Abstract: Conventional titanium dioxide(TiO2) has some problems,such as high energy gap value of which only responded to ultraviolet band,and recombination of photo-generated electrons and holes both inside and on the surface.According to the research shortcoming in photocatalytic application of TiO2,a series of experimental protocols to improve the photocatalytic efficiency were mainly focused.The truncated octahedral TiO2 with high ratio (001) active facet was the study object.TiO2 stripped in alkali environment was modified by graphene quantum dots (GQDs) prepared in optimum process.The GQDs was fabricated by citric acid pyrolysis method.Then,the morphology and structure were characterized.The photocatalytic activities were characterized through electrochemical test platform to analyze the effect of GQDs in promoting the photocatalytic activity of traditional anatase TiO2.The results showed that TiO2 sensitized by GQDs performed excellent photocatalytic activity.
陈萍, 刘婷, 姚凯波, 袁国秋, 石磊, 葛存旺. 石墨烯量子点修饰TiO2复合纳米材料的制备及其光电性能研究[J]. 化工新型材料, 2018, 46(8): 79-84.
Chen Ping, Liu Ting, Yao Kaibo, Yuan Guoqiu, Shi Lei, Ge Cunwang. Preparation and photoelectric property of TiO2 composite nanoparticles modified by graphene quantum dots. New Chemical Materials, 2018, 46(8): 79-84.
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