Effect of pH Value on Morphology and Photocatalytic Performance of SnO2/ZnO

被引：0
|
作者：
Yu Y. [1 ,2 ]
Yao B. [1 ]
Cao B. [2 ]
Ma W. [1 ]
Yang X. [2 ]
机构：
[1] School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, Shaanxi
[2] Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, 726000, Shaanxi
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2019年 / 47卷 / 06期
关键词：
Morphology; PH value; Photocatalytic activity; Tin oxide/zinc oxide;
D O I：
10.14062/j.issn.0454-5648.2019.06.18
中图分类号：
学科分类号：
摘要：
To investigate the influence of solution pHvalue on the morphology and photo-catalytic activity of SnO2/ZnO, zinc chloride and tin tetrachloride were used as raw materials and a series of SnO2/ZnO materials were synthesized by a hydrothermal method at different solution pH values. Methylene blue (MB), as a photocatalytic degradation target, was used toevaluate the photocatalytic performance of SnO2/ZnO. The samples were characterized by Fourier transformed infrared spectroscopy, X-ray diffraction, scanning electronic microscopy, ultraviolet-visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and N2 adsorption-desorption isotherms, respectively. The results show that the various morphologies of SnO2/ZnO, such as granular, cubic and spherical, can be obtainedvia changing the acidity of reaction solution. In addition, the photodegradation experiments show that the photocatalytic activity of all SnO2/ZnO samples is all greater than that of pure ZnO and SnO2. The sample (Zn-9) prepared at pH value 9 with a cubic-like morphology has the optimum best photocatalytic activity for the degradation MB (10mg/L)and can reach 97.5% of degradation rate in 70min, which remains a better photocatalytic activity after five cycles. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：834 / 841
页数：7
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