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Bismuth-based architectures engineering for selective CO2 electroreduction to formate 认领 引用
1
作者 Xiaoli Zhao Lijuan Yang +4 位作者 Yong Hao Yi Cheng Fei Li Xinghua Zhu Ming Huang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第5期168-184,共17页
Electrocatalytic CO2 reduction to formate using renewable energy offers a promising route for sustainable chemical production and carbon utilization.Bismuth-based catalysts stand out for their exceptional selectivi... Electrocatalytic CO2 reduction to formate using renewable energy offers a promising route for sustainable chemical production and carbon utilization.Bismuth-based catalysts stand out for their exceptional selectivity towards formate,combining intrinsic advantages with practical viability.This review critically examines recent advances in strategically tailoring bismuth-based catalysts for selective CO2-to-formate conversion.Moving beyond conventional material classifications,we emphasize mechanistic understanding of the reaction pathways and active sites governing formate generation.Crucially,we dissect the synthesis strategies enabling precise control over catalyst properties—ranging from metallic bismuth nanostructures and single atoms to tailored compounds,heterostructures,and alloys—and link these design principles to performance optimization.In addition,we incorporate operando characterization and computational insights within catalyst-specific case studies to examine selected dynamic reaction mechanisms and key enhancement mechanisms under operational conditions.Finally,we outline forward-looking research trajectories,addressing critical challenges like achieving industrially relevant performance and stability,and proposing innovative pathways focused on advanced catalyst architectures,microenvironment engineering,and predictive frameworks for scalable implementation. 展开更多
关键词 Electrocatalytic CO2reduction Bismuth-based catalysts Formate Catalyst design Operando characterization Reaction mechanism
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Anion-regulated reconstruction of bismuth-based electrocatalysts for enhanced electrocatalytic CO2 reduction 认领 引用
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作者 Lili Wang Bangwei Deng +5 位作者 Hongtao Xie Xianlong Lu Pengcheng Xiang Xueyang Zhao Yizhao Li Fan Dong 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第2期598-609,I0014,共12页
Elucidating the active site formation mechanism of bismuth(Bi)-based catalysts in electrochemical CO2reduction remains challenging for achieving high activity,selectivity,and long-term stability.Here we confirm thr... Elucidating the active site formation mechanism of bismuth(Bi)-based catalysts in electrochemical CO2reduction remains challenging for achieving high activity,selectivity,and long-term stability.Here we confirm through experimental results that Bi-based catalysts containing halogen ions(I-,Cl-,Br-)and SO42-maintain the system stability,keeping Faraday efficiency of formic acid above90%in the current range of 50-800 mA cm-2.In contrast,anions containing S2-and NO3-in the electrolyte can be reduced to produce by-products.These anions and their by-products could poison the active center,leading to increased side reactions and thus significantly reducing the Faraday efficiency of formic acid.The combination of non-in situ and in situ characterization results revealed that the Bi-based catalysts all underwent the transition from the initial state to the Bi/Bi2O2CO3(BOC)intermediate state in high-concentration KHCO3 solution,and the different anions could selectively modulate the degree of exposure of specific crystalline surfaces of BOC.At the late stage of the reaction,BOC was completely converted to metal Bi and became the real active center.Combined with in situ IR and DFT calculations,it is further verified that*OCHO is the key intermediate on the metallic Bi surface,which is most favorable for formic acid formation.This study reveals the key mechanism by which anions affect the formation of active sites via modulating the catalyst reconstruction process,which provides an important theoretical basis for the design and optimization of test conditions of Bi-based catalysts. 展开更多
关键词 Bismuth-based catalysts Surface reconstruction Electrocatalytic CO2reduction Anion effects In situ spectroscopy
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Advanced Bismuth-Based Anode Materials for Efficient Potassium Storage:Structural Features,Storage Mechanisms and Modification Strategies 认领 引用 被引量：1
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作者 Yiye Tan Fanglan Mo Hongyan Li 《Nano-Micro Letters》 SCIE EI CAS CSCD 2025年第6期1-39,共39页
