Hole transport layer free Carbon electrode Charge carrier dynamics
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Catalytic effect of nano-thick gold electrodes on p-doping of diselenides during annealing process 认领 引用
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作者 Yan Wang Yang Sun Jing Liu 《Nanotechnology and Precision Engineering》 EI CAS CSCD 2025年第3期66-73,共8页
Two-dimensional transition metal dichalcogenides(TMDs)show great promise for developing the next generation of electronic and optoelectronic devices.However,most TMDs have n-type or n-dominant bipolar characteristics,... Two-dimensional transition metal dichalcogenides(TMDs)show great promise for developing the next generation of electronic and optoelectronic devices.However,most TMDs have n-type or n-dominant bipolar characteristics,and this severely limits their potential for being designed as multi-functional heterostructures.Recently,thermal annealing has been reported as an easy means of p-doping TMDs,but the mechanism remains ambiguous,thereby preventing reliable outcomes and it becoming a mature doping technology for TMDs.Here,the mechanism of thermal annealing for p-doping a 2D selenide is investigated thoroughly,revealing the key role of the catalytic effect of nano-thick gold electrodes in achieving p-doping.As an example,2D SnSe2with a fairly high electron density of∼1018cm−3is used,and its electrical performance is greatly enhanced after thermal annealing when 30-nm-thick gold electrodes are deposited.The results of performing XPS and Auger electron spectroscopy on samples before and after annealing show that the p-doping effect is due to the oxidation of selenide atoms,during which the gold acts as a critical catalytic element.This method is also shown to be valid for other 2D selenides including WSe2and MoSe2,and the present findings offer new avenues for enriching the electrical properties of 2D selenides by means of annealing. 展开更多
关键词 Diselenide Annealing Field-effect transistor(FET) P-doping Nano-thick gold Catalytic
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In situ self-assembly green synthesis of P-doped tubular carbon nitride for photocatalytic activation of PMS to rapidly degrade organic pollutants 认领 引用 被引量：1
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作者 Xiaomei Chen Deping Wang +1 位作者 Kejun Tan Lin Dong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第1期280-291,共12页
Peroxymonosulfate(PMS)-assisted visible-light photocatalytic degradation of organic pollutants using graphitic carbon nitride(g-C3N4)presents a promising and environmentally friendly approach.However,pristine g-... Peroxymonosulfate(PMS)-assisted visible-light photocatalytic degradation of organic pollutants using graphitic carbon nitride(g-C3N4)presents a promising and environmentally friendly approach.However,pristine g-C3N4 suffers from limited visible-light absorption and low charge-carrier mobility.In this study,a phosphorus-doped tubular carbon nitride(5P-TCN)was synthesized via a precursor self-assembly method using phosphoric acid and melamine as raw materials,eliminating the need for organic solvents or templates.The 5P-TCN catalyst demonstrated enhanced visible-light absorption,improved charge transfer capability,and a 5.25-fold increase in specific surface area(31.092 m2/g),which provided abundant active sites to efficiently drive the PMS-assisted photocatalytic reaction.The 5P-TCN/vis/PMS system exhibited exceptional degradation performance for organic pollutants across a broad pH range(3–9),achieving over 92%degradation of Rhodamine B(RhB)within 15 min.Notably,the system retained>98%RhB degradation efficiency after three consecutive operational cycles,demonstrating robust operational stability and reusability.Moreover,key parameters influencing,active radi-cals,degradation pathways,and potential mechanisms for RhB degradation were systematically investigated.This work proposes a green and cost-effective strategy for developing high-efficiency photocatalysts,while demon-strating the exceptional capability of a PMS-assisted photocatalytic system for rapid degradation of RhB. 展开更多
关键词 Self-assembly P-doped tubular carbon nitride Photocatalysis PMS activation Synergy effect
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Self-floating Bi4O5Br2/P-doped C3N4/carbon fiber cloth with S-scheme heterostructure for boosted photocatalytic removal of emerging organic contaminants 认领 引用 被引量：1
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作者 Shijie Li Rui Li +8 位作者 Kexin Dong Yanping Liu Xin Yu Wenyao Li Tong Liu Zaiwang Zhao Mingyi Zhang Bin Zhang Xiaobo Chen 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2025年第9期37-49,共13页
