Photocatalytic activity of CdS nanoparticles synthesized by a facile composite molten salt method

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• 作者：Xiaoyan Li ; Chenguo Hu ; ^{hucg@cqu.edu.cn} ; Xue Wang ; Yi Xi
• 关键词：CdS ; Nanoparticles ; Composite-molten-salt ; Photodegradation
• 刊名：Applied Surface Science
• 出版年：2012
• 期刊代码：6_01694332
• 类别：ms
• 出版时间：1 March, 2012
• 卷：258
• 期：10
• 页码：4370-4376
• 文件大小：685 K

摘要

Single-crystalline CdS nanoparticles were synthesized for the first time by the composite-molten-salt (CMS) method, with advantages of one-step, ambient pressure, low temperature, template-free and low cost. The influence of temperature, growth time and amount of salts on the morphology of CdS nanoparticles was systematically investigated. It shows that a smaller size of CdS nanoparticles can be obtained under lower temperature, less growth time and more composite salts. UV-vis reflection spectrum of the nanoparticles reveals that the nanoparticles have a bandgap of 2.34 eV. Photoluminescence spectrum was also carried out to explore its optical property. Photocatalytic degradation of rhodamine B (RhB) and methylene blue (MB) in presence of the CdS nanoparticles was compared with that in presence of the commercial TiO₂ nanoparticles under the simulated sunlight.