Potassium-ion batteries(PIBs)are considered as a promising energy storage system owing to its abundant potassium resources.As an important part of the battery composition,anode materials play a vital role in the futur... Potassium-ion batteries(PIBs)are considered as a promising energy storage system owing to its abundant potassium resources.As an important part of the battery composition,anode materials play a vital role in the future development of PIBs.Bismuth-based anode materials demonstrate great potential for storing potassium ions(K+)due to their layered structure,high theoretical capacity based on the alloying reaction mechanism,and safe operating voltage.However,the large radius of K+inevitably induces severe volume expansion in depotassiation/potassiation,and the sluggish kinetics of K+insertion/extraction limits its further development.Herein,we summarize the strategies used to improve the potassium storage properties of various types of materials and introduce recent advances in the design and fabrication of favorable structural features of bismuth-based materials.Firstly,this review analyzes the structure,working mechanism and advantages and disadvantages of various types of materials for potassium storage.Then,based on this,the manuscript focuses on summarizing modification strategies including structural and morphological design,compositing with other materials,and electrolyte optimization,and elucidating the advantages of various modifications in enhancing the potassium storage performance.Finally,we outline the current challenges of bismuth-based materials in PIBs and put forward some prospects to be verified. 展开更多
关键词 Bismuth-based materials Potassium-ion batteries Anode Potassium storage mechanism Modification strategies
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Advances in electrochemical reduction of carbon dioxide to formate over bismuth-based catalysts 认领 引用 被引量：21
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作者 Yu-Hong Wang Wen-Jun Jiang +4 位作者 Wei Yao Zai-Lun Liu Zhe Liu Yong Yang Li-Zhen Gao 《Rare Metals》 SCIE EI CAS CSCD 2021年第9期2327-2353,共27页
Selective CO2 reduction to formate with highadded value is one of the most technologically and economically feasible pathways to realize electrochemical CO2 fixation. Bismuth-based catalysts have the advantages ... Selective CO2 reduction to formate with highadded value is one of the most technologically and economically feasible pathways to realize electrochemical CO2 fixation. Bismuth-based catalysts have the advantages of nontoxicity, low cost, high abundance, as well as excellent stability. In addition, bismuth-based catalysts display excellent selectivity for the electrochemical reduction of CO2 to formate in aqueous electrolytes due to high-hydrogen evolution overpotential. Hence, bismuthbased catalysts are by far the most commercially available materials for electrochemical reduction of CO2 to formate.In this review, the electrochemical reduction of CO2 to formate over bismuth-based catalysts is elaborated. Firstly,this review describes performance evaluation indexes,evaluation systems and reaction mechanisms of the electrochemical reduction of CO2 to formate over bismuthbased catalysts. Subsequently, the research means to reveal the reaction mechanism of electrochemical reduction of CO2 to formate over bismuth-based catalysts and the performance improvement strategies of the reaction are described in detail. Finally, the opportunities and challenges in this encouraging field are discussed. We believe that this review will contribute to further development of electrochemical reduction of CO2 to formate over bismuthbased catalysts. 展开更多
关键词 Electrochemical CO2reduction Formate Bismuth-based catalysts Reaction research Performance improvement
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Oxygen vacancy mediated bismuth-based photocatalysts 认领 引用 被引量：15
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作者 Jiaqi Tian Jianpeng Li +3 位作者 Yadan Guo Zhongyi Liu Bin Liu Jun Li 《Advanced Powder Materials》 2024年第4期57-91,共35页
Sunlight-driven photocatalysis,which can produce clean fuels and mitigate environmental pollution,has received extensive research attention due to its potential for addressing both energy shortages and environmental c... Sunlight-driven photocatalysis,which can produce clean fuels and mitigate environmental pollution,has received extensive research attention due to its potential for addressing both energy shortages and environmental crises.Bismuth(Bi)-based photocatalysts with broad spectrum solar-light absorption and tunable structures,exhibit promising applications in solar-driven photocatalysis.Oxygen vacancy(OV)engineering is a widely recognized strategy that shows great potential for accelerating charge separation and small molecule activation.Based on OV engineering,this review focuses on Bi-based photocatalysts and provides a comprehensive overview including synthetic methods,regulation strategies,and applications in photocatalytic field.The synthetic methods of Bibased photocatalysts with OVs(BPOVs)are classified into hydrothermal,solvothermal,ultraviolet light reduction,calcination,chemical etching,and mechanical methods based on different reaction types,which provide the possibility for the structural regulation of BPOVs,including dimensional regulation,vacancy creation,elemental doping,and heterojunction fabrication.Furthermore,this review also highlights the photocatalytic applications of BPOVs,including CO2reduction,N2 fixation,H2 generation,O2evolution,pollutant degradation,cancer therapy,and bacteria inactivation.Finally,the conclusion and prospects toward the future development of BPOVs photocatalysts are presented. 展开更多