The industrial implementation of Solar-driven photocatalysis is hampered by inefficient charge separation,poor reusability and hard retrieval of powdery catalysts.To conquer these drawbacks,a self-floating S-scheme Bi... The industrial implementation of Solar-driven photocatalysis is hampered by inefficient charge separation,poor reusability and hard retrieval of powdery catalysts.To conquer these drawbacks,a self-floating S-scheme Bi4O5Br2/P-doped C3N4/carbon fiber cloth(BB/PN/CC)composed of carbon fibers(CC)as the core and Bi4O5Br2/P-doped C3N4(BB/PN)nanosheets as the shell was constructed as a competent,recyclable cloth-shaped photocatalyst for safe and efficient degradation of aquacultural antibiotics.The BB/PN/CC fabric achieves an exceptional tetracycline degradation rate constant of 0.0118 min‒1,surpassing CN/CC(0.0015 min‒1),BB/CC(0.0066 min‒1)and PN/CC(0.0023 min‒1)by 6.9,0.8 and 4.1 folds,respectively.Beyond its catalytic prowess,the photocatalyst’s practical superiority is evident in its effortless recovery and environmental adaptability.The superior catalytic effectiveness stems from the S-scheme configuration,which retains the maximum redox capacities of the constituent BB and PN while enabling efficient spatial detachment of photo-carriers.X-ray photoelectron spectroscopy(XPS),in-situ XPS,and electron paramagnetic resonance analyses corroborate the S-scheme mechanism,revealing electron accumulation on PN and hole retention on BB under illumination.Density functional theory calculations further confirm S-scheme interfacial charge redistribution and internal electric field formation.This study advances the design of macroscopic S-scheme heterojunction photocatalysts for sustainable water purification. 展开更多
关键词 Bi4O5Br2/P-doped C3N4Self-floating S-scheme heterojunction Internal electric field Photocatalysis Antibiotic removal
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Controlled preparation of P-doped g-C3N4 nanosheets for efficient photocatalytic hydrogen production 认领 引用 被引量：15
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作者 Qiachun Lin Zesheng Li +4 位作者 Tingjian Lin Bolin Li Xichun Liao Huiqing Yu Changlin Yu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第10期2677-2688,共12页
Hydrogen production by photolysis of water by sunlight is an environmentally-friendly preparation technology for renewable energy.Graphitic carbon nitride(g-C3N4),despite with obvious catalytic effect,is still unsatis... Hydrogen production by photolysis of water by sunlight is an environmentally-friendly preparation technology for renewable energy.Graphitic carbon nitride(g-C3N4),despite with obvious catalytic effect,is still unsatisfactory for hydrogen production.In this work,phosphorus element is incorporated to tune g-C3N4's property through calcinating the mixture of g-C3N4 and Na H2PO2,sacrificial agent and co-catalyst also been supplied to help efficient photocatalytic hydrogen production.Phosphorus(P)doped g-C3N4 samples(PCN-S)were prepared,and their catalytic properties were studied.X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM)and ultraviolet diffuse reflection(UV-DRS)were used to study their structures and morphologies.The results show that the reaction rate of PCN-S is 318μmol·h^-1·g^-1,which is 2.98 times as high as pure carbon nitride nanosheets(CN)can do.Our study paves a new avenue,which is simple,environment-friendly and sustainable,to synthesize highly efficient P doping g-C3N4 nanosheets for solar energy conversion. 展开更多
关键词 Graphitic carbon nitride P-doping Carbon defect Pt co-catalyst Hydrogen evolution
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P-doped mesoporous carbons for high-efficiency electrocatalytic oxygen reduction 认领 引用 被引量：10
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作者 Hui Zhao Zhong-Pan Hu +2 位作者 Yun-Pei Zhu Li Ge Zhong-Yong Yuan 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2019年第9期1366-1374,共9页
Chemically modified carbonaceous materials have attained utmost attention in the fields of renewable energy storage and conversion,due to the controllable physicochemical properties,tailorable micro-anostructures,and ... Chemically modified carbonaceous materials have attained utmost attention in the fields of renewable energy storage and conversion,due to the controllable physicochemical properties,tailorable micro-anostructures,and respectable stability.Herein,P-doped mesoporous carbons were synthesized by using F127 as the soft template,organophosphonic acid as the P source and phenolic resin as the carbon source.Small amounts of iron species were introduced to act as a graphitization catalyst.The synthesized carbons exhibit the well-defined wormhole-like pore structure featuring high specific surface area and homogenously doped P heteroatoms.Notably,introducing iron species during the synthesis process can optimize the textural properties and the degree of graphitization of carbon materials.The doping amount of P has an important effect on the porous structure and the defect degree,which correspondingly influence the active sites and the oxygen reduction reaction(ORR)activity.The resultant material presents superior catalytic activity for the ORR,together with remarkably enhanced durability and methanol tolerance in comparison with the commercial Platinum catalyst,demonstrating the possibility for its use in electrode materials and electronic nanodevices for metal-air batteries and fuel cells. 展开更多
