A Study on Preparation and Characteristic of La2O3/ZnO/TiO2 Coupled Photocatalyst.

摘要：

La2O3/ZnO/TiO2 coupled photocatalysts were prepared by sol-gel-in-situ-formed method. Being a model reaction, the photocatalytic degradation of reactive brilliant red K-2BP in La2O3/ZnO/TiO2 nanopowder suspension irradiated by UV-lamp was investigated. As results, the addition of La2O3 and ZnO toTiO2 enhanced its photocatalytic activity further, and the optimum concentration of ZnO and La2O3 was 20％、0.50％, respectively. The best degradation efficiency of reactive brilliant red K-2BP by coupled photocatalysts were acquired under follow experimental conditions: calcination at 500℃ for 2h, Amount of coupled photocatalysts 4.00g·L-1, air flow rate 800mL·min-1 and initial pH3.12. The photocatalytic degradation of reactive brilliant red K-2BP by La2O3/ZnO/TiO2 was experimentally demonstrated to follow the Langmuir-Hinshelwood kinetic model, and the reaction rate constant 11.5mg·(L·min)-1 and the adsorption constant(2.88×10-2L·mg-1) were determined.

关键词： La2O3/ZnO/TiO2 coupled photocatalyst photocatalytic reactive brilliant red K-2BP

作者: 王理明 姚秉华 程刚 仝攀瑞 李艳

作者单位: 西安理工大学应用化学系 陕西 西安 710048;西安工程大学环境与化学工程学院 陕西 西安 710048 西安理工大学应用化学系 陕西 西安 710048 西安工程大学环境与化学工程学院 陕西 西安 710048

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）