Issue 1, 2023

Creating an electron-rich region on ultrafine Bi2O3 nanoparticles to boost the electrochemical carbon dioxide reduction to formate

Abstract

Various metal–support composites have been reported for the electrochemical CO2 reduction reaction (ECRR), while the effect of synergy between the size effect and interface regulation on ECRR performance is still rarely explored. Herein, we report ultrafine Bi2O3 nanoparticles (∼1.9 nm) decorated on a nitrogen-vacancy-rich graphitic carbon nitride (Bi2O3/NV-C3N4) electrocatalyst for highly efficient ECRR to formate. The Bi2O3/NV-C3N4 electrocatalyst can achieve 95% formate selectivity at −0.9 V vs. RHE and 24 h long-term stability. Moreover, substantial formate selectivity (>80%) was gained over a wide potential range of more than 700 mV. The excellent performance was attributed to the electron transfer from NVs to Bi2O3, forming an electron-rich region on Bi2O3 and accelerating the electron transfer from Bi2O3 to the adsorbed intermediates. This work provides a strategy for enhancing the catalytic activity of bismuth oxides to achieve a high efficiency for CO2 reduction to generate liquid products.

Graphical abstract: Creating an electron-rich region on ultrafine Bi2O3 nanoparticles to boost the electrochemical carbon dioxide reduction to formate

Supplementary files

Article information

Article type
Paper
Submitted
16 9月 2022
Accepted
22 11月 2022
First published
22 11月 2022

Sustainable Energy Fuels, 2023,7, 106-111

Creating an electron-rich region on ultrafine Bi2O3 nanoparticles to boost the electrochemical carbon dioxide reduction to formate

J. Zhan, L. Zhang, X. Wang, Y. Hu, Y. Jiang and F. Yu, Sustainable Energy Fuels, 2023, 7, 106 DOI: 10.1039/D2SE01274J

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