A sol-gel method was used to compound lanthanum,graphene oxide(GO) and TiO2 to prepare an efficient photocatalytic material with visible light response.The crystal structure and morphology of the catalyst were characterized by means of X-ray diffractometer,Fourier infrared,scanning electron microscopy.Acid red B was used as the target pollutant to study the photodegradability of the composite material under simulated sunlight irradiation.The experimental results showed that the doping of lanthanum and GO significantly improved the photocatalytic activity of TiO2.When the doping amount of lanthanum was 0.5% (mass ratio) and the doping amount of GO was 0.2% (mass ratio),the photodegradation rate of acid red B was 95.6%.
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基金资助
湖南省自然科学基金青年基金(2020JJ5133);贵州省教育厅青年科技人才成长项目(黔教KY字[2019]175);湖南省教育厅科研项目(20C0608)
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