Achieving high selectivity towards electro-conversion of CO2 using In-doped Bi derived from metal-organic frameworks

Yayu Guan; Xurui Zhang; Yanxing Zhang; Tolga N V Karsili; Mengyang Fan; Yuyu Liu; Barbara Marchetti; Xiao-Dong Zhou

doi:10.1016/j.jcis.2021.12.174

Achieving high selectivity towards electro-conversion of CO₂ using In-doped Bi derived from metal-organic frameworks

J Colloid Interface Sci. 2022 Apr 15:612:235-245. doi: 10.1016/j.jcis.2021.12.174. Epub 2021 Dec 29.

Authors

Yayu Guan¹, Xurui Zhang¹, Yanxing Zhang², Tolga N V Karsili³, Mengyang Fan⁴, Yuyu Liu⁵, Barbara Marchetti³, Xiao-Dong Zhou³

Affiliations

¹ Institute of Sustainable Energy, Shanghai University, Shanghai 200444, China.
² School of Physics, Henan Normal University, Xinxiang, Henan 453007, China.
³ Institute for Materials Research and Innovation, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
⁴ Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada. Electronic address: my.fan@utoronto.ca.
⁵ Institute of Sustainable Energy, Shanghai University, Shanghai 200444, China. Electronic address: liuyuyu@shu.edu.cn.

PMID: 34998187
DOI: 10.1016/j.jcis.2021.12.174

Abstract

Metal-organic frameworks (MOFs) and their derivatives have shown great potential as electrocatalysts, in virtue of their ease of functionalization and abundance of active sites. Here, we report a series of indium-doped bismuth MOF-derived composites (BiIn_X-Y@C) for the direct conversion of carbon dioxide (CO₂) to hydrocarbon derivatives. Amongst the catalysts studied, BiIn₅-500@C demonstrated high selectivity for the production of formate and intrinsic activity in a wide potential window, ranging from - 1.16 to - 0.76 V vs. RHE (V_RHE). At - 0.86 V_RHE, the Faradaic efficiency and total current density were determined as 97.5% and - 13.5 mA cm^-2, respectively. In addition, a 15-h stability test shows no obvious signs of deactivation. Complementary density functional theory (DFT) calculations revealed that the In-doped Bi₂O₃ are the predominant active centers for HCOOH production in the reduction of CO₂ under the action of the BiIn_X-Y@C catalyst. This work provides new detailed insights into reaction mechanism, and selectivity for reduction of CO₂via MOFs, which are expected to inspire and guide the design of novel, selective and efficient catalysts.

Keywords: Bismuth MOF; CO(2) Reduction; Electrocatalysis; Indium; Surface Decoration.