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Ba/TiO2/MCM-41光催化降解对硝基苯甲酸

Keywords: Ba/TiO2/MCM-41,对硝基苯甲酸,光催化,降解率

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Abstract:

以钛酸丁酯为钛源、MCM-41分子筛为载体，采用溶胶凝胶法制备了掺杂与负载相结合的光催化剂Ba/TiO2/MCM-41。结果表明:Ba/TiO2/MCM-41是一种比表面积高达341.2m2/g的介孔材料，主要晶相为锐钛矿相，比P25有更强的紫外光吸收。将Ba/TiO2/MCM-41用于光催化氧化水中的对硝基苯甲酸，当催化剂投加量为0.5g/L，对硝基苯甲酸初始pH为4、浓度为2×10-4mol/L时，紫外光照30min后，对硝基苯甲酸降解率达到96.0%。用紫外光谱、红外光谱和高效液相色谱分析对硝基苯甲酸降解前后的变化，发现随着光照时间延长，苯环上的硝基、羧基吸收峰逐渐减弱；对硝基苯甲酸首先被降解为一些中间小分子产物，随着反应进行，小分子物质也逐渐被降解。

 References

[1]  陈洁;宋启泽,有机波谱分析,北京:北京理工大学出版社,2007.
[2]  JeanMarie;Herrmann;Chantal Guillard;Jean Disdier,New industrial titania photocatalysts for the solar demxi-fication of water containing various pollutants,Applied Ca-talysis B:Environmental,2002(3).
[3]  Gordon S.Shephard;Sonja Stockenstrom;David de Villi- ers,Degradation of microcystin toxins in a falling film photocatalytic reactor with immobilmed titanium diox- ide catalyst,Water Research,2002(5 -).
[4]  冯良荣;吕绍洁;邱发礼.过渡元素掺杂对纳米TiO2光催化性能的影响[J].化学学报,2002(3)
[5]  姜安玺;徐桂芹;相会强.光催化剂纳米TiO2的固定化技术研究进展[J].哈尔滨建筑大学学报,2002(4)
[6]  Visinescu C.M;Sanjines R;Levy F,Photocata- lytic degradation of acetone by Ni-doped titania thin films prepared by dc reactive sputtering,Applied Catalysis B:Environmental,2005(5).
[7]  Khan S.U.M;AI-Shahry M;Ingler W.B,Efficient photochemical water splitting by a chemically modified n- TiO2,Science,2002(5590).
[8]  Yinhua Jiang;Yueming Sun;Hui Liu,Solar photo-catalytic decolorization of C I Basic Blue 41 in all aque-ous suspension of TiO2-ZnO,Dyes and Pigments,2000(2).
[9]  徐顺,杨鹏飞,杜宝石.掺杂TiO2的光催化性能研究进展[J].化学研究与应用,2003(2)doi:10.3969/j.issn.1004-1656.2003.02.003
[10]  唐培松,王民权,王智宇.半导体TiO2光催化剂及其有机光敏化研究进展[J].材料导报,2003(10)
[11]  Wang J;Xie Y;Zhang Z,Application of TiO2/ Er3+ :Y3A15 On composite to photo-degrade acid red B dye under sun light irradiation,Russian Journal of Physical Chemistry A,2009(13).
[12]  Wang Y.J;Li B;Wei P.H,Preparation of TiO2/glass film by sol-gel method and there with photocat- alytic degradation of rhodamine B,Chinese Journal of Ap- plied Chemistry,2001(3).
[13]  孙蕊,陈静,郭微.MCM-41中孔分子筛研究进展[J].精细石油化工进展,2005(6)doi:10.3969/j.issn.1009-8348.2005.06.011
[14]  汪杰;涂永善;杨朝合.以催化油浆为增孔剂的MCM-41介孔分子筛的合成[J].中国石油大学学报(自然科学版),2003(5)doi:10.3969/j.issn.0253-2409.2003.05.016
[15]  Kormann C;Bahnemann D.W;Hoffman M.R,Band strengths of fundamentals and overtones of the CF and CH chromophores in CHD2F,Chemical Physics Letters,1988(8).
[16]  张美红;丁士文;王振兴.化学自组装合成sn掺杂的纳米TiO2介孔材料及其光催化性能[J].中国科学(B辑:化学),2005(3)doi:10.3321/j.issn:1006-9240.2005.03.005
[17]  徐如人;庞文琴;于吉红,分子筛与多孔材料化学,北京:科学出版社,2004.
[18]  Ku Y;Leu R;Lee K.C,Decomposition of 2-chlorphe- nol in aqueous solution by UV irradiation with the pres- ence of titanium dioxide,Water Research,1996(9).

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