Ag3PO4/TiO2 heterostructures with enhanced photocatalytic activity

被引：12

作者：

Li, Junqi ^{[1
]}

Guo, Zhanyun ^{[1
]}

Liu, Zhenxing ^{[1
]}

Cui, Mingming ^{[1
]}

Zhu, Zhenfeng ^{[1
]}

机构：

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

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2015年 / 212卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Ag3PO4; TiO2; composite; heterostructures; photocatalytic activity; EFFICIENT DEGRADATION; TIO2; AG; PHOTOLUMINESCENCE; NANOCOMPOSITES; SEMICONDUCTOR; OXIDATION; WATER;

D O I：

10.1002/pssa.201431537

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Heterostructured Ag3PO4/TiO2 composites have been fabricated via an in situ precipitation method by depositing Ag3PO4 nanoparticles onto the surface of TiO2 microspheres. The enhanced photocatalytic activity of the Ag3PO4/TiO2 heterostructures for the degradation of rhodamine B (RhB) under UV light irradiation could be attributed to the effective separation of photogenerated electron-hole pairs driven by the photoinduced potential difference generated at the Ag3PO4/TiO2 heterojunction interface. Furthermore, when 10at% (molar percentage) of Ag3PO4 is loaded onto the TiO2 surface, the Ag3PO4/TiO2 composites exhibit the best photocatalytic activity and the rate constant of RhB degradation is over three times that of pure TiO2. In addition, the mechanism for the enhancement of the photocatalytic activity of Ag3PO4/TiO2 is also investigated by comparison of their PL spectra.

引用

页码：459 / 466

页数：8

共 39 条

[1] Production of electricity by photoelectrochemical oxidation of ethanol in a PhotoFuelCell [J].

Antoniadou, Maria ;

Lianos, Panagiotis .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 99 (1-2) :307-313

[2] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[3]

BARRINGER EA, 1982, J AM CERAM SOC, V65, pC199, DOI 10.1111/j.1151-2916.1982.tb09948.x

[4] Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties [J].

Bi, Yingpu ;

Ouyang, Shuxin ;

Umezawa, Naoto ;

Cao, Junyu ;

Ye, Jinhua .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (17) :6490-6492

[5] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[6] Apatite-coated Ag/AgBr/TiO2 visible-light photocatalyst for destruction of bacteria [J].

Elahifard, Mohammad R. ;

Rahimnejad, Sara ;

Haghighi, Saeed ;

Gholami, Mohammad R. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (31) :9552-+

[7] Anatase TiO2 nanocomposites for antimicrobial coatings [J].

Fu, GF ;

Vary, PS ;

Lin, CT .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (18) :8889-8898

[8] Visible-light-induced degradation of rhodamine B by nanosized Bi2WO6 [J].

Fu, HB ;

Pan, CS ;

Yao, WQ ;

Zhu, YF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (47) :22432-22439

[9] V2O5/Al2O3 composite photocatalyst: Preparation, characterization, and the role of Al2O3 [J].

Fu, Xianliang ;

Tang, Wenming ;

Ji, Lei ;

Chen, Shifu .

CHEMICAL ENGINEERING JOURNAL, 2012, 180 :170-177

[10] Time-resolved photoluminescence of particulate TiO2 photocatalysts suspended in aqueous solutions [J].

Fujihara, K ;

Izumi, S ;

Ohno, T ;

Matsumura, M .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2000, 132 (1-2) :99-104

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