Ag掺杂WO_3纳米材料的光电催化性能研究
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摘要
以钨酸铵、硝酸银为原料制备了Ag掺杂WO_3纳米材料,对材料进行X射线衍射(XRD)、扫描电子显微镜(SEM)表征,并在不同外加电压下测试材料光催化降解罗丹明B的性能。实验结果表明,适当的外加电场加快了Ag掺杂WO_3纳米材料光催化降解罗丹明B的速率。
Ag-doped WO_3 nano materials are prepared with ammonium tungstate and silver nitrate as raw materials. X-ray diffraction(XRD) and scanning electron microscope(SEM) are used to characterize the materials. The photocatalytic degradation of Rhodamine B is tested under different applied voltage. The experimental results show that the appropriate applied electric field accelerates the degradation of Rhodamine B by Ag-doped nano-WO_3 photocatalysis.
Ag-doped WO_3 nano materials are prepared with ammonium tungstate and silver nitrate as raw materials. X-ray diffraction(XRD) and scanning electron microscope(SEM) are used to characterize the materials. The photocatalytic degradation of Rhodamine B is tested under different applied voltage. The experimental results show that the appropriate applied electric field accelerates the degradation of Rhodamine B by Ag-doped nano-WO_3 photocatalysis.
引文
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[3]Kim H,Senthil K,Yong K.Photoelectrochemical and photocatalytic properties of tungsten oxide nanoroda grown by thermal evaporation[J].Materials Chemistry and Physics,2005,120(2):452-455.
[4]J.M.Wang,X.W.Sun,Z.H.Jiao.Application of Nanostructures in Electrochromic Materials and Devices:Recent Progress[J].Materials,2010,3:5029-5053.
[5]S.Balaji,Y.Djaoued,A.S.Albert,et al.Porous orthorhombic tungsten oxide thin films:synthesis,characterization,and application in electrochromic and photochromic devices[J].J.Mater.Chem.,2011,21(11):3940-3948.
[6]J.Wang,E.Khoo,P.S.Lee,et al.Synthesis,Assembly,and Electrochromic Properties of Uniform Crystalline WO3Nanorods[J].J.Phys.Chem.C.,2008,l 12(37):14306-14312.
[7]A.Bessire,L.Beluze,M.Morcrette,et a1.Control of Powder Microstructure for Improved Infrared Reflectance Modulation of an Electrochromic Plastic Device[J].Chem.Mater,2003,15(13):2577-2583.
[8]M.D.Arienzo,L.Armelao,C.M.Mari,et al.Macroporous WO3 Thin Films Active in NH3Sensing:Role of the Hosted Cr Isolated Centers and Pt Nanocluster[J].J.Am.Chem.Soc.2011,133(14):5296-5304.
[9]邹丽霞,钟秦,刘庆成.纳米三氧化钨的制备、表征及掺稀土后光催化活性研究[J].中国稀土学报,2005,23(5):602-608.
[10]赵娟,刘士军.钇掺杂WO3的制备及光催化分解水析氧活性[J].中国有色金属学报,2008,2(2):330-335.
[11]杜俊平,李杰,陈启元,等.低含量Pr3+掺杂WO3的制备及其光催化分解水析氧活性[J].中国有色金属学报,2007,10(10):1655-1700.
[12]罗莎,李洁,杜俊平,等.La3+掺杂WO3的制备及其光催化分解水活性的研究[J].中国钨业,2010,6(3):24-26.
[13]崔玉民,洪文珊.WO3/Zn O光催化降解酸性黑染料的研究[J].材料导报网刊,2011,6(2):22-25.
[14]K.Vinodgopal,S.Hotchandani,P.V.Kamat.Electrochemically assisted photocatalysis:titania particulate film electrodes for photocatalytic degradation of 4-chlorophenol[J].Journal of Physical Chemistry,1993,97(35):9040-9044.