Promoting effects of lanthanum on the catalytic activity of Au/TiO2 nanotubes for CO oxidation

被引：23
作者：
Zhang, Ping [1 ,2 ]
Guo, Jiuli [1 ,2 ]
Zhao, Peng [1 ,2 ]
Zhu, Bolin [1 ,2 ]
Huang, Weiping [1 ,2 ]
Zhang, Shoumin [1 ,2 ]
机构：
[1] Nankai Univ, Key Lab Adv Energy Mat Chem MOE, Tianjin Key Lab Met & Mol Based Mat Chem, Tianjin 300071, Peoples R China
[2] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 16期
基金：
中国国家自然科学基金;
关键词：
SUPPORTED GOLD CATALYSTS; FORMATION MECHANISM; TIO2; NANOTUBES; NANOPARTICLES; TEMPERATURE; PHOTOCATALYSTS; DEGRADATION; PERFORMANCE;
D O I：
10.1039/c4ra14133d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Lanthanum-modified TiO2 nanotube (NT) supported gold catalysts were prepared. The linear relationship between actual and nominal lanthanum concentrations was found. The possible formation mechanism of La-modified TiO2 NTs was suggested. The effects of calcination temperature, La concentration and gold loading on the catalytic activity for CO oxidation were investigated. Au/La2O3-TiO2NTs (Au: 4.18%, La: 1.62%) calcined at 300 degrees C could completely convert CO at 30 degrees C. T-100% of La-free catalyst was 60 degrees C. The catalytic activity of Au/TiO2-NTs could be improved by modification with lanthanum.
引用
收藏
页码：11989 / 11995
页数：7
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