关键词 Bismuth-based photocatalysts Oxygen vacancy Synthetic methods Structural regulation Broad spectrum light Photocatalysis
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Recent advances of bismuth-based electrocatalysts for CO2reduction:Strategies,mechanism and applications 认领 引用 被引量：4
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作者 Xiao-Du Liang Na Tian +2 位作者 Sheng-Nan Hu Zhi-You Zhou Shi-Gang Sun 《Materials Reports(Energy)》 2023年第2期4-26,I0002,共23页
Electrocatalytic CO2reduction reaction(CO2RR),driven by clean electric energy such as solar and wind,can not only alleviate environmental greenhouse effect stemming from excessive CO2emissions,but also realiz... Electrocatalytic CO2reduction reaction(CO2RR),driven by clean electric energy such as solar and wind,can not only alleviate environmental greenhouse effect stemming from excessive CO2emissions,but also realize the storage of renewable energy,for it guarantees the production of value-added chemicals and fuels.Among CO2RR products,formic acid shows great advantages in low energy consumption and high added-value,and thus producing formic acid is generally considered as a profitable line for CO2RR.Bismuth-based electrocatalysts exhibit high formic acid selectivity in CO2RR.Herein,we review the recent progress in bismuth-based electrocatalysts for CO2RR,including material synthesis,performance optimization/validation,and electrolyzers.The effects of morphologies,structure,and composition of bismuth-based electrocatalysts on CO2RR performance are highlighted.Simultaneously,in situ spectroscopic characterization and DFT calculations for reaction mechanism of CO2RR on Bi-based catalysts are emphasized.The applications and optimization of electrolyzers with high current density for CO2RR are summarized.Finally,conclusions and future directions in this field are prospected. 展开更多
关键词 Bismuth-based electrocatalysts Electrochemical CO2reduction reaction Formate Structure-activity relationship Electrolyzer
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A comparative study of bismuth-based photocatalysts with titanium dioxide for perfluorooctanoic acid degradation 认领 引用 被引量：8
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作者 Aziz-Ur-Rahim Bacha Iqra Nabi +3 位作者 Zhaoyang Fu Kejian Li Hanyun Cheng Liwu Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2019年第12期2225-2230,共6页
Bismuth-based material has been broadly studied due to their potential applications in various areas,especially used as promising photocatalysts for the removal of persistent organic pollutants(POPs) and several appro... Bismuth-based material has been broadly studied due to their potential applications in various areas,especially used as promising photocatalysts for the removal of persistent organic pollutants(POPs) and several approaches have been adopted to tailor their features.Herein,the bismuth-based photocatalysts(BiOCl,BiPO4,BiOPO4/BiOCl) were synthesized by hydrothermal method and advanced characterization techniques(XRD,SEM,EDS elemental mapping,Raman and UV-vis DRS) were employed to analyze their morphology,crystal structure,and purity of the prepared photocatalysts.These synthesized photocatalysts offered a praiseworthy activity as compared to commercial TiO2(P25) for the degradation of model pollutant perfluorooctanoic acid(PFOA) under 254 nm UV light.It was interesting to observe that all synthesized photocatalysts show significant degradation of PFOA and their photocatalytic activity follows the order:bismuth-based catalysts> TiO2(P25)> without catalyst.Bismuth-based catalysts degraded the PFOA by almost 99.99% within 45 min while this degradation efficiency was 66.05% with TiO2 under the same reaction condition.Our work shows that the bismuth-based photocatalysts are promising in PFOA treatment. 展开更多
关键词 Photocatalysis Perfluorooctanoic acid Bismuth-based catalysts TiO2 254 nm UV light Persistent organic pollutants
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Electronic modulation of two-dimensional bismuth-based nanosheets for electrocatalytic CO2 reduction to formate: A review 认领 引用 被引量：2
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作者 Guan Wang Fangyuan Wang +5 位作者 Peilin Deng Jing Li Chongtai Wang Yingjie Hua Yijun Shen Xinlong Tian 《Materials Reports(Energy)》 2023年第1期51-64,I0002,共14页
