Transforming crystal structures of cobalt molybdate to generate electron-rich sites for electrochemical detection of Pb(II)
文献类型：期刊论文
| 作者 | Liu, Yang-Zhi1,2,3; Cai, Xin; Huang, Cong-Cong2,3; Liu, Zi-Hao2,3; Yang, Yuan-Fan3; Li, Yong-Yu2; Yang, Meng2,3; Chen, Shi-Hua1,2; Huang, Xing-Jiu1,2,3
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| 刊名 | ANALYTICA CHIMICA ACTA
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| 出版日期 | 2024-07-25 |
| 卷号 | 1314 |
| 关键词 | CoMoO 4 Crystal structures transformation Valance cycles Electron transfer Electrocatalytic performance |
| ISSN号 | 0003-2670 |
| DOI | 10.1016/j.aca.2024.342801 |
| 通讯作者 | Yang, Meng(myang@iim.ac.cn) ; Chen, Shi-Hua(chenshh@issp.ac.cn) ; Huang, Xing-Jiu(xingjiuhuang@iim.ac.cn) |
| 英文摘要 | Background: Most of the investigations on distinct crystal structures of catalysts are individually focused on the difference of surface functional groups or adsorption properties, but rarely explore the changes of active sites to affect the electrocatalytic performance. Catalysts with diverse crystal structures had been applied to modified electrodes in different electrocatalytic reactions. However, there is currently a lack of an essential understanding for the role of real active sites in catalysts with crystalline structures in electroanalysis, which is crucial for designing highly sensitive sensing interfaces. Results: Herein, cobalt molybdate with divergent crystal structures (alpha-CoMoO4 and beta-CoMoO4) were synthesized by adjusting the calcination temperature, indicating that alpha-CoMoO4 (800 degrees C) (60.00 mu A mu M 1) had the highest catalytic ability than beta-CoMoO4 (700 degrees C) (38.68 mu A mu M-1) and alpha-CoMoO4 (900 degrees C) (29.55 mu A mu M-1) for the catalysis of Pb(II). It was proved that the proportion of Co(II) and Mo(IV) as electron-rich sites in alpha-CoMoO4 (800 degrees C) were higher than beta-CoMoO4 (700 degrees C) and alpha-CoMoO4 (900 degrees C), possessing more electrons to participate in the valence cycles of Co(II)/Co(III) and Mo(IV)/Mo(VI) to boost the catalytic reduction of Pb(II). Specifically, Co(II) transferred a part of electrons to Mo(VI), promoting the formation of Mo(IV). Co(II) and Mo(IV), as the electron-rich sites, providing electrons to Pb(II), further accelerating the conversion of Pb(II) into Pb(0). Significance: In the process of detecting Pb(II), the CoMoO4 structures under different temperatures have distinct content of electron-rich sites Co(II) and Mo(IV). alpha-CoMoO4 (800 degrees C), with the highest content are benefited to detect Pb(II). This work is conducive to understanding the effect of the changes of active sites resulting from crystal transformation on the electrocatalytic performance, and provides a way to construct sensitive electrochemical interfaces of distinct active sites. |
| WOS关键词 | SELECTIVE DETECTION ; EVOLUTION REACTION ; CARBON NANOTUBES ; OXYGEN EVOLUTION ; LEAD(II) ; IONS ; CO ; CATALYSTS ; BEHAVIOR ; FACILE |
| 资助项目 | National Key R&D Program of China[2021YFB3201400] ; Open Research Project of State Key Laboratory of Transducer Technology[SKT2202] ; China Postdoctoral Science Foundation[2022M723188] ; Anhui Provincial Natural Science Foundation[2308085QB70] ; Youth Innovation Promotion Association of CAS[2023469] ; National Natural Science Foundation of China[22204166] ; National Natural Science Foundation of China[22306186] ; Postdoctoral researcher funding project of Anhui Province[2021B528] ; HFIPS Director's Fund[YZJJ202102] ; HFIPS Director's Fund[2022YZGH05] ; HFIPS Director's Fund[YZJJ-GGZX-2022-01] ; HFIPS Director's Fund[YZJJ2023QN33] ; Collaborative Innovation Program of Hefei Science Center, CAS[2022HSC-CIP004] ; Horizontal Cooperation Project of Fuyang Municipal Government-Fuyang Normal University[SXHZ202102] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001249475500001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R&D Program of China ; Open Research Project of State Key Laboratory of Transducer Technology ; China Postdoctoral Science Foundation ; Anhui Provincial Natural Science Foundation ; Youth Innovation Promotion Association of CAS ; National Natural Science Foundation of China ; Postdoctoral researcher funding project of Anhui Province ; HFIPS Director's Fund ; Collaborative Innovation Program of Hefei Science Center, CAS ; Horizontal Cooperation Project of Fuyang Municipal Government-Fuyang Normal University |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/136514]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yang, Meng; Chen, Shi-Hua; Huang, Xing-Jiu |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Environm Opt & Technol, HFIPS, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yang-Zhi,Cai, Xin,Huang, Cong-Cong,et al. Transforming crystal structures of cobalt molybdate to generate electron-rich sites for electrochemical detection of Pb(II)[J]. ANALYTICA CHIMICA ACTA,2024,1314. |
| APA | Liu, Yang-Zhi.,Cai, Xin.,Huang, Cong-Cong.,Liu, Zi-Hao.,Yang, Yuan-Fan.,...&Huang, Xing-Jiu.(2024).Transforming crystal structures of cobalt molybdate to generate electron-rich sites for electrochemical detection of Pb(II).ANALYTICA CHIMICA ACTA,1314. |
| MLA | Liu, Yang-Zhi,et al."Transforming crystal structures of cobalt molybdate to generate electron-rich sites for electrochemical detection of Pb(II)".ANALYTICA CHIMICA ACTA 1314(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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