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《Journal of Materials Science and Engineering》 2011-02
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Preparation and Photocatalytic Activity of TiO_2 /Graphene Composites

WANG Zhao~1,MAO Feng~1,HUANG Xing-ping~1,HUANG Ying-ping~2,FENG Sheng-qin~1,YI Jia~1,ZHANG Chang-yuan~1,LIU Shuan~2(1.College of Science,Three Gorges University,Yichang 443002,China;2.Alan G.MacDiarm id Research Institute for Renewable Energy,Three Gorges University,Yichang 443002,China)  
TiO_2/Graphene composites(TiO_2/GR) synthesized by one-step hydrothermol method using graphene oxide(GO) and tetra-n-butyl titanate.Influences of different dosages of GO,reaction temperature and time on the photocatalytic activity of TiO_2/GR were studied.Crystal structure,particle size,morphology and specific surface area of TiO_2/GR were characterized by X-ray diffractometry(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM) and Brumauer-Emmett-Tller(BET) analysis.Results show that the optimum conditions for TiO_2/GR as follows: dosage of GO,reaction temperature and time of the composites are 1mg,180℃ and 16 h,respectively.TiO_2 in composites is anatase and average diameter is about 18 nm.Specific surface area of the TiO_2/GR is 170 m~2/g and average pore diameter is 12.45 nm.Under visible light(λ420nm),activity of photodegradating RhB by TiO_2/GR is better than that of TiO_2 obtained under the same conditions.
【Fund】: 国家自然科学基金资助项目(10975091);; 湖北省教育厅自然科学重大资助项目(2004Z002)
【CateGory Index】: TB332
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