Oxygen Vacancy-Enhanced Ultrathin Bi2O3-Bi2WO6 Nanosheets' Photocatalytic Performances under Visible Light Irradiation

被引：28

作者：

Bai, Jinwu ^{[1
,2
]}

Ren, Xiaolei ^{[1
]}

Chen, Xue ^{[2
]}

Lu, Peng ^{[1
]}

Fu, Min ^{[1
]}

机构：

[1] Chongqing Technol & Business Univ, Coll Environm & Resources, Chongqing Key Lab Catalysis & New Environm Mat, Chongqing 400067, Peoples R China

[2] Nankai Univ, Coll Environm Sci & Engn, Tianjin Key Lab Environm Remediat & Pollut Contro, Tianjin 300071, Peoples R China

来源：

LANGMUIR | 2021年 / 37卷 / 16期

关键词：

GRAPHENE OXIDE; CO2; REDUCTION; BI2WO6; PHOTOCATALYST; CRYSTAL-STRUCTURE; DEFECTS; HETEROJUNCTIONS; DEGRADATION; SEPARATION; CONVERSION; NANOTUBES;

D O I：

10.1021/acs.langmuir.1c00576

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The oxygen vacancy caused by ultrathin structures would be introduced into the semiconductor photocatalyst to boost its photocatalytic activity. Herein, ultrathin Bi2O3-Bi2WO6 nanosheet composites have been successfully synthesized via a facile hydrothermal method. Compared to pure Bi2WO6 nano-sheets, the Bi2O3-Bi2WO6 nanosheet composites possess abundant oxygen vacancies, which was confirmed by the positron annihilation spectra. The ultrathin Bi2O3-Bi2WO6 nanosheet composites exhibited remarkable photocatalytic degradation performance for oxytetracycline compared with that of pure Bi2WO6 nanosheets. The excellent photocatalytic activities of Bi2O3-Bi2WO6 composites could be attributed to the hetero-junction structure and the oxygen vacancies caused by ultrathin structures.

引用

页码：5049 / 5058

页数：10

共 60 条

[1] Highly efficient Z-scheme structured visible-light photocatalyst constructed by selective doping of Ag@AgBr and Co3O4 separately on {010} and {110} facets of BiVO4: Pre-separation channel and hole-sink effects [J].

Chen, Fangfei ;

Wu, Chaoyue ;

Wang, Jinnan ;

Francois-Xavier, Corvini Philippe ;

Wintgens, Thomas .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 250 :31-41

[2] Efficient Degradation of an Antibiotic Norfloxacin in Aqueous Solution via a Simulated Solar-Light-Mediated Bi2WO6 Process [J].

Chen, Meijuan ;

Chu, Wei .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2012, 51 (13) :4887-4893

[3] Enhanced Photocatalytic Removal of Sodium Pentachlorophenate with Self-Doped Bi2WO6 under Visible Light by Generating More Superoxide Ions [J].

Ding, Xing ;

Zhao, Kun ;

Zhang, Lizhi .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (10) :5823-5831

[4] Multilayer-Grown Ultrathin Nanostructured GaAs Solar Cells as a Cost-Competitive Materials Platform for III-V Photovoltaics [J].

Gai, Boju ;

Sun, Yukun ;

Lim, Haneol ;

Chen, Huandong ;

Faucher, Joseph ;

Lee, Minjoo L. ;

Yoon, Jongseung .

ACS NANO, 2017, 11 (01) :992-999

[5] Growth of Ultrathin ZnCo2O4 Nanosheets on Reduced Graphene Oxide with Enhanced Lithium Storage Properties [J].

Gao, Guoxin ;

Wu, Hao Bin ;

Dong, Bitao ;

Ding, Shujiang ;

Lou, Xiong Wen .

ADVANCED SCIENCE, 2015, 2 (1-2)

[6] Enhanced photocatalytic performances of n-TiO2 nanotubes by uniform creation of p-n heterojunctions with p-Bi2O3 quantum dots [J].

Ge, Mingzheng ;

Cao, Chunyan ;

Li, Shuhui ;

Zhang, Songnan ;

Deng, Shu ;

Huang, Jianying ;

Li, Qingsong ;

Zhang, Keqin ;

Al-Deyab, Salem S. ;

Lai, Yuekun .

NANOSCALE, 2015, 7 (27) :11552-11560

[7] Ultrathin MoS2(1-x)Se2x Alloy Nanoflakes For Electrocatalytic Hydrogen Evolution Reaction [J].

Gong, Qiufang ;

Cheng, Liang ;

Liu, Changhai ;

Zhang, Mei ;

Feng, Qingliang ;

Ye, Hualin ;

Zeng, Min ;

Xie, Liming ;

Liu, Zhuang ;

Li, Yanguang .

ACS CATALYSIS, 2015, 5 (04) :2213-2219

[8] Transition Metal Oxide Work Functions: The Influence of Cation Oxidation State and Oxygen Vacancies [J].

Greiner, Mark T. ;

Chai, Lily ;

Helander, Michael G. ;

Tang, Wing-Man ;

Lu, Zheng-Hong .

ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (21) :4557-4568

[9] Vacancy Associates Promoting Solar-Driven Photocatalytic Activity of Ultrathin Bismuth Oxychloride Nanosheets [J].

Guan, Meili ;

Xiao, Chong ;

Zhang, Jie ;

Fan, Shaojuan ;

An, Ran ;

Cheng, Qingmei ;

Xie, Junfeng ;

Zhou, Min ;

Ye, Bangjiao ;

Xie, Yi .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (28) :10411-10417

[10] Hierarchically structured ternary heterojunctions based on Ce3+ / Ce4+ modified Fe3O4 nanoparticles anchored onto graphene oxide sheets as magnetic visible-light-active photocatalysts for decontamination of oxytetracycline [J].

Hassandoost, Ramin ;

Pouran, Shima Rahim ;

Khataee, Alireza ;

Orooji, Yasin ;

Joo, Sang Woo .

JOURNAL OF HAZARDOUS MATERIALS, 2019, 376 :200-211

← 1 2 3 4 5 6 →