Synthesis of flower-like SnO2 single crystals and its enhanced photocatalytic activity

被引：44
|
作者：
Dai, Shudong [1 ]
Yao, Zhongliang [2 ]
机构：
[1] Zhangzhou Normal Univ, Dept Chem & Environm Sci, Zhangzhou 363000, Peoples R China
[2] Fujian Normal Univ, Fuqing Branch, Dept Biol & Chem Engn, Fuqing 350300, Fujian, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 15期
关键词：
SnO2; Flower-like; Environmental performance; Photocatalytic mechanism; NANOSTRUCTURES; NANOPARTICLES; DEGRADATION; DYES;
D O I：
10.1016/j.apsusc.2012.02.065
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：
Flower-like SnO2 single crystals were successfully synthesized using hydrothermal method and characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), field emission scanning electron microscopy (FESEM) and UV-vis diffuse reflectance (DRS). As-synthesized flower-like SnO2 single crystals exhibited higher photoactivity (about 2.2 times) than granular SnO2 for degradation of Rhodamine B (RhB) dye. The trapping experiment showed that the holes (h(+)) and hydroxyl radical ((OH)-O-center dot) were the main active species in the photodegradation process. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：5703 / 5706
页数：4
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