关键词 P-doping Mesoporous carbons Electrocatalyst Oxygen reduction reaction
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The influence of protic acid regulation of activated carbon on the performance of zinc catalysts in the acetylene acetoxylation 认领 引用
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作者 Qingle Wang Yuli Hou +3 位作者 Qinqin Wang Dekai Yuan Qianran Sun Bin Dai 《ENGINEERING Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期85-95,共11页
Heteroatom-doped carbon-based materials are acknowledged as a promising approach to enhance catalytic activity through modifications to their electronic structure and chemical characteristics.In this study,phosphorus-... Heteroatom-doped carbon-based materials are acknowledged as a promising approach to enhance catalytic activity through modifications to their electronic structure and chemical characteristics.In this study,phosphorus-doped activated carbon(PAC)-supported zinc catalysts,rich in Lewis acid sites for acetylene acetoxylation,were synthesized using a cost-effective and sustainable method.Characterization showed P-doping reduces electron density around zinc,facilitating electron transfer from acetic acid to zinc and enhancing its adsorption.The electronegativity difference between phosphorus and carbon generates weak and Lewis acid sites,significantly boosting catalytic performance.PAC doping enhanced resistance to carbon deposits and slowed zinc loss,thereby improving catalyst stability and activity.The optimized Zn/0.01PAC catalyst achieved 80%conversion of acetic acid,demonstrating the critical role of Lewis acid sites.This work provides an efficient solid acid catalyst and establishes a universal strategy for precisely tuning activated carbon surface acidity,advancing industrial application prospects. 展开更多
关键词 Zn-based catalyst P-doping acid sites acetylation of acetylene industrial catalysis
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P-doped CoSe2nanoparticles embedded in 3D honeycomb-like carbon network for long cycle-life Na-ion batteries 认领 引用 被引量：5
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作者 Jiajia Ye Xuting Li +4 位作者 Guang Xia Guanghao Gong Zhiqiang Zheng Chuanzhong Chen Cheng Hu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第18期100-107,共8页
We report for the first time a Na-ion battery anode material composed of P-doped CoSe2nanoparticles(P-CoSe2)with the size of 5–20 nm that are uniformly embed in a 3 D porous honeycomb-like carbon network.High r... We report for the first time a Na-ion battery anode material composed of P-doped CoSe2nanoparticles(P-CoSe2)with the size of 5–20 nm that are uniformly embed in a 3 D porous honeycomb-like carbon network.High rate capability and cycling stability are achieved simultaneously.The honeycomb-like carbon network is rationally designed to support high electrical conductivity,rapid Na-ion diffusion as well as the accommodation of the volume expansion from the active P-CoSe2nanoparticles.In particular,heteroatom P-doping within CoSe2introduces stronger P-Co bonds and additional P-Se bonds that significantly improve the structure stability of P-CoSe2for highly stable sodiation/desodiation over long-term cycling.P-doping also improves the electrical conductivity of the CoSe2nanoparticles,leading to highly elevated electrochemical kinetics to deliver high specific capacities at high current densities.Benefiting from the unique nanostructure and atomic-level P-doping,the P-CoSe2(2:1)/C anode delivers an excellent cycle stability with a specific capacity of 206.9 mA h g-1achieved at 2000 mA g-1after 1000 cycles.In addition,this material can be synthesized using a facile pyrolysis and selenization/phosphorization approach.This study provides new opportunities of heteroatom doping as an effective method to improve the cycling stability of Na-ion anode materials. 展开更多
关键词 CoSe2 P-doping Honeycomb-like carbons Anodes Sodium-ion batteries
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A novel P-doped and NCDs loaded g-C3N4 with enhanced charges separation for photocatalytic hydrogen evolution 认领 引用 被引量：3
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作者 Shuaiyang Zhang Yan Yang +4 位作者 Yunpu Zhai Jiaqi Wen Meng Zhang Jingkun Yu Siyu Lu 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第4期172-177,共6页
