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

被引：141
|
作者：
Sun, Zhaoli [1 ]
Yang, Xiaolong [1 ]
Yu, Xue-Fang [2 ]
Xia, Linhong [1 ]
Peng, Yanhua [1 ]
Li, Zhuo [1 ]
Zhang, Yan [1 ]
Cheng, Jianbo [2 ]
Zhang, Kaisheng [3 ]
Yu, Jianqiang [1 ]
机构：
[1] Qingdao Univ, Coll Chem & Chem Engn, 308 Ning Xia Rd, Qingdao 266071, Peoples R China
[2] Yantai Univ, Sch Chem & Chem Engn, Lab Theoret & Computat Chem, 32 Qingquan Rd, Yantai 264005, Peoples R China
[3] Chinese Acad Sci, HFIPS, Inst Solid State Phys, Environm Mat & Pollut Control Lab, Hefei 230031, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2021年 / 285卷
基金：
中国国家自然科学基金;
关键词：
Surface oxygen vacancies; Electron bridge; Pd; Bi(2)MoO(6)selective oxidation; TOTAL-ENERGY CALCULATIONS; VISIBLE-LIGHT; ULTRATHIN NANOSHEETS; NANOPARTICLES; WATER; HETEROSTRUCTURE; TIO2; PD;
D O I：
10.1016/j.apcatb.2020.119790
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
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页数：12
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