Electrocatalytic CO2 reduction reaction(eCO2 RR)has significant relevance to settle the global energy crisis and abnormal climate problem via mitigating the excess emission of waste CO2 and producing high-val... Electrocatalytic CO2 reduction reaction(eCO2 RR)has significant relevance to settle the global energy crisis and abnormal climate problem via mitigating the excess emission of waste CO2 and producing high-value-added chemicals.Currently,eCO2 RR to formic acid or formate is one of the most technologically and economically viable approaches to realize high-efficiency CO2 utilization,and the development of efficient electrocatalysts is very urgent to achieve efficient and stable catalytic performance.In this review,the recent advances for two-dimensional bismuth-based nanosheets(2D Bi-based NSs)electrocatalysts are concluded from both theoretical and experimental perspectives.Firstly,the preparation strategies of 2D Bi-based NSs in aspects to precisely control the thickness and uniformity are summarized.In addition,the electronic regulation strategies of 2D Bi-based NSs are highlighted to gain insight into the effects of the structure-property relationship on facilitating CO2 activation,improving product selectivity,and optimizing carrier transport dynamics.Finally,the considerable challenges and opportunities of 2D Bi-based NSs are discussed to lighten new directions for future research of eCO2 RR. 展开更多
关键词 CO2 electroreduction Two-dimensional structure Bismuth-based catalysts Preparation strategy Electronic structure regulation Formate
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Crossover from Two-to Three-dimensional Superconducting States in Bismuth-based Cuprate Superconductor 认领 引用
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作者 SUN Liling 《Bulletin of the Chinese Academy of Sciences》 2019年第4期239-240,共2页
To decipher the mechanism of high temperature superconductivity(SC),it is important to know how the superconducting pairing emerges from the unusual normal states of cuprate superconductors,including pseudogap,anomalo... To decipher the mechanism of high temperature superconductivity(SC),it is important to know how the superconducting pairing emerges from the unusual normal states of cuprate superconductors,including pseudogap,anomalous Fermi liquid and strange metal(SM).A long-standing issue under debate is how the superconducting pairing is formed and condensed in the SM phase because the superconducting transition temperature is the highest in this phase. 展开更多
关键词 Superconducting States Bismuth-based Cuprate Superconductor Crossover from Two
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Dynamic structural evolution and active site identification of bismuth-based catalysts for electrochemical CO2 reduction 认领 引用
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作者 Mengyang Duan Yuxin Xie +3 位作者 Haiming Han Guanjie Li Tingting Cui Ming Xu 《Nano Research》 SCIE EI CSCD 2025年第8期72-100,共29页
Bismuth(Bi)-based catalysts have been gaining recognition as the most promising catalyst materials for the electrochemical CO2reduction reaction(eCO2RR)to produce formate,which provides a potential way to solve ... Bismuth(Bi)-based catalysts have been gaining recognition as the most promising catalyst materials for the electrochemical CO2reduction reaction(eCO2RR)to produce formate,which provides a potential way to solve the energy crisis and the global climate crisis.However,the dynamic structural evolution of catalysts is usually observed during the operando conditions,resulting in the great difficulties for the identification of intrinsic active sites and the revelation of the structure-activity relationship at the atomic scale.This significantly hinders the development of new-type Bi-catalysts with high performance and excellent stability.This review summarizes the new findings and in-depth understanding of dynamic structural evolution for Bi-based catalysts,which are revealed by advanced in/ex situ characterization techniques.Furthermore,the dynamic structural evolution of state-of-the-art Bi-based catalysts is summarized based on the classification of derived active phase structures(e.g.,metallic Bi,Bi-based alloy,and high-valence Bi sites)after reconstruction.Afterward,the surface Bi defect sites and Bi-based interface structure are strongly confirmed as the intrinsic active sites for eCO2RR;moreover,the structure-activity relationship of Bi-based catalysts is deeply discussed based on defect engineering and interface engineering modulation.Finally,the perspectives on the future challenges and opportunities in this emerging field are presented,which facilitate to design next-gap advanced electrocatalyst with high performance for eCO2RR. 展开更多
关键词 CO2electroreduction dynamic structural evolution bismuth-based catalysts active site
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Heteroatom-Doped Bismuth-Based Electrocatalysts for CO2 Reduction to Formic Acid:Advancement and Perspective 认领 引用
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作者 Zhengjie Yao Zhenjie Cheng Jiacheng Wang 《cMat》 2025年第3期48-60,共13页