Graphite carbon nitride(g-C3N4) is a promising non-metal photocatalyst for photocatalytic hydrogen production, but its performance is still limited due to sluggish charges separation and low utilization of light... Graphite carbon nitride(g-C3N4) is a promising non-metal photocatalyst for photocatalytic hydrogen production, but its performance is still limited due to sluggish charges separation and low utilization of light.In this work, P-doped and N-doped carbon dots(NCDs) supported g-C3N4were successfully prepared via hydrothermal and polymerization reactions. The sub-bandgap formed by P-doping enhances the utilization of visible light, and the high electron density of P sites is conducive to the trapping of holes. NCDs also improve light utilization and, more importantly, act as electron acceptors and transporters to promote electron transport. The built-in electric field formed by the synergy of P-doping and NCDs-loading greatly promotes the separation of charges. The PCN/NCDs showed a significantly improved hydrogen evolution activity of 3731 μmol h-1g-1, which was 6.7 times that of pure carbon nitride(560 μmol h-1g-1). This strategy may be generalized to the design of g-C3N4-based photocatalysts, facilitating the separation of charges for enhanced catalytic activity. 展开更多
关键词 g-C3N4 N-doped carbon dots P-doping Photocatalyst Hydrogen evolution
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Hierarchical Self-assembly of Well-Defined Louver-Like P-Doped Carbon Nitride Nanowire Arrays with Highly Effcient Hydrogen Evolution 认领 引用 被引量：10
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作者 Bo Li Yuan Si +6 位作者 Qian Fang Ying Shi Wei‑Qing Huang Wangyu Hu Anlian Pan Xiaoxing Fan Gui‑Fang Huang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2020年第4期76-91,共16页
Self-assembled nanostructure arrays integrating the advantages of the intrinsic characters of nanostructure as well as the array stability are appealing in advanced materials.However,the precise bottom-up synthesis of... Self-assembled nanostructure arrays integrating the advantages of the intrinsic characters of nanostructure as well as the array stability are appealing in advanced materials.However,the precise bottom-up synthesis of nanostructure arrays without templates or substrates is quite challenging because of the general occurrence of homogeneous nucleation and the difficult manipulation of noncovalent interactions.Herein,we first report the precisely manipulated synthesis of well-defined louver-like P-doped carbon nitride nanowire arrays(L-PCN)via a supramolecular self-assembly method by regulating the noncovalent interactions through hydrogen bond.With this strategy,CN nanowires align in the outer frame with the separation and spatial location achieving ultrastability and outstanding photoelectricity properties.Significantly,this self-assembly L-PCN exhibits a superior visible light-driven hydrogen evolution activity of 1872.9μmol h^−1 g^−1,rendering a^25.6-fold enhancement compared to bulk CN,and high photostability.Moreover,an apparent quantum efficiency of 6.93%is achieved for hydrogen evolution at 420±15 nm.The experimental results and first-principles calculations demonstrate that the remarkable enhancement of photocatalytic activity of L-PCN can be attributed to the synergetic effect of structural topology and dopant.These findings suggest that we are able to design particular hierarchical nanostructures with desirable performance using hydrogen-bond engineering. 展开更多
关键词 Self-assembly Carbon nitride P-doped Nanowire arrays Hydrogen evolution
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P-doped BN nanosheets decorated graphene as the functional interlayer for Li–S batteries 认领 引用 被引量：12
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作者 Jing Zhang Wenzhe Ma +4 位作者 Zhenyu Feng Fangfang Wu Denghu Wei Baojuan Xi Shenglin Xiong 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2019年第12期54-60,共7页
Lithium–sulfur(Li–S)batteries have attracted much attention due to their ultrahigh theoretical specific capacity.However,serious capacity attenuation caused by shuttle effect still inhibits the performance improveme... Lithium–sulfur(Li–S)batteries have attracted much attention due to their ultrahigh theoretical specific capacity.However,serious capacity attenuation caused by shuttle effect still inhibits the performance improvement.Herein,a modified separator consists of the few-layer graphene as a highly conductive network and stable scaffold to support P-doped boron nitride(denoted as BN-P@GO)as the functional interlayer of Li–S batteries.The cell with the interlayer provides an initial discharge capacity as high as1045.3 mAh g^-1,and retains a high reversible capacity of 728.7 mAh g^-1 at 1 C after 500 cycles with a capacity decay of 0.061%per cycle.Moreover,the rate capability is also superior to cells with BN@GO or BN-P interlayers,i.e.reversible capcity of 457.9 mAh g^-1 even at 3 C.The excellent electrochemical performance is ascribed to the synergistic effect of physical barrier and chemical adsorption for dissolved polysulfides provided by the modified layer.Furhtermore,it also mitigates the polarization and promotes kinetic reactions of the cells.This work provides a concise and effective method for commercialization of lithium–sulfur batteries. 展开更多
