Effect of Preparation Conditions on Visible Photocatalytic Activity of Titania Synthesized by Solution Combustion Method  

作　　者：程友萍 孙红旗 金万勤 徐南平 

机构地区：[1]Membrane Science and Technology Research Center, Nanjing University of Technology

出　　处：《Chinese Journal of Chemical Engineering》2007年第2期178-183,共6页中国化学工程学报（英文版）

基　　金：Supported by the Key Laboratory of Material-Oriented Chemical Engineering of Jiangsu Province and Ministry of Education.

摘　　要：Titania catalysts were synthesized by a solution combustion method （SCM）. Photodegradation of 4-chlorophenol （4-CP） using the synthesized catalysts was studied under both visible light （λ≥420nm） and sunlight irradiation. The effect of preparation conditions on photocatalytic activities of the synthesized catalysts was investigated. The optimal photocatalytic activity of the catalyst （denoted as A1 ） was obtained under the following synthesis conditions： ignition temperature of 350~C, fuel ratio （ φ） of 1 and calcination time of lh. The degradation and mineralization ratio of 4-CP were 78.2% and 53.7% respectively under visible light irradiation for 3h using catalyst A1. And the catalyst A1 also showed high photocatalytic activity under sunlight irradiation.Titania catalysts were synthesized by a solution combustion method (SCM). Photodegradation of 4-chlorophenol (4-CP) using the synthesized catalysts was studied under both visible light (λ≥420nm) and sunlight irradiation. The effect of preparation conditions on photocatalytic activities of the synthesized catalysts was inves-tigated. The optimal photocatalytic activity of the catalyst(denoted as A1)was obtained under the following syn-thesis conditions: ignition temperature of 350℃, fuel ratio (φ ) of 1 and calcination time of 1h. The degradation and mineralization ratio of 4-CP were 78.2% and 53.7% respectively under visible light irradiation for 3h using catalyst A1. And the catalyst A1 also showed high photocatalytic activity under sunlight irradiation.

关 键 词：TiO2 solution combustion method PHOTODEGRADATION visible light 

分 类 号：O644.1[理学—物理化学] O614.411[理学—化学]