Electrochemical carbon dioxide reduction reaction(CO2RR)represents an electrochemical process that efficiently converts CO2into value-added products,which hold significant environmental and social importance.Bis... Electrochemical carbon dioxide reduction reaction(CO2RR)represents an electrochemical process that efficiently converts CO2into value-added products,which hold significant environmental and social importance.Bismuth-based catalysts have emerged as the primary focus in electrocatalytic research for CO2conversion into formic acid,owing to their exceptional catalytic performance and selectivity.By strategically doping heterogeneous atoms,the catalytic activity and stability of bismuth-based catalysts can be significantly improved.However,research in this field is still in its infancy,with relatively few comprehensive review articles available.Herein,we present a comprehensive review of the progress in heteroatom-doped bismuth-based catalysts for CO2RR toward formic acid production.Initially,this review outlines the market application prospects of bismuthbased catalysts,the reduction reaction mechanisms,and various modification methods.Furthermore,it systematically summarizes the latest advancements in heteroatom-doped bismuth-based catalysts,including non-metal atom-doped bismuth(such as S,F,and Te)and metal atom-doped bismuth(such as Cu,Co,and Sn).Finally,the review explores the future prospects and challenges associated with the development of heterogeneous atom-doped Bi-based catalysts.This review provides deeper insights into accelerating the technologies of CO2RR to value-added formic acid formation using Bi-based catalysts. 展开更多
关键词 bismuth-based catalysts carbon dioxide reduction formic acid heteroatom doping reaction mechanism
Toward dendrite-free and anti-corrosion Zn anodes by regulating a bismuth-based energizer 认领 引用 被引量：26
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作者 Mingming Wang Yahan Meng +10 位作者 Ke Li Touqeer Ahmad Na Chen Yan Xu Jifei Sun Mingyan Chuai Xinhua Zheng Yuan Yuan Chunyue Shen Ziqi Zhang Wei Chen 《eScience》 2022年第5期509-517,共9页
Aqueous rechargeable zinc metal batteries display high theoretical capacity along with economical effectiveness,environmental benignity and high safety.However,dendritic growth and chemical corrosion at the Zn anodes ... Aqueous rechargeable zinc metal batteries display high theoretical capacity along with economical effectiveness,environmental benignity and high safety.However,dendritic growth and chemical corrosion at the Zn anodes limit their widespread applications.Here,we construct a Zn/Bi electrode via in-situ growth of a Bi-based energizer upon Zn metal surface using a replacement reaction.Experimental and theoretical calculations reveal that the Bi-based energizer composed of metallic Bi and ZnBi alloy contributes to Zn plating/stripping due to strong adsorption energy and fast ion transport rates.The resultant Zn/Bi electrode not only circumvents Zn dendrite growth but also improves Zn anode anti-corrosion performance.Specifically,the corrosion current of the Zn/Bi electrode is reduced by 90%compared to bare Zn.Impressively,an ultra-low overpotential of 12mV and stable cycling for 4000h are achieved in a Zn/Bi symmetric cell.A Zn–Cu/Bi asymmetric cell displays a cycle life of 1000 cycles,with an average Coulombic efficiency as high as 99.6%.In addition,an assembled Zn/Bi-activated carbon hybrid capacitor exhibits a stable life of more than 50,000 cycles,an energy density of 64Wh kg−1,and a power density of 7kWkg−1.The capacity retention rate of a Zn/Bi–MnO2full cell is improved by over 150%compared to a Zn–MnO2cell without the Bi-based energizer.Our findings open a new arena for the industrialization of Zn metal batteries for large-scale energy storage applications. 展开更多
关键词 Aqueous Zn anode Anti-corrosion Replacement reaction Dendrite-free Bismuth-based energizer
Comparative investigation on amplifying performance between 980 nm and 1480 nm pumped bismuth-based EDFA 认领 引用 被引量：2
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作者 周亚训 盖娜 +1 位作者 陈芬 杨高波 《中国激光》 EI CAS 北大核心 2009年第3期558-563,共6页
The population rate and power propagation equations are presented and solved to compare the amplification performances of bismuth-based Er3+-doped fiber amplifier (EDFA) pumped by 980-and 1480-nm lasers,respectively.I... The population rate and power propagation equations are presented and solved to compare the amplification performances of bismuth-based Er3+-doped fiber amplifier (EDFA) pumped by 980-and 1480-nm lasers,respectively.In both single signal and coarse wavelength-division-multiplexing(CWDM)signals inputs,the 1480-nm pumped bismuth-based EDFA provides a larger signal gain than the 980-nm pumped one does,whereas the latter provides a relatively lower noise figure (NF).Comparative results indicate that the 1480-nm pumping scheme is more advantageous for bismuth-based EDFA regarding the band width and gain property. 展开更多
关键词 optical communications amplification performances rate equations power propagation equations bismuth-based EDFA
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Regulating the crystal phase of bismuth-based semiconductors for promoted photocatalytic performance 认领 引用 被引量：3