关键词 P-doped BN nanosheets Graphene Multifunctional interlayer Lithium-sulfur batteries
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Synergistic effect of Co(Ⅱ)-hole and Pt-electron cocatalysts for enhanced photocatalytic hydrogen evolution performance of P-doped g-C3N4 认领 引用 被引量：9
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作者 Kouhua Sun Jun Shen +4 位作者 Qinqin Liu Hua Tang Mingyi Zhang Syed Zulfiqar Chunsheng Lei 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第1期72-81,共10页
g-C3N4 is a metal-free semiconductor and a potential candidate for photocatalytic H2 production,however,the drawbacks,rapid recombination rate and limited migration efficiency of photogenerated carriers,restrict its p... g-C3N4 is a metal-free semiconductor and a potential candidate for photocatalytic H2 production,however,the drawbacks,rapid recombination rate and limited migration efficiency of photogenerated carriers,restrict its photocatalytic activity.Herein,Co(II)as a hole cocatalyst modified P-doped g-C3N4 were successfully prepared to ameliorate the separation efficiency of photoinduced carriers and enhance the photocatalytic hydrogen production.The photocatalytic results demonstrated that the P-doped g-C3N4(PCN)exhibited higher photocatalytic activity compared with pure g-C3N4,while Co(II)/PCN photocatalyst exhibited further enhancement of photocatalytic performance.The proposed possible mechanism based on various characterizations is that P-doping can modulate the electronic structure of g-C3N4 to boost the separation of photogenerated-e-and h+;while the synergistic effect of both Co(II)(as hole cocatalyst)and Pt(as electron cocatalyst)can not only lead to the directional shunting of photogenerated e+-h?pairs,but further accelerate the photogenerated electrons transfer to Pt in order to join the photocatalytic reduction process for hydrogen evolution.As a result,the transportation and separation of photoinduced carriers were accelerated to greatest extent in the Pt/Co(II)/PCN photocatalyst. 展开更多
关键词 Photocatalytic H2 production Hole cocatalyst Electron cocatalyst P-doped g-C3N4
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N-doped graphene quantum dot-decorated N-TiO2/P-doped porous hollow g-C3N4 nanotube composite photocatalysts for antibiotic photodegradation and H2 production 认领 引用 被引量：6
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作者 Jingshu Yuan Yao Zhang +2 位作者 Xiaoyan Zhang Junjie Zhang Shen’gen Zhang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2024年第1期165-178,共14页
Exclusive responsiveness to ultraviolet light (~3.2 eV) and high photogenerated charge recombination rate are the two primary drawbacks of pure TiO2. We combined N-doped graphene quantum dots (N-GQDs), morphology r... Exclusive responsiveness to ultraviolet light (~3.2 eV) and high photogenerated charge recombination rate are the two primary drawbacks of pure TiO2. We combined N-doped graphene quantum dots (N-GQDs), morphology regulation, and heterojunction construction strategies to synthesize N-GQD/N-doped TiO2/P-doped porous hollow g-C3N4 nanotube (PCN) composite photocatalysts (denoted as G-TPCN). The optimal sample (G-TPCN doped with 0.1wt% N-GQD, denoted as 0.1% G-TPCN) exhibits significantly enhanced photoabsorption, which is attributed to the change in bandgap caused by elemental doping (P and N), the improved light-harvesting resulting from the tube structure, and the upconversion effect of N-GQDs. In addition, the internal charge separation and transfer capability of0.1% G-TPCN are dramatically boosted, and its carrier concentration is 3.7, 2.3, and 1.9 times that of N-TiO2, PCN, and N-TiO2/PCN(TPCN-1), respectively. This phenomenon is attributed to the formation of Z-scheme heterojunction between N-TiO2 and PCNs, the excellent electron conduction ability of N-GQDs, and the short transfer distance caused by the porous nanotube structure. Compared with those of N-TiO2, PCNs, and TPCN-1, the H2 production activity of 0.1%G-TPCN under visible light is enhanced by 12.4, 2.3, and 1.4times, respectively, and its ciprofloxacin (CIP) degradation rate is increased by 7.9, 5.7, and 2.9 times, respectively. The optimized performance benefits from excellent photoresponsiveness and improved carrier separation and migration efficiencies. Finally, the photocatalytic mechanism of 0.1% G-TPCN and five possible degradation pathways of CIP are proposed. This study clarifies the mechanism of multiple modification strategies to synergistically improve the photocatalytic performance of 0.1% G-TPCN and provides a potential strategy for rationally designing novel photocatalysts for environmental remediation and solar energy conversion. 展开更多
