TY - JOUR
T1 - Solid-state synthesis of Cu nanoparticles embedded in carbon substrate for efficient electrochemical reduction of carbon dioxide to formic acid
AU - Yang, Fangqi
AU - Jiang, Chang
AU - Ma, Mingfeng
AU - Shu, Fenghao
AU - Mao, Xinyu
AU - Yu, Weikang
AU - Wang, Jun
AU - Zeng, Zheling
AU - Deng, Shuguang
N1 - Funding Information:
This research work was supported by the National Natural Science Foundation of China (No. 51672186 and 21908090 ) and Natural Science Foundation of Jiangxi Province (No. 20192ACB21015 ).
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11/15
Y1 - 2020/11/15
N2 - Electrochemical reduction of CO2 into formic acid (HCOOH) is an appealing approach to mitigate the CO2 emission problem and achieve a carbon-neutral cycle but remains a challenge. Herein, we present a novel strategy to prepare Cu nanoparticles embedded in carbon substrate (Cu NPs@C) as efficient CO2 reduction reaction electrocatalysts for highly selective HCOOH production. The uniformly distributed Cu nanoparticles are responsible for the high faradaic efficiency of HCOOH of 78% at −1.0 V (RHE) and yield of 82.8 μmol h−1 cm−2 at −1.2 V (RHE). Moreover, the detailed density functional theory (DFT) calculations have demonstrated that the high activity and selectivity for HCOOH production was attributed to the synergy effects of exposed Cu (111) facets and carbon substrate. The charges transferred from Cu induces a charge-rich environment on the carbon surface, which enhances the *OCHO adsorption and boosts the HCOOH formation. This work paves a new way to synthesize novel Cu-based electrocatalysts for efficient production of HCOOH.
AB - Electrochemical reduction of CO2 into formic acid (HCOOH) is an appealing approach to mitigate the CO2 emission problem and achieve a carbon-neutral cycle but remains a challenge. Herein, we present a novel strategy to prepare Cu nanoparticles embedded in carbon substrate (Cu NPs@C) as efficient CO2 reduction reaction electrocatalysts for highly selective HCOOH production. The uniformly distributed Cu nanoparticles are responsible for the high faradaic efficiency of HCOOH of 78% at −1.0 V (RHE) and yield of 82.8 μmol h−1 cm−2 at −1.2 V (RHE). Moreover, the detailed density functional theory (DFT) calculations have demonstrated that the high activity and selectivity for HCOOH production was attributed to the synergy effects of exposed Cu (111) facets and carbon substrate. The charges transferred from Cu induces a charge-rich environment on the carbon surface, which enhances the *OCHO adsorption and boosts the HCOOH formation. This work paves a new way to synthesize novel Cu-based electrocatalysts for efficient production of HCOOH.
KW - CO electrochemical reduction
KW - Cu-based electrocatalyst
KW - DFT calculation
KW - HCOOH production
KW - Mechanical ball-milling
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U2 - 10.1016/j.cej.2020.125879
DO - 10.1016/j.cej.2020.125879
M3 - Article
AN - SCOPUS:85086674017
VL - 400
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 125879
ER -