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作者 Zhaohui Wu Mei-Chi Chong +2 位作者 Shiying Zhang Junshan Li Yongfa Zhu 《Science China Chemistry》 SCIE EI CAS CSCD 2024年第6期1839-1864,共26页
Numerous bismuth-based semiconductors(BBSs)with sophisticated and desirable structures used as photocatalysts for efficient photocatalytic degradation of water organic contaminants have attracted considerable attentio... Numerous bismuth-based semiconductors(BBSs)with sophisticated and desirable structures used as photocatalysts for efficient photocatalytic degradation of water organic contaminants have attracted considerable attention.However,regulating the crystal phases and phase transition of BBSs for promoted photocatalytic performance is ignored.Herein,the unique crystal structure and band structure features of each typical BBSs,and the vital roles on phase controlling of each phase were systematically presented based on the classification of BBSs.Notably,the critical factors for the phase transition of BBSs and intrinsic driving forces endowed by phases of BBSs for enhanced photocatalytic performance of organic contaminants removal were also elucidated.This review will provide systematical guidelines and horizons for regulating the crystal phase and phase transition of BBSs,promoting photocatalytic degradation and mineralization of organic contaminants. 展开更多
关键词 bismuth-based semiconductors phase regulation photocatalytic performances organic contaminants
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Emerging Bismuth-Based Step-Scheme Heterojunction Photocatalysts for Energy and Environmental Applications 认领 引用 被引量：8
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作者 Diejing Feng Xinyu Li +2 位作者 Yanping Liu Xiaobo Chen Shijie Li 《Renewables》 2023年第5期485-513,共29页
Photocatalysis has been expected to be a promising advanced oxidation process to endlessly convert exhaustless solar energy into storable,transportable,and usable chemical energy.As a kind of visible light-response se... Photocatalysis has been expected to be a promising advanced oxidation process to endlessly convert exhaustless solar energy into storable,transportable,and usable chemical energy.As a kind of visible light-response semiconductors,Bi-based semiconductors can be developed into step-scheme(S-scheme)heterojunction photocatalysts,consisting of a reductive photocatalyst(RP)and an oxidative photocatalyst(OP)with band edge bending.This review sums up the state-of-the-art progress in Bi-based S-scheme heterojunctions,as well as the in-/ex-situ experiments and theoretical calculations to uncover the unique heterostructure and charge transfer mechanism of Bi-based S-scheme heterojunctions in depth.We can find that Bi-based S-scheme heterojunction photocatalysts have advantages in impeding the recombination of photo-induced electron-hole pairs,expediting the charge transfer,broadening solar energy utilization,and maximizing the potential energy of photo-redox reaction sites.Additionally,the recently published work on the potential applications of Bi-based S-scheme heterojunctions is also summarized,including photocatalytic H2 production,CO2 reduction with water,pollutant degradation,H2O2 production,and N2 photofixation for ammonia and urea production by comparing and discussing their photocatalytic efficiency.On the basis of research progress,the immediate challenges and future perspectives of Bi-based S-scheme heterojunction photocatalysts are critically debated. 展开更多
关键词 Bismuth-based(Bi-based)semiconductors S-scheme heterojunction internal electric field Fermi level photocatalysis vacancy engineering
Solution-sol-gel-SHS process of quickly synthesizing bismuth-based superconductor precursor powder 认领 引用
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作者 毛传斌 周廉 孙祥云 《Science China(Technological Sciences)》 EI CAS 1996年第6期571-578,共8页
A new process (solution-sol-gel-SHS,SSGS) based on the combination of the advantages of solution-sol-gel (SSG) process and solution self-propagating high-temperature synthesis (SHS) process has been developed to synth... A new process (solution-sol-gel-SHS,SSGS) based on the combination of the advantages of solution-sol-gel (SSG) process and solution self-propagating high-temperature synthesis (SHS) process has been developed to synthesize bismuth-based superconductor precursor powder.The new process consists of two main steps: (i) SSG process is used to prepare homogeneous wet gel;(ii) solution SHS process is carried out to transit wet gel to soft-agglomerated ultrafine (~0.3μm) precursor powder with low carbon content (<400×10-6).The new process has overcome many serious shortcomings of traditional SSG-processed powder such as hard agglomerate,coarse particles and high carbon content,and also greatly shortened the powder preparation period.The powder can be sintered into 110K 2223 superconductor with excellent quality in a short time.The process parameters to obtain homogeneous wet gel are optimized and SSG transition mechanism is also discussed. 展开更多
关键词 solution-sol-gel-SRS bismuth-based superconductor low carbon content powder.
