Cr/S/TiO2-LOADED HOLLOW GLASS MICROSPHERES AS AN EFFICIENT AND RECYCLABLE CATALYST FOR THE PHOTOCATALYTIC DEGRADATION OF INDIGO CARMINE UNDER VISIBLE LIGHT

Química Nova

Du, Yingqiu¹  Sun, Zhibo¹  Wu, Yan¹  Ma, Shichao¹  Heilongjiang Academy of Agricultural Sciences, Nangang, P. R. China¹  Zhang, Xiuli¹  Heilongjiang University, Nangang, P. R. China¹  Yin, Yidong¹ 

关键词:  hollow glass microspheres;    visible light;    indigo carmine;    TiO2;    photocatalytic degradation;   

DOI  :  10.21577/0100-4042.20160121

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Chromium and sulfur co-doped nanometer TiO2 hollow glass microspheres (Cr/S/TiO2-HGM) were synthesized by a sol-gel method. Characterization used X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), N2 adsorption-desorption (Brunauer-Emmett-Teller (BET) measurements) and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activity was evaluated by photodegradation of indigo carmine in an aqueous solution under visible light irradiation. The results indicated that the Cr/S/TiO2 containing 0.60% (atomic ratio) chromium and 1.2% (atomic ratio) sulfur calcined at 500 ºC for 2 h had high catalytic efficiency under visible light irradiation. The floating Cr/S/TiO2-HGM catalyst had greater photocatalytic activity than Cr/S/TiO2 powder. Therefore, Cr/S/TiO2-HGM is a promising, high-performing, visible-light-driven, and more reusable photocatalyst.

【 授权许可】

Unknown