Enhanced photocatalytic activity of Z-scheme CeO2/CexBi2-xWO6 heterojunction induced by Ce doping and build-in electric field

被引：1

作者：

Yang, Wei ^{[1
,2
]}

Wang, Min ^{[1
]}

Xu, Chi ^{[1
]}

Dong, Shaohua ^{[3
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China

[2] AVIC Qing An Croup Co LTD, Xian 710077, Shaanxi, Peoples R China

[3] China Acad Space Technol, Xian 710100, Shaanxi, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2022年 / 33卷 / 08期

基金：

中国国家自然科学基金;

关键词：

TETRACYCLINE HYDROCHLORIDE; EFFICIENT PHOTOCATALYST; HYDROTHERMAL SYNTHESIS; OXYGEN VACANCIES; DOPED BI2WO6; DEGRADATION; PERFORMANCE; CO2; NANOSHEETS; REDUCTION;

D O I：

10.1007/s10854-022-07693-0

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

CeO2/CexBi2-xWO6 heterojunction was synthesized by the one-step microwave hydrothermal method. Compared with the pure Bi2WO6, the light response range of CeO2/CexBi2-xWO6 was obviously broadened due to the formation of the interface heterojunction. Moreover, the higher concentration of oxygen vacancies was introduced into CeO2/CexBi2-xWO6 induced by Ce doping. Due to the synergistic effect of the heterojunction and oxygen vacancies, the prepared heterojunction showed the significantly improved separation efficiency and migration rate of the photogenerated electron-hole pairs. The build-in electric field from CeO2 to CexBi2-xWO6 was constructed induced by the polarization charge transfer, resulting in the transition from II-type heterojunction to Z-scheme structure, and the stronger redox ability of the photoinduced carriers. Hence, the prepared CeO2/CexBi2-xWO6 heterojunction exhibited enhanced photocatalytic activity for organic pollutants degradation. This work provided a feasible strategy for the preparation of heterojunction photocatalysts with high visible light activity.

引用

页码：5049 / 5060

页数：12

共 49 条

[1] Novel flake-like Z-Scheme Bi2WO6-ZnBi2O4 heterostructure prepared by sonochemical assisted hydrothermal procedures with enhanced visible-light photocatalytic activity [J].

Bahadoran, Ashkan ;

Farhadian, Mousa ;

Hoseinzadeh, Ghader ;

Liu, Qinglei .

JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 883

[2] Microwave-assisted assembly of Ag2O-ZnO composite nanocones for electrochemical detection of 4-Nitrophenol and assessment of their photocatalytic activity towards degradation of 4-Nitrophenol and Methylene blue dye [J].

Chakraborty, Urmila ;

Bhanjana, Gaurav ;

Kannu ;

Kaur, Navneet ;

Sharma, Ramesh ;

Kaur, Gurpreet ;

Kaushik, Ajeet ;

Chaudhary, Ganga Ram .

JOURNAL OF HAZARDOUS MATERIALS, 2021, 416

[3] Ambient-Stable Black Phosphorus-Based 2D/2D S-Scheme Heterojunction for Efficient Photocatalytic CO2 Reduction to Syngas [J].

Chen, Cao ;

Hu, Jundie ;

Yang, Xiaogang ;

Yang, Tingyu ;

Qu, Jiafu ;

Guo, Chunxian ;

Li, Chang Ming .

ACS APPLIED MATERIALS & INTERFACES, 2021, 13 (17) :20162-20173

[4] Recent advances on Bi2WO6-based photocatalysts for environmental and energy applications [J].

Chen, Tong ;

Liu, Lizhen ;

Hu, Cheng ;

Huang, Hongwei .

CHINESE JOURNAL OF CATALYSIS, 2021, 42 (09) :1413-1438

[5] Enhanced solar photocatalytic degradation of nitric oxide using graphene quantum dots/bismuth tungstate composite catalysts [J].

Cui, Yunpei ;

Wang, Teng ;

Liu, Jiayou ;

Hu, Lizhen ;

Nie, Qianqian ;

Tan, Zhongchao ;

Yu, Hesheng .

CHEMICAL ENGINEERING JOURNAL, 2021, 420

[6] Oxygen Vacancy Engineering of Titania-Induced by Sr2+ Dopants for Visible-Light-Driven Hydrogen Evolution [J].

Gao, Lu-Sha ;

Zhang, Shi-Nan ;

Zou, Xiaoxin ;

Wang, Jingfeng ;

Su, Juan ;

Chen, Jie-Sheng .

INORGANIC CHEMISTRY, 2021, 60 (01) :32-36

[7]

Hassan AI., 2018, Int. J. Nanoelectron. Mater, V11, P47

[8] Photo-catalytic activity of BiVO4 thin-film electrodes for solar-driven water splitting [J].

Hernandez, Simelys ;

Thalluri, Sitaramanjaneya Mouli ;

Sacco, Adriano ;

Bensaid, Samir ;

Saracco, Guido ;

Russo, Nunzio .

APPLIED CATALYSIS A-GENERAL, 2015, 504 :266-271

[9] Construction of Bi2WO6/RGO/g-C3N4 2D/2D/2D hybrid Z-scheme heterojunctions with large interfacial contact area for efficient charge separation and high-performance photoreduction of CO2 and H2O into solar fuels [J].

Jo, Wan-Kuen ;

Kumar, Santosh ;

Eslava, Salvador ;

Tonda, Surendar .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 239 :586-598

[10] ZnO nanosheets-decorated Bi2WO6 nanolayers as efficient photocatalysts for the removal of toxic environmental pollutants and photoelectrochemical solar water oxidation [J].

Koutavarapu, Ravindranadh ;

Babu, Bathula ;

Reddy, Ch Venkata ;

Reddy, I. Neelakanta ;

Reddy, Kakarla Raghava ;

Rao, M. C. ;

Aminabhavi, Tejraj M. ;

Cho, Migyung ;

Kim, Dongseob ;

Shim, Jaesool .

JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2020, 265

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