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Regulating the proton supply effect on chlorine-doped bismuth for enhanced electroreduction CO2 to formate 认领 引用 被引量：1
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作者 Xiao Li Chaoqiong Fang +1 位作者 Riming Hu Jiayuan Yu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期611-615,共5页
Electrochemical CO2 reduction reaction(CO2RR) into valuable formate provides a strategy for carbon neutrality.Bismuth(Bi) catalysts,attributed to their appropriate energy barrier of OCHO*intermediate,have demons... Electrochemical CO2 reduction reaction(CO2RR) into valuable formate provides a strategy for carbon neutrality.Bismuth(Bi) catalysts,attributed to their appropriate energy barrier of OCHO*intermediate,have demonstrated substantial potential for the advancement of electrocatalytic CO2 reduction to formate.However,due to the weak bonding of protons(H*) of Bi,the available protonate of CO2 on Bi is insufficient,which limits the formation of OCHO*.Prediction by theoretical calculation,chlorine doping can effectively promote the dissociation of H2O and thus achieve effective proton supply.We prepare chlorine-doped Bi(Cl-Bi) via an electrochemical conversion strategy for electroreduction of CO2 .An obvious improvement of faradaic efficiency(FE) of formate(96.7% at-0.95 V vs.RHE) can be achieved on Cl-Bi,higher than that of Bi(89.4%).Meanwhile,Cl-Bi has the highest formate production rate of 275 μmol h-1cm-2at-0.95 V vs.RHE,which is 1.2 times higher than that of Bi(224 μmol h-1cm-2).In situ characterizations and kinetic analysis reveal that chlorine doping promotes the activation of H2O and supply sufficient protons to promote the protonation of CO2 to OCHO*,which is consistent with theoretical calculation.The study presents an effective strategy for rational design of highly efficient electrocatalysts to promote green chemical production. 展开更多
关键词 CO2electroreduction Heteroatom doping Proton supply effect Reaction kinetics Bismuth-based catalysts
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A high-tap-density,particle-nested-bulk bismuth anode for fast-charging sodium-ion batteries 认领 引用
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作者 Xiaoling Qiu Ruijie Chen +5 位作者 Keren Luo Xiaoran Wang Tuan Wang Pengcheng Shi Wenlong Cai Hao Wu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期431-438,共8页
The application of commercial hard carbon(HC)materials in sodium-ion batteries(SIBs)is limited by their inferior rate capability(<5.0 A/g)and low tap density(<1.0 g/cm3).Alloying-type bismuth(Bi)offers a high... The application of commercial hard carbon(HC)materials in sodium-ion batteries(SIBs)is limited by their inferior rate capability(<5.0 A/g)and low tap density(<1.0 g/cm3).Alloying-type bismuth(Bi)offers a high theoretical volumetric capacity of 3800 mAh/cm3 and superb rate capability but suffers from large volume expansion(~244%)and undesirable structural pulverization.Herein,a hectogram-scale Bi-inlaid carbon skeleton(GC-Bi)composite was synthesized through a facile precipitation-carbonization method using low-cost industrial-grade chemical reagents.The as-prepared GC-Bi composite features a unique particle-nested-bulk architecture,achieving a high tap-density of 3.33 g/cm3,which is approximately 4.16 times greater than that of commercial HC.Besides,the carbon sheath enhances the electronic conductivity and accommodates the substantial volume swelling of the embedded Bi particles,contributing to the formation of a thin and stable solid electrolyte interface on the electrode.Consequently,the GC-Bi anode achieves a high volumetric capacity(1123 mAh/cm3),impressive rate capability(207.8 mAh/g at 80 A/g),together with long cyclability retaining 96.5%of its capacity after 5000 cycles in a Na//GC-Bi half-cell and 78%after 800 cycles in a GC-Bi//Na3V2(PO4)3 full-cell. 展开更多
关键词 Scalable synthesize Tap density High-rate capability Bismuth-based anode Sodium-ion batteries
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Recent Advances in Regulation Strategy and Catalytic Mechanism of Bi-Based Catalysts for CO2 Reduction Reaction 认领 引用
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作者 Jianglong Liu Yunpeng Liu +5 位作者 Shunzheng Zhao Baotong Chen Guang Mo Zhongjun Chen Yuechang Wei Zhonghua Wu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第1期647-697,共51页
