Ag/AgCl modified self-doped TiO2 hollow sphere with enhanced visible light photocatalytic activity

被引：56

作者：

Yin, Haoyong ^{[1
]}

Wang, Xulong ^{[1
]}

Wang, Ling ^{[2
]}

Nie, QLin ^{[1
]}

Zhang, Yang ^{[3
]}

Yuan, Qiuli ^{[3
]}

Wu, Weiwei ^{[1
]}

机构：

[1] Hangzhou Dianzi Univ, Inst Environm Mat & Applicat, Hangzhou 310018, Peoples R China

[2] Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China

[3] Hangzhou Dianzi Univ, Coll Sci, Hangzhou 310018, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 657卷

关键词：

Self-doped TiO2; Hollow sphere; Surface plasmon resonance; Photocatalyst; BLACK TIO2;

D O I：

10.1016/j.jallcom.2015.10.055

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 Ag/AgCl modified self-doped TiO2 hollow spheres were successfully prepared firstly by a sol-gel method using carbon sphere as template and subsequently deposition-precipitation and photoreduction process. Characteristics and properties of the products were investigated using X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (UV-vis DRS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that the self-doped TiO2 hollow spheres, with diameters about 800-950 nm and shell thickness of 20-30 nm, are constituted with thousands of self-doped TiO2 nanoparticles with diameters of 20-30 nm. Ag/AgCl modified self-doped TiO2 hollow spheres showed broad absorption in the region of 400-700 nm arising from surface plasmon resonance of Ag nanoparticles. The as prepared samples showed improved solar light and visible light induced photocatalytic activities by decomposing Rhodamine B. The improved visible light photocatalytic activities may be due to the oxygen vacancies and Ti3+ localized states of the self-doped TiO2 hollow spheres and the surface plasmonic resonance effect. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：44 / 52

页数：9