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author：

Duan, X. (Duan, X..) [1] | Xu, J. (Xu, J..) [2] | Cong, Y. (Cong, Y..) [3] | Geng, H. (Geng, H..) [4] | Chen, K. (Chen, K..) [5] | Xu, T. (Xu, T..) [6] | Zhang, Y. (Zhang, Y..) [7] | Zhang, F. (Zhang, F..) [8] | Zhu, J. (Zhu, J..) [9] | Zhang, L. (Zhang, L..) [10] | Zhao, W. (Zhao, W..) [11] | Sun, Y. (Sun, Y..) [12] | Xiong, H. (Xiong, H..) [13]

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Scopus

Abstract：

The　electrochemical　reduction　of　CO2　to　formate　is　an　effective　approach　to　achieving　carbon　neutrality.　However,　the　instability　of　catalyst　remains　a　significant　limitation.　Doping　heteroatoms　is　a　recognized　method　for　tuning　the　coordination　environment　to　enhance　both　electrochemical　performance　and　stability.　Herein,　we　report　a　facile　and　mild　hydrothermal　method　employing　sulfur　doping　to　tune　the　coordination　environment　of　bismuth　active　sites.　Sulfur　doping　modifies　the　coordination　environment　of　active　sites　by　partially　substituting　O　atoms　bonded　with　bismuth　active　sites　and　simultaneously　creating　an　abundance　of　oxygen　vacancies,　which　effectively　stabilize　the　active　sites.　This　results　in　notably　improved　stability,　reaching　110　h　with　a　significant　FEHCOOH　(around　100　%).　The　bismuth-based　catalyst　modified　with　sulfur　exhibits　an　impressive　FEHCOOH　over　95　%　across　a　wide　applied　potential　range　of　−0.7　to　−1.4　VRHE.　The　flower-like　structure　increases　the　electrochemical　surface　area,　promoting　greater　exposure　of　bismuth　active　sites.　This　leads　to　a　high　formate　production　rate　of　1248　mmol∙h-1∙cm-2　for　the　Cu-BiS　catalyst,　which　is　1.7　times　that　of　the　Cu-Bi　catalyst.　This　strategy　provides　an　effective　way　to　tune　the　coordination　environment　of　active　sites　and　stabilize　them.　©　2024　Elsevier　B.V.

Keyword：

Coordination environment Electroreduction Oxygen vacancy Sulfur doping

Community：

  • [ 1 ] [Duan X.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 2 ] [Duan X.]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province, Xiamen, 361102, China
  • [ 3 ] [Xu J.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 4 ] [Xu J.]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province, Xiamen, 361102, China
  • [ 5 ] [Cong Y.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 6 ] [Cong Y.]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province, Xiamen, 361102, China
  • [ 7 ] [Geng H.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 8 ] [Chen K.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 9 ] [Chen K.]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province, Xiamen, 361102, China
  • [ 10 ] [Xu T.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 11 ] [Xu T.]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province, Xiamen, 361102, China
  • [ 12 ] [Zhang Y.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 13 ] [Zhang F.]Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
  • [ 14 ] [Zhang F.]Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, 13346, NY, United States
  • [ 15 ] [Zhu J.]Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
  • [ 16 ] [Zhang L.]Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
  • [ 17 ] [Zhao W.]Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
  • [ 18 ] [Sun Y.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 19 ] [Sun Y.]Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
  • [ 20 ] [Sun Y.]Shenzhen Research Institute of Xiamen University, Shenzhen, 518057, China
  • [ 21 ] [Xiong H.]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
  • [ 22 ] [Xiong H.]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province, Xiamen, 361102, China
  • [ 23 ] [Xiong H.]College of Energy, Xiamen University, Xiamen, 361102, China

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Source ：

Chemical Engineering Journal

ISSN： 1385-8947

Year： 2024

Volume： 501

1 3 . 4 0 0

JCR@2023

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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