Development of composite photocatalysts for the degradation of chlorinated organic compounds

用于降解氯化有机化合物的复合光催化剂的开发

• 批准号: 23550227
• 负责人: YAMAZAKI SUZUKO
• 金额: $ 3.41万
• 依托单位: Yamaguchi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23550227/
• 关键词: 光触媒; 複合型光触媒; 酸化チタン; 酸化タングステン; 有機塩素化合物; 環境浄化; 環境材料; 触媒・化学プロセス; 複合材料・物性

Photocatalytic degradation of trichloroethylene (TCE) in TiO2 aqueous sol was enhanced by mixing with WO3 sol prepared from aqueous Na2WO4 solution and the best performance was obtained with TiO2:WO3 molar ratio of 2:1. The mixed sol was dried and calcined to form TiO2/WO3 composites and the photocatalytic activity was examined for the degradation of gaseous TCE. The conversion of TCE on the TiO2/WO3 composites was lower than that on TiO2, which was attributable to the low crystallinity of WO3. When the WO3 sol was prepared from ammonium paratungstate, monoclinic WO3 was formed by calcination at 500 oC. This WO3 sol was mixed with the TiO2 sol, dried and calcined. The obtained TiO2/WO3 composites showed higher conversion of TCE than that on TiO2.

以Na 2 WO 4水溶液制备的WO 3溶胶为载体，与TiO 2水溶胶混合，对三氯乙烯（TCE）的光催化降解有较好的促进作用，当TiO 2：WO 3摩尔比为2：1时，光催化降解效果最好。将混合溶胶干燥、煅烧后制备TiO 2/WO 3复合材料，考察其光催化降解气态三氯乙烯的活性。TCE在TiO 2/WO 3复合材料上的转化率低于在TiO 2上的转化率，这归因于WO 3的低结晶度。当以仲钨酸铵为原料制备WO 3溶胶时，在500 ℃下煅烧可形成单斜相WO 3。将该WO 3溶胶与TiO 2溶胶混合，干燥并煅烧。所得到的TiO 2/WO 3复合材料表现出更高的TCE转化率比TiO 2。

项目成果

酸化チタン-酸化タングステンハイブリッド系におけるトリクロロエチレンの光触媒分解反応

二氧化钛-氧化钨杂化体系中三氯乙烯的光催化分解反应

• 发表时间: 2011
• 作者: 瀬山智晶;安達健太;山﨑鈴子
• 通讯作者: 山﨑鈴子

Kinetics of photocatalytic degradation of trichloroethylene in aqueous colloidal solutions of TiO2 and WO3 nanoparticles

• DOI: 10.1016/j.jphotochem.2012.09.001
• 发表时间: 2012-12-01
• 期刊: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
• 影响因子: 4.3
• 作者: Seyama, Tomoaki;Adachi, Kenta;Yamazaki, Suzuko
• 通讯作者: Yamazaki, Suzuko

Photocatalytic activity of aqueous WO3 sol for the degradation of Orange II and 4-chlorophenol

• DOI: 10.1016/j.apcata.2012.12.038
• 发表时间: 2013-03
• 期刊: Applied Catalysis A-general
• 影响因子: 5.5
• 作者: S. Yamazaki;T. Yamate;Kenta Adachi