Synthesis and Optimization of TiO_(2)/Graphene with Exposed {001} Facets Based on Response Surface Methodology and Evaluation of Enhanced Photocatalytic Activity  

作　　者：Yifei Wang Zhiyang Zhang Qianqian Shang Xin Tan Hongmei Wang 

机构地区：[1]School of Environmental Science and Engineering,Tianjin University [2]Tianjin Metro Group Co.,Ltd [3]China Energy Engineering Group Liaoning Electric Power Survey&Design Institute Co.,Ltd [4]School of Chemical Engineering and Technology,Tianjin University [5]School of Science,Tibet University [6]School of Science,Tianjin University

出　　处：《Transactions of Tianjin University》2018年第5期415-423,共9页天津大学学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.21406164,21466035 and 51203111);the National Basic Research Program of China("973"Program,Nos.2012CB720100 and 2014CB239300)

摘　　要：Response surface methodology(RSM)was employed to optimize the control parameters of TiO_(2)/graphene with exposed{001}facets during synthesis,and its enhanced photocatalytic activities were evaluated in the photodegradation of toluene.Experimental results were in good agreement with the predicted results obtained using RSM with a correlation coefficient(R^(2))of 0.9345.When 22.06 mg of graphite oxide(GO)and 2.09 mL of hydrofluoric acid(HF)were added and a hydrothermal time of 28 h was used,a maximum efficiency in the degradation of toluene was achieved.X-ray diffraction(XRD),transmission electron microscopy(TEM),and scanning electron microscopy(SEM)were employed to characterize the obtained hybrid photocatalyst.The electron transferred between Ti and C retarded the combination of electron–hole pairs and hastened the transferring of electrons,which enhanced the photocatalytic activity.

关 键 词：TiO2/graphene Exposed{001}facets SYNTHESIS Response surface METHODOLOGY 

分 类 号：G64[文化科学—高等教育学]