Hydrothermal synthesis and photocatalytic performance of metal-ions doped TiO2

被引：83
作者：
Feng, Huajun [1 ]
Zhang, Min-Hong [1 ]
Yu, Liya E. [1 ]
机构：
[1] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore
来源：
APPLIED CATALYSIS A-GENERAL | 2012年 / 413卷
关键词：
Metal-ions doped TiO2; Photocatalytic performance; Solar-light irradiation; Hydrothermal synthesis; VISIBLE-LIGHT RESPONSE; DEGRADATION; SYSTEMS;
D O I：
10.1016/j.apcata.2011.11.014
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Metal-ions doped TiO2 (M-TiO2) were synthesized using a hydrothermal method with a post-annealing process, including individual Ag+, Cu2+, Mn2+, Ce3+, Fe3+ and Zr4+ ions. Physical properties of the synthesized M-TiO2 were characterized including XRD pattern, BET surface area, diffuse reflectance spectra and visible-light photoactivity tests. Total photocatalytic performances of M-TiO2 were evaluated by degrading rhodamine b under whole solar-light irradiation with manganese-ions doped TiO2 (Mn-TiO2) showing the highest degradation efficiency. Compared to crystalline structure and visible-light photoactivity, BET surface area of M-TiO2 particles exhibits the most significant impacts, showing a positive correlation with the total photocatalytic performance of M-TiO2. Total photocatalytic efficiencies of Mn-TiO2 were further optimized through synthesis with 3% of Mn doping concentration, 180 degrees C of hydrothermal treatment and 450 degrees C of post-annealing temperature. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：238 / 244
页数：7
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