@article{Liu2023, 
author = {Wenhui Liu and Lingtong Ding and Minmin Liu and Xiao Wang and Zhengrong Zhang and Tian-Wen Jiang and Shengjuan Huo and Wen-Bin Cai},
title = {Unraveling the interfacial effect of PdBi bimetallic catalysts on promoting CO2 electroreduction to formate},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {8},
pages = {10822-10831},
keywords = {carbon dioxide reduction reaction, bimetallic PdBi, interface engineering, formate, in-situ attenuated total reflection surface enhanced infrared absorption spectroscopy (ATR-SEIRAS)},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5829-1},
doi = {10.1007/s12274-023-5829-1},
abstract = {Through interface engineering and content control strategy, a PdBi bimetallic interface structure was constructed for the first time to selectively convert CO2 to formate with a remarkably high Faraday efficiency (FEformate) of 94% and a partial current density (jformate) of 34 mA·cm−2 at −0.8 V vs. reversible hydrogen electrode (RHE) in an H-cell. Moreover, the PdBi interface electrocatalyst even exhibited a high current density of 180 mA·cm−2 with formate selectivity up to 92% in a flow cell and could steadily operate for at least 20 h. Electrochemical in-situ attenuated total reflection surface enhanced infrared absorption spectroscopy (ATR-SEIRAS) confirmed that the PdBi interface could greatly weaken the adsorption of *CO intermediates due to electronic and geometric effects. Density functional theory (DFT) calculations also established that the PdBi interface regulated the CO2-to-formate pathway by reducing the energy barrier toward HCOOH and largely weakening the adsorption of *CO intermediates on the catalyst surface. This study reveals that the unique PdBi bimetallic interface can provide a novel platform to study the reaction mechanism through combining in-situ ATR-SEIRAS and DFT calculations.}
}