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环境化学  2015 

N、S共掺TiO2光催化剂的合成及其在废水处理中的应用

Keywords: 二氧化钛,N,S共掺TiO2,光催化,可见光活性

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Abstract:

采用溶胶-凝胶法制备了N、S共掺TiO2光催化剂,借助X-射线衍射(XRD)、光电子能谱(XPS)、紫外-可见吸收光谱(UV-vis)等测试手段对样品进行表征,并以罗丹明B为模型污染物考察了样品光催化活性.XRD物相鉴定表明,所得TiO2催化剂为锐钛矿和金红石矿的混合型,金红石型的含量在15.2%—10.6%之间,N和S掺杂可有效抑制金红石相的生成;光催化降解实验结果表明,N、S共掺光催化剂具有良好的可见光催化活性,自然光照射10h,N、S共掺催化剂(1.0%N-0.25%S-TiO2)对工业废水COD的去除率高达97.2%.

References

[1]  Ohsaki Y, Masaki N, Kitamura T, et al. Dye-sensitized TiO2 nanotube solar cells: fabrication and electronic characterization [J]. Physical Chemistry Chemical Physics, 2005, 7:4157-4163
[2]  Wei B M, Liu C Y, Liu Y. Bamboo-shaped Ag-doped TiO2 nanowires with heterojunctions [J]. Inorangic Chemistry, 2005, 44:6503-6505
[3]  Li H X, Bian Z F, Zhu J, et al. Mesoporous Au/TiO2 nanocomposites with enhanced photocatalytic activity [J]. Journal of the Americal Chemistr Society, 2007, 129:4538-4539
[4]  Asahi R, Morikawa T, Ohwaki T. Visible-light photocatalysis in nitrogen-doped titanium oxides [J]. Science, 2001, 293:269-271
[5]  Ohno T, Miyamoto Z, Nishijima K, et al. Sensitization of photocatalytic activity of S- or N-doped TiO2 particles adsorbing Fe3+ cations [J]. Applied Catalysis A: General, 2006, 302:62-68
[6]  Suil I, Alexander O, Regina B, et al. Effective visible light-activated B-Doped and B,N-Codoped TiO2 photocatalysts [J]. Journal of the Americal Chemistr Society, 2007, 129:13790-13791
[7]  Gole J L, Stout J D, Burda C, et al. Highly efficient formation of visible light tunable TiO2-xNx [J]. The Journal of Physical Chemistry B, 2004, 108:1230-1240
[8]  王永强, 于秀娟, 孙德智,等. 湿法水解制备可见光催化剂N/TiO2 [J]. 无机化学学报, 2006, 22 (7):1349-1353
[9]  Diwald O, Thompson T L, Zubkov T, et al. Photochemical activity of nitrogen-doped rutile TiO2(110) in visible light[J]. The Journal of Physical Chemistry B, 2004, 108:6004-6008
[10]  Spurr R A, Myers H. Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer [J]. Analytical Chemistry, 1957, 29:760-763
[11]  Wagner C, Muilnberg G. Handbook of X-ray photoelectron spectroscopy[M]. Eden Prairie: Perkin-Elmer Corporation, 1979:68-69
[12]  Clifford J N, Palomares E, Nazeeruddinm K, et al. Multistep electron transfer processes on dye co-sensitized nanocrystalline TiO2 films [J]. Journal of the Americal Chemistr Society, 2004, 126:5670-5671
[13]  Zhao Y X, Qiu X F, Burada C. The effects of sintering on the photocatalytic activity of N-doped TiO2 nanoparticles [J]. Chemistry of Material, 2008, 20:2629-2636
[14]  Ihara T, Miyoshi M, Iriyama Y, et al. Visible-light-active titanium oxide photocatalyst realized by an oxygen-efficient structure and by nitrogen doping [J]. Applied Catalysis (B: Environmental), 2003, 42:403-409
[15]  Lindgren T, Mwabora J M, Avendano E, et al. Photoelectrochemical and potical properties of nitrogen doped titanium dioxide films prepared by reactive magnetron sputering[J]. The Journal of Physical Chemistry B, 2003, 107:5709-5716
[16]  Irie H, Watanabe Y, Hashimoto K. Nitrogen-concentration dependence on photocatalytic activity of TiO2-xNx [J]. The Journal of Physical Chemistry B, 2003, 107:5483-5486
[17]  Li Y Z, Hwang D S, Lee N H, et al. Synthesis and characterization of carbon-doped titania as an artifical solar light sensitive photocatalyst [J]. Chemical Physics Letters, 2005, 404:25-29
[18]  Yamaki T, Sumita T, Yamamoto S. Formation of TiO2-xFx compounds in fluorine-implanted TiO2 [J]. Journal Materials Science Letters, 2002, 21:33-35
[19]  Yu J C, Yu J G, Ho W K, et al. Effects of F- doping on the photocatalytic activity and microstructures of nanocrystalline TiO2 powders [J].Chemistry of Material, 2002, 14:3808-3816
[20]  Zachariasen W H. Theory of X-ray diffraction in crystals[M]. New York: John Wiley & Sons Ins, 1945

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