Heterostructured Ag3PO4/TiO2 nano-sheet film with high efficiency for photodegradation of methylene blue

被引：48

作者：

Tang, Chunni ^{[1
,2
]}

Liu, Enzhou ^{[1
]}

Fan, Jun ^{[1
]}

Hu, Xiaoyun ^{[3
]}

Kang, Limin ^{[1
]}

Wan, Jun ^{[1
]}

机构：

[1] NW Univ Xian, Sch Chem Engn, Xian 710069, Peoples R China

[2] Shaanxi Inst Technol, Dept Chem Engn, Xian 710300, Peoples R China

[3] NW Univ Xian, Dept Phys, Xian 710069, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 10期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Ag3PO4; TiO2 nano-sheet film; Heterostructure; Photocatalyst; ENHANCED PHOTOCATALYTIC ACTIVITY; TIO2; NANOPARTICLES; DEGRADATION; COMPOSITE; OXIDATION; HYDROGEN; WATER;

D O I：

10.1016/j.ceramint.2014.06.116

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Heterostructured Ag3PO4/TiO2 nano-sheet film (Ag3PO4/TiO2 NSF) was fabricated by depositing Ag3PO4 particles on the surface of TiO2 NSF through an impregnating-deposition method under room conditions. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), UV-vis absorption spectroscopy (UV-vis) and photoluminescence spectroscopy (PL). The photodegradation of methylene blue (MB) under visible light and UV light irradiation was investigated over Ag3PO4/TiO2 NSFs with different Ag3PO4 concentrations. Ag3PO4/TiO2 NSF showed obviously superior photocatalytic degradation of MB due to the heterostructure of the catalyst which could improve the visible light absorption ability and the separation of photoexcited electron hole pairs. The rate constant of MB degradation over the optimal sample (0.03 M Ag3PO4/TiO2 NSF) was much faster than that of pure TiO2 NSF by a factor of 22.00 and 8.45 under visible-light and UV light irradiation respectively. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：15447 / 15453

页数：7

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