Efficient one-pot synthesis of Ag nanoparticles loaded on N-doped multiphase TiO2 hollow nanorod arrays with enhanced photocatalytic activity

被引：60

作者：

Wu, Min ^{[1
]}

Yang, Beifang ^{[1
]}

Lv, Yan ^{[1
]}

Fu, Zhengping ^{[1
]}

Xu, Jiao ^{[1
]}

Guo, Ting ^{[1
]}

Zhao, Yongxun ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2010年 / 256卷 / 23期

基金：

美国国家科学基金会;

关键词：

Ag loading and N doping; Phase transformation; TiO2 hollow nanorod arrays; Liquid phase deposition (LPD); Photocatalysis; Methylene blue (MB); VISIBLE-LIGHT ACTIVITY; SILVER NANOPARTICLES; PHASE-TRANSFORMATION; THIN-FILMS; HIGHLY EFFICIENT; NANOTUBE-ARRAYS; TITANIA; SURFACE; POWDERS; ZNO;

D O I：

10.1016/j.apsusc.2010.05.038

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：

The simultaneous Ag loaded and N-doped TiO2 hollow nanorod arrays with various contents of silver (Ag/N-THNAs) were successfully synthesized on glass substrates by one-pot liquid phase deposition (LPD) method using ZnO nanorod arrays as template. The catalysts were characterized by Raman spectrum, field-emission scanning electron microscopy (FESEM), high-resolution transmission electron microscope (HRTEM), ultraviolet-vis (UV-vis) absorption spectrum and X-ray photoelectron spectroscopy (XPS). The results suggest that AgNO3 additive in the precursor solutions not only can promote the anatase-to-rutile phase transition, but also influence the amount of N doping in the samples. The photocatalytic activity of all the samples was evaluated by photodegradation of methylene blue (MB) in aqueous solution. The sample exhibited the highest photocatalytic activity under UV light illumination when the AgNO3 concentration in the precursor solution was 0.03 M, due to Ag nanoparticles acting as electron sinks; When the AgNO3 concentration was 0.07 M, the sample performed best under visible light illumination, attributed to the synergetic effects of Ag loading, N doping, and the multiphase structure (anatase/rutile). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：7125 / 7130

页数：6

共 48 条

[1] Preparation of Ag-doped mesoporous titania and its enhanced photocatalytic activity under UV light irradiation [J].