【作者】 王靖宇； 刘志洪； 何治柯； 蔡汝秀；

【Author】 Jing-yu Wang, Zhi-hong Liu*, Zhi-ke He and Ru-xiu Cai Department of Chemistry, Wuhan University, 430072, Wuhan

【机构】 武汉大学化学与分子科学学院；

【Abstract】 Nanosized CdS acting as effective and stable sensitizers, which is coupled to TiO2 by microemulsion-mediated solvothermal hydrolyzation followed by acidic peptization of the precipitate under 70°C, makes it possible to utilize visible light in photocatalysis. In addition, the ‘coupled’ systems are believed to act in a cooperative manner by increasing the degree of charge carrier separation, which effectively reduces recombination. The method is highly simplified and thus eliminates a need of the filtration, sintering, milling and dispersion steps. CdS was successfully incorporated into TiO2 at 0.9% (mol/mol). The hydrosol with small crystalline particles of 1-2 nm diameters was thermodynamically stable and showed a good dispersibility. The photocatalytic activity of the hydrosol was confirmed through the photocatalytic degradation of methylene blue (MB) dye under visible light irradiation.更多还原