关键词 N-doped TiO2 N-doped graphene quantum dots P-doped g-C3N4 porous hollow nanotube heterojunction photocatalysis
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Coupling Co2P nanoparticles onto N,P-doped biomass-derived carbon as efficient electrocatalysts for flexible Zn-air batteries 认领 引用 被引量：2
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作者 Shu-Qi Li Kang Sun +8 位作者 Yan-Yan Liu Shu-Ling Liu Jing-Jing Zhou Wen-Bo Zhang Yi-Hang Lu Xiang-Meng Chen Xiao-Peng Wang Bao-Jun Li Jian-Chun Jiang 《Rare Metals》 SCIE EI CAS CSCD 2024年第10期4982-4991,共10页
Catalysts for oxygen conversion play an important role in energy storage and conversion technologies such as metal-air batteries.Developing highly active stable,and low-cost catalysts is critical for further implement... Catalysts for oxygen conversion play an important role in energy storage and conversion technologies such as metal-air batteries.Developing highly active stable,and low-cost catalysts is critical for further implementation of the above technologies.Herein,an efficien oxygen electrocatalyst with Co2P nanoparticles(NPs)coupling onto N,P-doped porous carbon nanosheets(Co2P@NPAC)derived from cotton stalk is successfully designed and prepared via activation,hydrothermal treatment,and pyrolysis procedure.The excellent properties of electrical conductivity,mass transfer,and synergistic integration between Co2P and N,P-doped carbon endow Co2P@NPAC composite with superior oxygen reduction reaction/oxygen evolution reaction(ORR/OER)performance.Co2P@NPAC catalyst achieves ORR activity with half-wave potential of 0.85 V and high OER activity with overpotential of 261 mV at 10 mA·cm-2.The flexible Zn-air batteries(ZABs)based on Co2P@NPAC catalyst revea outstanding performances with a high open-circuit voltage(1.38 V),a peak power density of(75 mW·cm-2),and a low charge-discharge voltage gap(0.74 V,~200 cycles)The flexible ZABs express the stable discharge-charge voltage gap at various bending states.This work provides interesting inspiration for the ingenious design of efficien carbon electrocatalysts from biomass with potential application of energy storage and conversion devices. 展开更多
关键词 Cotton stalk N P-doped activated carbon Oxygen reduction reaction Flexible Zn-air batteries
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A comparative study on p-doping behavior of polythiophenes with CH_3SO_3H 认领 引用
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作者 IMIT Mokhtar YAMAMOTO Takakazu IMIN Patigul 《Science China Chemistry》 CAS 2007年第1期18-22,共5页
Four kinds of polythiophenes have been doped with CH3SO3H in CHCl3 under air,oxygen,and nitrogen. In the doping of two types of poly(3-hexylthiophene)s,P3HexTh(Zn/Ni)and P3HexTh(Fe)with different contents of a head-to... Four kinds of polythiophenes have been doped with CH3SO3H in CHCl3 under air,oxygen,and nitrogen. In the doping of two types of poly(3-hexylthiophene)s,P3HexTh(Zn/Ni)and P3HexTh(Fe)with different contents of a head-to-tail unit,the p-doping occurs at a similar rate.The reaction between poly(3-dodecylthiophene),P3DodTh,and the acid takes place more rapidly.P3OBuTh with a butoxy substituent undergoes more facile p-doping and receives photochemical reaction with CHCl3,and this reaction obeys a pseudo-first-order rate law with a rate constant kobs of 1.42×10-5s-1at room tempera- ture. 展开更多
关键词 polythiophenes p-doping methanesulfonic acid
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MOF-derived beaded stream-like nitrogen and phosphorus-codoped carbon-coated Fe3O4nanocomposites via lattice-oxygen-mediated mechanism for efficient water oxidation 认领 引用
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作者 Lin Zhang Jianlong Li +3 位作者 Maoyuan Hu Yao Xu Xiaoli Xiong Zhaoyu Jin 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第8期456-460,共5页
It is necessary to adopt a specific strategy to construct an efficient and low-cost transition metal-based composite to replace the precious metal-based electrocatalyst for OER catalytic processes.In this work,a beade... It is necessary to adopt a specific strategy to construct an efficient and low-cost transition metal-based composite to replace the precious metal-based electrocatalyst for OER catalytic processes.In this work,a beaded stream-like N and P-codoped carbon-coated Fe3O4nanocomposite(N,P-Fe3O4@C)is derived from MIL-88A by two-step annealing.The unique 3D nanostructure and amorphous N-doped carbon layer enlarge the number of active sites,and P doping changes the pathway from AEM to LOM.The synergistic effect of these factors results in N,P-Fe3O4@C presenting excellent OER catalytic activity with an overpotential of 201 mV(η10),a Tafel slope of 57.1 mV/dec and stable operation for 100 h(the current density is 10 mA/cm2).Density functional theory calculations and electrochemical tests reveal that the P doping enhances the overlap of Fe 3d orbital bands and O 2p orbitals,and thus significantly increases the metaloxygen covalency,triggering the pathway transition from AEM to LOM.This work provides a new way to construct more efficient transition metal-based composite carbon materials. 展开更多
