Cu-doped TiO2/reduced graphene oxide thin-film photocatalysts: Effect of Cu content upon methylene blue removal in water
作者： Thanh-Truc Pham , Chinh Nguyen-Huy , Hyun-Jun Lee , Thuy-Duong Nguyen-Phan , Tae Hwan Son
DOI: 10.1016/J.CERAMINT.2015.05.068
关键词:
摘要: Abstract Photocatalytic thin films on quartz substrates were simply prepared by spraying a sol of copper metal (Cu)-doped titanium dioxide (TiO 2 ) combined with reduced graphene oxide (RGO). Cu-doped TiO /RGO powders containing different amounts Cu synthesized to investigate the effect content upon photodegradation methylene blue in water, and used preparation sols /RGO. The film photocatalysts showed better performance than an undoped film. After 180 min UV irradiation, 7.5-CTG-5 (7.5 wt% 5 wt% RGO) photocatalyst removed 63% from aqueous solution initial concentration 10 ppm, whereas 0-CTG-5 (0 wt% decomposed only 28% blue, indicating that presence enhanced photocatalytic activity. Doped could narrow bandgap , thereby influencing reduction enhancing hydrophilicity materials, thus producing observed increase relationships between activity are discussed herein.
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