Ru Nanoparticles Supported on Oxygen-Deficient 3DOM BiVO4: High-Performance Catalysts for the Visible-Light-Driven Selective Oxidation of Benzyl Alcohol

被引：10
作者：
Zhang, Kunfeng [1 ,2 ]
Liu, Yuxi [1 ,2 ]
Deng, Jiguang [1 ,2 ]
Jing, Lin [1 ,2 ]
Pei, Wenbo [1 ,2 ]
Han, Zhuo [1 ,2 ]
Zhang, Xing [1 ,2 ]
Dai, Hongxing [1 ,2 ]
机构：
[1] Beijing Univ Technol, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat,Educ Minist China, Beijing 100124, Peoples R China
[2] Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
来源：
CHEMCATCHEM | 2019年 / 11卷 / 24期
关键词：
Three-dimensionally ordered macroporous bismuth vanadate; Ru nanoparticle; photocatalytic benzyl alcohol selective oxidation; oxygen vacancy; photocatalytic mechanism; PHOTOCATALYTIC OXIDATION; QUANTUM DOTS; ULTRATHIN NANOSHEETS; AEROBIC OXIDATION; ELECTRON-TRANSFER; MONOCLINIC BIVO4; EFFICIENT; TIO2; VACANCIES; PLASMON;
D O I：
10.1002/cctc.201901540
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：
Developing novel photocatalysts for green synthesis of important organic intermediates under mild conditions is of great significance in industry. In this work, we synthesized the oxygen-deficient three-dimensionally ordered macroporous (3DOM) BiVO4-supported nanosized Ru (xRu/3DOM BiVO4, x=0.24-2.16 wt %) catalysts by the polymethyl methacrylate-templating, ethylene glycol reduction, and post-thermal treatment methods. Physicochemical properties of the materials were characterized using the various techniques, and their catalytic activities for the visible-light-driven selective oxidation of benzyl alcohol to benzaldehyde were measured. It is found that the Ru nanoparticles (NPs) with a size of 1.2-1.5 nm were uniformly dispersed on the surface of 3DOM BiVO4, which gave rise to a significant enhancement in photocatalytic activity. Benzyl alcohol conversion first went up and then dropped down with the rise in loading of Ru NPs. The 0.95Ru/3DOM BiVO4-Ar-300 sample was thermally treated in an Ar flow at 300 degrees C for 4 h showed the highest benzyl alcohol conversion (78 %) with a benzaldehyde selectivity of 100 % (benzaldehyde formation rate was 1380 mu mol/(g h) after 6 h of illumination) and good photocatalytic stability. The high dispersion of Ru NPs and formation of oxygen vacancies in 3DOM BiVO4 improved separation and transfer efficiency of the photogenerated electrons/holes and increased the superoxide radical concentration. In addition, the possible mechanism of benzyl alcohol oxidation over 0.95Ru/3DOM BiVO4-Ar-300 was also discussed. The oxygen-deficient 3DOM BiVO4-supported Ru NPs have promising applications for selective oxidation of organics.
引用
收藏
页码：6398 / 6407
页数：10
相关论文
共 55 条
[1]   Designing conjugated microporous polymers for visible light-promoted photocatalytic carbon-carbon double bond cleavage in aqueous medium [J].
Ayed, Cyrine ;
da Silva, Lucas Caire ;
Wang, Di ;
Zhang, Kai A. I. .
JOURNAL OF MATERIALS CHEMISTRY A, 2018, 6 (44) :22145-22151
[2]   Hollow spherical RuO2@TiO2@Pt bifunctional photocatalyst for coupled H2 production and pollutant degradation [J].
Cao, Bing ;
Li, Guisheng ;
Li, Hexing .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 194 :42-49
[3]   Heterogeneous photocatalysis for selective oxidation of alcohols and hydrocarbons [J].
Chen, Lang ;
Tang, Jie ;
Song, Lu-Na ;
Chen, Peng ;
He, Jie ;
Au, Chak-Tong ;
Yin, Shuang-Feng .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 242 :379-388
[4]   A honeycomb multilevel structure Bi2O3 with highly efficient catalytic activity driven by bias voltage and oxygen defect [J].
Chen, Tong ;
Hao, Qiang ;
Yang, Wenjuan ;
Xie, Chenlang ;
Chen, Daimei ;
Ma, Chao ;
Yao, Wenqing ;
Zhu, Yongfa .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 237 :442-448
[5]   Enhancement of photocatalytic performance with the use of noble-metal-decorated TiO2 nanocrystals as highly active catalysts for aerobic oxidation under visible-light irradiation [J].
Chen, Yu ;
Wang, Yannan ;
Li, Weizun ;
Yang, Qian ;
Hou, Qidong ;
Wei, Lianghuan ;
Liu, Le ;
Huang, Fang ;
Ju, Meiting .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 210 :352-367
[6]   Spontaneous Redox Approach to the Self-Assembly Synthesis of Au/CeO2 Plasmonic Photocatalysts with Rich Oxygen Vacancies for Selective Photocatalytic Conversion of Alcohols [J].
Cui, Zhiqing ;
Wang, Weikang ;
Zhao, Cuijiao ;
Chen, Chun ;
Han, Miaomiao ;
Wang, Guozhong ;
Zhang, Yunxia ;
Zhang, Haimin ;
Zhao, Huijun .
ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (37) :31394-31403
[7]   Colloidal Synthesis of Ultrathin Monoclinic BiVO4 Nanosheets for Z-Scheme Overall Water Splitting under Visible Light [J].
Dong, Chunwei ;
Lu, Siyu ;
Yao, Shiyu ;
Ge, Rui ;
Wang, Zidong ;
Wang, Ze ;
An, Pengfei ;
Liu, Yi ;
Yang, Bai ;
Zhang, Hao .
ACS CATALYSIS, 2018, 8 (09) :8649-8658
[8]   Gold and gold-palladium alloy nanoparticles on heterostructured TiO2 nanobelts as plasmonic photocatalysts for benzyl alcohol oxidation [J].
Jiang, Tongtong ;
Jia, Chuancheng ;
Zhang, Lanchun ;
He, Shuren ;
Sang, Yuanhua ;
Li, Haidong ;
Li, Yanqing ;
Xu, Xiaohong ;
Liu, Hong .
NANOSCALE, 2015, 7 (01) :209-217
[9]   Hierarchical Bi2MoO6 spheres in situ assembled by monolayer nanosheets toward photocatalytic selective oxidation of benzyl alcohol [J].
Jing, Kaiqiang ;
Ma, Wen ;
Ren, Yahang ;
Xiong, Jinhua ;
Guo, Binbin ;
Song, Yujie ;
Liang, Shijing ;
Wu, Ling .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 243 :10-18
[10]   X-RAY PHOTOELECTRON SPECTROSCOPIC STUDIES OF RUTHENIUM-OXYGEN SURFACES [J].
KIM, KS ;
WINOGRAD, N .
JOURNAL OF CATALYSIS, 1974, 35 (01) :66-72
123456