关键词 MOF-derived catalyst P-doping Electrocatalysis Lattice oxyg enmechanism Oxygen evolution reaction
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Band structure engineering of phosphorus doped Ta3N5 for efficient photoelectrochemical water oxidation 认领 引用
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作者 Congzhao Dong Yajun Zhang +2 位作者 Yingpu Bi Zeyu Li Yong Ding 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第12期373-377,共5页
Constrained by severe bulk charge recombination,the actual photocurrent density of tantalum nitride(Ta3N5)photoanode is much lower than the theoretical maximum value.Herein,we report the doping of phosphorus,a n... Constrained by severe bulk charge recombination,the actual photocurrent density of tantalum nitride(Ta3N5)photoanode is much lower than the theoretical maximum value.Herein,we report the doping of phosphorus,a non-metallic element distinct from oxygen,into Ta3N5,resulting in a photocurrent density 9 times higher than that of pristine Ta3N5.Systematic characterization reveals that the phosphorus doping simultaneously enhances the bulk charge separation efficiency and surface charge injection efficiency of Ta3N5,and induces favorable band energy restructuring.Specifically,a type-II homojunction formed between phosphorus-doped near-surface region and bulk Ta3N5 effectively promotes the separation and transfer of photogenerated holes and electrons.Further modification with a Ni Fe-based cocatalyst enables the optimized photoanode to deliver a photocurrent density of 10 mA/cm2 at 1.23 V versus the reversible hydrogen electrode(RHE)and an applied bias photo-to-current efficiency of 1.78%at 0.95 V versus RHE.Our work provides a foundation for the development of a broader range of non-metal doped semiconductors. 展开更多
关键词 Ta3N5 PEC water splitting Photoanode P-doped Band structure engineering
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MOF derived phosphorus doped cerium dioxide nanorods modified separator as efficient polysulfide barrier for advanced lithium-sulfur batteries 认领 引用
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作者 Xinyun Liu Long Yuan +6 位作者 Xiaoli Peng Shilan Li Shengdong Jing Shengjun Lu Hua Lei Yufei Zhang Haosen Fan 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第10期563-569,共7页
Owing to the advantages of high energy density,low cost,abundant sulfur reserves and environmentally friendly nature,lithium-sulfur batteries(LSBs)were considered as one of the potential candidates of energy storage d... Owing to the advantages of high energy density,low cost,abundant sulfur reserves and environmentally friendly nature,lithium-sulfur batteries(LSBs)were considered as one of the potential candidates of energy storage devices for the next generation.However,the significant challenges in this area stem from the sluggish reaction kinetics of the insoluble Li2S product and the capacity degradation triggered by the severe shuttle effect of polysulfides.It has been firmly established through numerous studies that modifying separators is an effective approach to enhance the properties of LSBs by facilitating the catalytic kinetic conversion and chemical adsorption of lithium polysulfides(Li PSs).In this work,we report a straightforward method for fabrication of the phosphorus doped porous CeO2(P-CeO2)as separator modifier to accelerate the catalytic kinetic conversion of polysulfides and effectively inhibit the shuttle effect in LSBs.Through coin batteries tests,P-CeO2modified PP separator(P-CeO2//PP)exhibits remarkable electrochemical performance.It demonstrates a high initial capacity of 1180 mAh/g at 0.5 C,surpassing the performance of the bare CeO2//PP separator.Furthermore,the P-CeO2//PP separator demonstrates enhanced cycling stability,with a low-capacity fading rate of only 0.048%per cycle over 1000 cycles at 2 C.In compared with bare CeO2//PP,P-CeO2//PP exhibits high redox peak current,enhanced adsorption property of Li2S6and early Li2S precipitation.These results highlight the superior performance of the P-CeO2//PP separator compared to the bare CeO2//PP separator.Hence,this research presents a successful strategy for the modification of LIBs separator with improved electrochemical performance and cycle stability. 展开更多
关键词 Li-S batteries P-doped CeO2 Separator modification Polysulfide barrier Catalytic conversion
