Surface oxygen vacancies of Pd/Bi2MoO6-x acts as “Electron Bridge” to promote photocatalytic selective oxidation of alcohol

By Zhaoli Sun, Xiaolong Yang, Xue-fang Yu, Linhong Xia, Yanhua Peng, Zhuo Li, Yan Zhang, Jian-Bo Cheng, Kaisheng Zhang, Jianqiang Yu. 2021

146 citations recorded by the source corpus.

Abstract The recombination of photogenerated carriers seriously restricts their utilization efficiency in photocatalysis. Herein, surface oxygen vacancies (SOVs) were constructed in Pd-Bi2MoO6 interface to bridge ultra-low loading Pd cluster and Bi2MoO6 semiconductor (Pd/BMO-SOVs). It was found SOVs in Pd/Bi2MoO6-x serve as “Electron Bridge” to bridge ultra-low loading Pd cluster and Bi2MoO6-x, thus tremendously enhance utilization efficiency of photoexcited carriers and ultra-low loading Pd active sites for blue LED driven selective oxidation reaction. The Pd(0.05)/Bi2MoO6-SOVs exhibited 57.8 % conversion for selection oxidation of benzyl which are 6.5, 3.3 and 2.1 times higher than pristine Bi2MoO6, Bi2MoO6-x and Pd(0.05)/Bi2MoO6. Combined with theoretical calculations, SOVs was proposed as “Electron Bridge” to transfer photogenerated electrons from Bi2MoO6-x to ultra-low loading Pd clusters, thus greatly boosting separation and utilization efficiency of photogenerated electron-hole pairs.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/de07c893be207c0cf037ca0521a70eedc28f57c6