PdMo Bimetallene Coupled with MXene Nanosheets as Efficient Bifunctional Electrocatalysts for Formic Acid and Methanol Oxidation Reactions

Cuizhen Yang; Tingyao Wang; Chengcheng Li; Haiyan He; Dongming Liu; Huajie Huang

doi:10.1021/acsami.3c10789

PdMo Bimetallene Coupled with MXene Nanosheets as Efficient Bifunctional Electrocatalysts for Formic Acid and Methanol Oxidation Reactions

ACS Appl Mater Interfaces. 2023 Oct 25;15(42):49195-49203. doi: 10.1021/acsami.3c10789. Epub 2023 Oct 16.

Authors

Cuizhen Yang¹, Tingyao Wang¹, Chengcheng Li¹, Haiyan He², Dongming Liu¹, Huajie Huang²

Affiliations

¹ School of Materials Science and Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China.
² College of Mechanics and Materials, Hohai University, Nanjing 210098, China.

PMID: 37843990
DOI: 10.1021/acsami.3c10789

Abstract

In this study, we demonstrate a facile soft chemistry strategy for the in situ growth of two-dimensional (2D) ultrathin PdMo bimetallene tightly coupled with Ti₃C₂T_x MXene nanosheets (PdMo/Ti₃C₂T_x) using a robust stereoassembly process. The 2D PdMo bimetallene offers numerous unsaturated Pd atoms and simultaneously induces combined bimetallic alloy and strain effects, while the Ti₃C₂T_x matrix effectively optimizes the electronic structure of PdMo bimetallene via a face-to-face interface interaction and guarantees exceptional electrical conductivity. As a consequence, the newly designed PdMo/Ti₃C₂T_x nanoarchitecture expresses remarkable electrocatalytic properties for the formic acid and methanol electro-oxidation, in terms of large electrochemically active surface areas, ultrahigh catalytic activity, strong antipoisoning ability, and dependable long-term stability, all of which are better than those of conventional Pd nanoparticle catalysts supported by Ti₃C₂T_x and carbon matrices.

Keywords: PdMo bimetallene; Ti3C2Tx MXene; electrocatalysts; formic acid oxidation; methanol oxidation.