文献类型：期刊文献

英文题名：Effect of MoO3 on Pd nanoparticles for efficient formic acid electrooxidation

作者：Jin, Jiayu[1];Hu, Shuozhen[1];Zhang, Xinsheng[1];Sun, Shigang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

年份：2023

卷号：48

期号：41

起止页码：15483

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20230613559202);WOS:【SCI-EXPANDED(收录号:WOS:000987849600001)】；

基金：This work is financially supported by the National Natural Science Foundation of China (Project 22005097) . The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Formic acid electro-oxidation; Palladium; Molybdenum trioxide; Hydrogen spillover effect; Pd-Mo structure

摘要：Palladium is a promising formic acid electro-oxidation (FAO) catalyst due to its higher initial activity than platinum. However, suffering from the adsorption of hydrogen and CO-like species, the activity and stability of Pd are still unsatisfied. Herein, palladium nano-particles deposited on carbon supported molybdenum trioxide (Pd-MoO3/C) is prepared with MoO3 as the promoter for FAO. X-ray photoelectron spectroscopy analysis proves the close contact between Pd and MoO3, which generates the hydrogen spillover effect and forms the Pd-Mo structure. The hydrogen spillover effect enhances the desorption of hydrogen from Pd and facilitates the FAO activity. Both the spillover effect and Pd-Mo structure contribute to the removal of COad and facilitate the durability and anti-CO poisoning ability of the catalyst. With the optimized ratio of MoO3 to carbon black, the Pd-MoO3/C-20 catalyst owns the best specific activity of 5.86 mA cm-2, which is 1.86 times of Pd/C.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.