Solid-state synthesis of Cu nanoparticles embedded in carbon substrate for efficient electrochemical reduction of carbon dioxide to formic acid

Fangqi Yang, Chang Jiang, Mingfeng Ma, Fenghao Shu, Xinyu Mao, Weikang Yu, Jun Wang, Zheling Zeng, Shuguang Deng

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number125879
JournalChemical Engineering Journal
Volume400
DOIs
StatePublished - Nov 15 2020

Keywords

  • CO electrochemical reduction
  • Cu-based electrocatalyst
  • DFT calculation
  • HCOOH production
  • Mechanical ball-milling

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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