掺杂铂的二氧化钛薄膜光催化性能Photocatalysis properties of Pt doped TiO2 film
白爱英,梁伟,云洁,张瑜,薛晋波
摘要(Abstract)：
用溶胶凝胶法制备掺铂量从0.2 wt%~1.0 wt%的二氧化钛溶胶,在载玻片上以旋涂法制成薄膜,并经823 K保温2 h热处理,用XRD、SEM、TEM、UV-vis等手段,对其组织结构和光学性能进行分析测试;通过紫外光下降解亚甲基蓝溶液测试薄膜样品的光催化活性。结果表明:该方法制得的二氧化钛全部为锐钛矿晶型,颗粒大小较均匀,平均粒径为20~40 nm。掺铂量0.2 wt%时,二氧化钛的本征吸收边从350 nm红移至400 nm,紫外光照射6 h后,亚甲基蓝溶液的降解率是纯二氧化钛的1.6倍。
关键词(KeyWords)： 溶胶凝胶法;掺铂;薄膜;光催化活性
基金项目(Foundation): 山西省自然科学基金(2006011051);; 山西省归国留学基金(2007-25);; 山西省重点实验室开放基金(2008012013-7);; 太原市2009年大学生创新创业专项项目(09122018)
作者(Author): 白爱英,梁伟,云洁,张瑜,薛晋波
DOI: 10.13289/j.issn.1009-6264.2010.02.001
参考文献(References)：
- [1]Fujishima A,Rao TN,Truk D A.Titanium dioxide photocatalysis[J].J Photochem Photobiol C,2000(1):1-21.
- [2]Li G Q,Liu C Y,Liu Y.Different effects of ceriumions doping on properties of anatase and rutile TiO2[J].Appl Surf Sci,2006,253:2481-2486.
- [3]Ishibai Y,Sato J,Akita S,et al.Photocatalytic oxidation of NOxby Pt-modifiedTiO2under visible light irradiation[J].J Photochem Photobiol A,2007,188:106-111.
- [4]Kumar S,Fedorov AG,Gole J L.Photodegradation of ethylene using visible light responsive surfaces prepared from titania nanoparticle slurries[J].Appl Catal A,2005,57:93-107.
- [5]He C,Xiong Y,Zhu X,et al.A platinised TiO2film with both photocatalytic andnon-photocatalytic activities towards the oxidation of formic acid[J].Appl Catal A,2004,275:55-60.
- [6]Kamat P V,Flumiani M,Dawson A.Metal-metal and metal-semiconductor composite[J].Colloid Surf A,2002,202:269-279.
- [7]Li F B,Li X Z.The enhancement of photo degradation efficiency using Pt-TiO2catalyst[J].Chemosphere,2002,48:1103-1111.
- [8]Yasuro Ikuma,Hiroaki Bessho.Effect of Pt concentration on the production of hydrogen by a TiO2photo catalyst[J].Int J Hydrogen Energ,2007,32:2689-2692.
- [9]Takeshi S,Naoto K.Preparation of Pt/TiO2nanocomposite thin films by pulsed laser deposition and their photo electro chemical behaviors[J].JPhotochem Photobiol A,2001,145:11-16.
- [10]Amy L,Lu G Q,John T,et al.The bimetallic Pt/Mo(110)surface:Structural and CO chemisorption studies[J].Surface Science,1993,294(3):284-296.
- [11]赵壁英,吴念祖,卜乃瑜,译.金属的化学吸附和催化作用导论[M].北京:北京大学出版社,1991.
- [12]Ashokkumar M.An overviewon semiconductor particulate systems for photoproduction of hydrogen[J].Int J Hydrogen Energ,1998,23(6):427-438.
- [13]Liu J B,Crittenden John C,Hand David W,et al.Regeneration of adsorbents using heterogeneous photo catalytic oxidation[J].Journal ofEnvironmental Engineering,1996,3:24-29.
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