Using photoelectrocatalytic CO2 reduction reaction(CO2RR)to produce valuable fuels is a fascinating way to alleviate environmental issues and energy crises.Bismuth-based(Bi-based)catalysts have attracted widespr... Using photoelectrocatalytic CO2 reduction reaction(CO2RR)to produce valuable fuels is a fascinating way to alleviate environmental issues and energy crises.Bismuth-based(Bi-based)catalysts have attracted widespread attention for CO2RR due to their high catalytic activity,selectivity,excellent stability,and low cost.However,they still need to be further improved to meet the needs of industrial applications.This review article comprehensively summarizes the recent advances in regulation strategies of Bi-based catalysts and can be divided into six categories:(1)defect engineering,(2)atomic doping engineering,(3)organic framework engineering,(4)inorganic heterojunction engineering,(5)crystal face engineering,and(6)alloying and polarization engineering.Meanwhile,the corresponding catalytic mechanisms of each regulation strategy will also be discussed in detail,aiming to enable researchers to understand the structure-property relationship of the improved Bibased catalysts fundamentally.Finally,the challenges and future opportunities of the Bi-based catalysts in the photoelectrocatalytic CO2RR application field will also be featured from the perspectives of the(1)combination or synergy of multiple regulatory strategies,(2)revealing formation mechanism and realizing controllable synthesis,and(3)in situ multiscale investigation of activation pathways and uncovering the catalytic mechanisms.On the one hand,through the comparative analysis and mechanism explanation of the six major regulatory strategies,a multidimensional knowledge framework of the structure-activity relationship of Bi-based catalysts can be constructed for researchers,which not only deepens the atomic-level understanding of catalytic active sites,charge transport paths,and the adsorption behavior of intermediate products,but also provides theoretical guiding principles for the controllable design of new catalysts;on the other hand,the promising collaborative regulation strategies,controllable synthetic paths,and the in situ multiscale characterization techniques presented in this work provides a paradigm reference for shortening the research and development cycle of high-performance catalysts,conducive to facilitating the transition of photoelectrocatalytic CO2RR technology from the laboratory routes to industrial application. 展开更多
关键词 Bismuth-based catalysts CO2reduction reaction Regulation strategy Catalytic mechanism Review
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Dual atom-bridge effect promoting interfacial charge transfer in 2D/2D Cs3Bi2Br9/BiOBr epitaxial heterojunction for efficient photocatalysis 认领 引用
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作者 Yuan Teng Zichun Zhou +3 位作者 Jinghua Chen Siying Huang Hongyan Chen Daibin Kuang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第2期190-195,共6页
Optimizing the interfacial quality of halide perovskites heterojunction to promote the photogenerated charge separation is of great significance in photocatalytic reactions.However,the delicately regulation of interfa... Optimizing the interfacial quality of halide perovskites heterojunction to promote the photogenerated charge separation is of great significance in photocatalytic reactions.However,the delicately regulation of interfacial structure and properties of halide perovskites hybrid is still a big challenge owing to the growth uncontrollability and incompatibility between different constituents.Here we use Bi OBr nanosheets as the start-template to in situ epitaxially grow Cs3Bi2Br9nanosheets by“cosharing”Bi and Br atoms strategy for designing a 2D/2D Cs3Bi2Br9/BiOBr heterojunction.Systematic studies show that the epitaxial heterojunction can optimize the synergistic effect of Bi OBr and Cs3Bi2Br9via the formation of tight-contact interfaces,strong interfacial electronic coupling and charge redistribution,which can not only drive the Z-scheme charge transfer mechanism to greatly promote the spatial separation of electronhole pairs,but also modulate the interfacial electronic structure to facilitate the adsorption and activation of toluene molecules.The heterojunction exhibited 62.3 and 2.4-fold photoactivity improvement for toluene oxidation to benzaldehyde than parental Bi OBr and Cs3Bi2Br9,respectively.This study not only proposed a novel dual atom-bridge protocol to engineer high-quality perovskite heterojunctions,but also uncovered the potential of heterojunction in promoting electron-hole separation as well as the application in photocatalytic organic synthesis. 展开更多
关键词 Bismuth-based perovskite Bismuth oxyhalide Direct Z-scheme heterojunction Dual atom-bridge effect Photocatalytic C(sp3)-H bond activation
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