钨酸铋-石墨烯复合物的制备及其可见光降解甲基橙的性能研究
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摘要
通过水热法制备一系列钨酸铋-石墨烯复合物材料,以可见光降解甲基橙为模型反应,评价其光催化活性。详细考察了不同煅烧温度、石墨烯含量对钨酸铋-石墨烯复合物材料光催化降解性能的影响。实验表明,石墨烯含量为24wt%,煅烧温度为200℃时所制备的钨酸铋-石墨烯催化剂对甲基橙的降解性能最好,降解率可达到93.9%。
A series of Bi_2WO_6-graphene(GO) were prepared by hydrothermal method, and their photocatalytic activity were tested via the degradation of methyl orange(MO) under visible light. The effects of calcined temperatures and the amounts of graphene on the photocatalytic activity of degradation MO were investigated. Under optimized conditions, the degradation rate of methyl orange could reach 93.9% when the catalyst calcined at 200 degree Celsius and the amounts of graphene is 24 wt%.
A series of Bi_2WO_6-graphene(GO) were prepared by hydrothermal method, and their photocatalytic activity were tested via the degradation of methyl orange(MO) under visible light. The effects of calcined temperatures and the amounts of graphene on the photocatalytic activity of degradation MO were investigated. Under optimized conditions, the degradation rate of methyl orange could reach 93.9% when the catalyst calcined at 200 degree Celsius and the amounts of graphene is 24 wt%.
引文
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[2]Dhananja S B,Vishwas G P,Anthony A B,et al.Solar-assisted photochemical and photocatalytic degradation of phenol[J].Water Chemi Techno,2001,76:363-370.
[3]Jing L Q,Sun X J,Shang J.Light trapping in spherical silicon solar cell module[J].Sol Energ Mat Sol C,2003,79(2):133-124.
[4]Juan Z,Xu D Y.Photocatalytic oxidation for indoor air purification:A literature review[J].Build Environ,200,38(5):645-654.
[5]Li E J,Zhang Q,Li W H,et al.Bismuth-containing semiconductor photocatalysts[J].Prog Chem,2010,22:2282-2289.
[6]Zhang L P,Yuan S,Hu F,et.al.Bismuth(V)-containing semiconductor compounds and their applications in heterogeneous photocatalysis[J].Prog in Chem,2010,22(9):1729-1734.
[7]Shang M,Wang W Z,Ren J,et al.A practical visible light drive Bi2WO6nanofibrous prepared by electrospinning[J].J Materi Chem,2009,19:6213-6218.
[8]Zhang L W,Xu T G,Zhao X,et al.Controllable synthesis of Bi2Mo O6and effect of morphology and variation in local structure on photocatalytic activities[J].Appl Catal B Environ,2010,98(3-4):138-146.
[9]Zhang X,Ai Z H,Jia F L,et al.Generalized one-pot synthesis,characterization,and photocatalytic activity of hierarchical Bi OX(X=Cl,Br,I)nanoplate microspheres[J].J Physi Chem C,2008,112(3):747-753.
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[12]Novoselov K S,Geim A K,Morozov S V,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306:666-669.
[13]Chae H K,Siberio P D Y,Kim J.A route to high surface area,porosity and inclusion of large molecules in crystals[J].Nature,2004,427:523-527.
[14]An X Q,Yu J C.Graphene-based photocatalytic composites[J].RSC Advances,2011,1,1426-1434.
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