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P doped Ni3S2and Ni heterojunction bifunctional catalysts for electrocatalytic 5-hydroxymethylfurfural oxidation coupled hydrogen evolution reaction 认领 引用
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作者 Mengzhao Liu Jie Yin +4 位作者 Chengjian Wang Weiji Wang Yuan Gao Mengxia Yan Ping Geng 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第9期384-389,共6页
The biomass electrochemical oxidation coupled with hydrogen evolution reaction has received widespread attention due to its carbon-neutral and sustainable properties.The electrosynthesis of 2,5-furanodicarboxylic acid... The biomass electrochemical oxidation coupled with hydrogen evolution reaction has received widespread attention due to its carbon-neutral and sustainable properties.The electrosynthesis of 2,5-furanodicarboxylic acid(FDCA)from 5-hydroxymethylfurfural(HMF)oxidation is one of the most promising means for the production of bioplastic monomers.In this work,we constructed a novel P-doped Ni3S2and Ni heterojunction on nickel foam(P-Ni3S2/Ni/NF)using electrodeposition methods and thermal sulfuration techniques as a bifunctional catalyst for the simultaneous anodic oxidation of HMF to FDCA(HMFOR)and the cathodic hydrogen evolution reaction(HER).On one hand,the synergistic promotion of P doping and the heterojunction of Ni3S2and Ni accelerated electron transfer,and on the other hand,the structure of three-dimensional microsphere stacking on NF surface to form macropores enhances the exposure of catalytically active sites.The prepared P-Ni3S2/Ni/NF exhibited remarkable performance with high HMF conversion(99.2%),FDCA yield(98.1%),and Faraday efficiency(98.8%),and excellent stability with good product selectivity for 7 consecutive cycles,which stands at a higher level than majority of previously published electrocatalysts.Furthermore,P-Ni3S2/Ni/NF also shows a significant response in HER.By using HMFOR and HER as the anodic reaction and cathodic reaction,respectively,the biomass upgrading and hydrogen production can be carried out simultaneously.The synthesized P-Ni3S2/Ni/NF only need a voltage of 1.31V to achieve a current density of 10mA/cm2in a two-electrode system of HMFOR and HER,which is much lower than that of 1.48 V in OER and HER process,thus potentially reducing the cost of this process. 展开更多
关键词 5-Hydroxymethylfurfural oxidation Hydrogen evolution reaction Bifunctional electrocatalyst P-doped Ni3S2
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Facile Semiconductor p-n Homojunction Nanowires with Strategic p-Type Doping Engineering Combined with Surface Reconstruction for Biosensing Applications 认领 引用 被引量：6
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作者 Liuan Li Shi Fang +12 位作者 Wei Chen Yueyue Li Mohammad Fazel Vafadar Danhao Wang Yang Kang Xin Liu Yuanmin Luo Kun Liang Yiping Dang Lei Zhao Songrui Zhao Zongzhi Yin Haiding Sun 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第10期15-30,共16页
Photosensors with versatile functionalities have emerged as a cornerstone for breakthroughs in the future optoelectronic systems across a wide range of applications.In particular,emerging photoelectrochemical(PEC)-typ... Photosensors with versatile functionalities have emerged as a cornerstone for breakthroughs in the future optoelectronic systems across a wide range of applications.In particular,emerging photoelectrochemical(PEC)-type devices have recently attracted extensive interest in liquid-based biosensing applications due to their natural electrolyte-assisted operating characteristics.Herein,a PEC-type photosensor was carefully designed and constructed by employing gallium nitride(GaN)p-n homojunction semiconductor nanowires on silicon,with the p-GaN segment strategically doped and then decorated with cobalt-nickel oxide(CoNiOx).Essentially,the p-n homojunction configuration with facile p-doping engineering improves carrier separation efficiency and facilitates carrier transfer to the nanowire surface,while CoNiOxdecoration further boosts PEC reaction activity and carrier dynamics at the nanowire/electrolyte interface.Consequently,the constructed photosensor achieves a high responsivity of 247.8 mA W-1while simultaneously exhibiting excellent operating stability.Strikingly,based on the remarkable stability and high responsivity of the device,a glucose sensing system was established with a demonstration of glucose level determination in real human serum.This work offers a feasible and universal approach in the pursuit of high-performance bio-related sensing applications via a rational design of PEC devices in the form of nanostructured architecture with strategic doping engineering. 展开更多
关键词 p-n GaN nanowires Strategic p-doping Surface decoration Photoelectrochemical sensor Glucose sensing
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