Calcium germanate nanowires by vanadium doping with improved photocatalytic activity

被引：10
|
作者：
Pei, L. Z. [1 ]
Wang, S. [1 ]
Lin, N. [1 ]
Lin, H. D. [1 ]
Yu, H. Y. [1 ]
机构：
[1] Anhui Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Sci & Proc Anhui Prov, Maanshan 243002, Anhui, Peoples R China
来源：
JOURNAL OF EXPERIMENTAL NANOSCIENCE | 2015年 / 10卷 / 16期
关键词：
methylene blue; visible light; photocatalytic activity; vanadium doping; calcium germanate nanowires; DOPED TIO2 PHOTOCATALYST; DEGRADATION;
D O I：
10.1080/17458080.2014.989553
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Vanadium-doped calcium germanate nanowires were prepared by a simple hydrothermal method. The samples were analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and solid UV-Vis diffuse reflectance spectrum. The photocatalytic activity of the vanadium-doped calcium germanate nanowires was investigated by the degradation of methylene blue (MB) under solar light irradiation. The results show that the vanadium-doped calcium germanate nanowires are composed of rhombohedral Ca3GeO5 and orthorhombic CaV3O7 phases. The nanowires have the diameter and length of 50-200nm and several dozens of micrometres, respectively. The band gap of the vanadium-doped calcium germanate nanowires strongly depends on the vanadium doping mass percentage. The absorption spectrum can be broadened to visible light region. The photocatalytic activity of the vanadium-doped calcium germanate nanowires is remarkably improved. Vanadium-doped calcium germanate nanowires with the vanadium doping mass percentage of 10% have the highest photocatalytic activity for MB degradation under solar light irradiation.
引用
收藏
页码：1223 / 1231
页数：9
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