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Bifunctional TiO2 Catalysts for Efficient Cr(VI) Photoreduction Under Solar Light Irradiation Without Addition of Acids
Fu-cheng Shi,Wen-dong Wang,Wei-xin Huang*
Author NameAffiliationE-mail
Fu-cheng Shi CAS Key Laboratory of Materials for Energy Conversion, Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Wen-dong Wang CAS Key Laboratory of Materials for Energy Conversion, Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China  
Wei-xin Huang* CAS Key Laboratory of Materials for Energy Conversion, Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China huangwx@ustc.edu.cn 
Abstract:
Bifunctional TiO2 photocatalysts co-doped with nitrogen and sulfur were prepared by the controlled thermal decomposition of ammonium titanyl sulfate precursor. They have both photocatalytic activity and Br?nsted acidity, and thus are active in the photoreduction of Cr(VI) under solar light irradiation without the addition of acids. The activity is superior to that of Degussa P25 in the acidified suspension at the same pH adjusted by H2SO4.
Key words:  Cr(VI) photocatalytic reduction, TiO2, Br?nsted acidity, Bifunctional catalyst
FundProject:
在太阳光照射和不外加酸下TiO2双功能催化剂光催化还原Cr(VI)离子
石富城,汪文栋,黄伟新*
摘要:
利用硫酸氧钛铵的热分解控制制备了氮和硫共同掺杂的TiO2双功能光催化剂. TiO2双功能光催化剂同时具备光催化性能和较强的Br?nsted酸性,因此能够在太阳光照射和不外加酸下有效光催化还原Cr(VI)离子. 其光催化还原Cr(VI)离子的活性要优于通过外加硫酸调节到等同pH值和太阳光照射下P25光催化剂光催化还原Cr(VI)离子的活性.
关键词:  光催化还原Cr(VI)离子,TiO2,Br?nsted酸性,双功能催化剂
DOI:10.1088/1674-0068/25/02/214-218
分类号: