结构化学2024，Vol.43Issue(8) ：48-56.DOI:10.1016/j.cjsc.2024.100359

Electron-rich Ni2+in Ni3S2 boosting electrocatalytic CO2 reduction to formate and syngas

Maomao Liu Guizeng Liang Ningce Zhang Tao Li Lipeng Diao Ping Lu Xiaoliang Zhao Daohao Li Dongjiang Yang
结构化学2024，Vol.43Issue(8) ：48-56.DOI:10.1016/j.cjsc.2024.100359
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Electron-rich Ni2+in Ni3S2 boosting electrocatalytic CO2 reduction to formate and syngas

Maomao Liu 1Guizeng Liang 1Ningce Zhang 1Tao Li 1Lipeng Diao 1Ping Lu 1Xiaoliang Zhao 1Daohao Li 1Dongjiang Yang2
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作者信息

  • 1. State Key Laboratory of Bio-fibers and Eco-textiles,School of Environmental Science and Engineering,College of Materials Science and Engineering Qingdao University,Qingdao,266071,PR China
  • 2. State Key Laboratory of Bio-fibers and Eco-textiles,School of Environmental Science and Engineering,College of Materials Science and Engineering Qingdao University,Qingdao,266071,PR China;Institute of Micro/Nano Materials and Devices,Ningbo University of Technology,Ningbo,Zhejiang,315211,PR China
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Abstract

Rationally constructed new catalyst can promote carbon dioxide reduction reaction(CO2RR)to valuable carbo-naceous fuels such as formate and CO,providing a promising strategy for low CO2 emissions.Herein,the syn-thesized Ni3S2@C as a highly efficient electro-catalyst exhibits remarkable selectivity for formate with 73.9％faradaic efficiency(FE)at-0.7 V vs.RHE.At high applied potential,it shows a high syngas evolution with CO/H2 ratios(0.54-3.15)that are suitable for typical downstream thermochemical reactions.The experimental and theoretical analyses demonstrate that the electron-rich Ni2+in Ni3S2 enhances the adsorption behavior of*OCHO intermediate,reduces the energy barrier of the formation of intermediates,and improves the selectivity of the formate product.Attenuated total reflection surface-enhanced infrared absorption spectra conducted in situ show that*OCHO intermediate is more likely to be generated and adsorbed on Ni3S2,enhancing the selectivity and activity of the formate product.

Key words

Carbon dioxide reduction/Electron-rich Ni2+/High selectivity/Formate/*OCHO intermediate

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基金项目

This work acknowledges the National Natural Science Foundation of China(52302272)

This work acknowledges the National Natural Science Foundation of China(22376110)

Taishan Scholars Program(tsqn202211124)

Natural Science Foundation of Shandong Province(ZR2022QB023)

Qingchuang Talents Induction Program of Shandong Higher Education Institution(Research and Innovation Team of Marine Polysac()

State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University(ZKT10)

State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University(GZRC202006)

State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University(ZFZ201809)

State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University(ZDKT202105)

出版年

2024
结构化学
中国化学会 中国科学院福建物质结构研究所

结构化学

CSCD
影响因子：0.44
ISSN：0254-5861
参考文献量54
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