光催化
水热碳化
材料科学
纳米颗粒
热液循环
硫化镉
煅烧
化学工程
水溶液
碳化
甲基橙
催化作用
碳纤维
醋酸镉
无机化学
硫脲
纳米技术
化学
镉
扫描电子显微镜
有机化学
工程类
复合数
复合材料
冶金
作者
Shuai Zou,Zaihui Fu,Chao Xiang,Wenfeng Wu,Senpei Tang,Yachun Liu,Dulin Yin
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2015-07-01
卷期号:36 (7): 1077-1085
被引量:18
标识
DOI:10.1016/s1872-2067(15)60827-0
摘要
Carbon-coated CdS ([email protected]) nanoparticles were conveniently prepared by a one-step hydrothermal carbonization method at temperature as low as 130 °C, in which cadmium acetate and glucose were used as the cadmium and carbon sources, respectively, and thiourea was used as the sulfur source and catalyst for the hydrothermal carbonization of glucose. The prepared [email protected] particles possess a smaller size, better dispersion, and more uniform distribution than pure CdS particles prepared under the same conditions. Furthermore, the hydrothermal carbonization of glucose easily induces the prior formation of metastable cubic CdS crystals. In addition, the carbonaceous species coated on the surface of CdS expands the range of absorption light and slightly decreases the band gap of CdS, as well as reduces the recombination of the photogenerated electron-hole pairs of CdS and its photo-oxidative corrosion, which can improve the photocatalytic activity and stability of CdS for the photo-oxidative degradation of methyl orange in aqueous solution under visible light irradiation.
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