Template-Free Synthesis and Photocatalytic Application of Rutile TiO2 Hierarchical Nanostructures

被引:65
作者
Ge, M. [1 ]
Li, J. W. [1 ]
Liu, L. [1 ]
Zhou, Z. [2 ,3 ]
机构
[1] Nankai Univ, Tianjin Key Lab Environm Remediat & Pollut Contro, Tianjin 300071, Peoples R China
[2] Nankai Univ, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China
[3] Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China
关键词
AZO-DYE; TEMPERATURE SYNTHESIS; HYDROGEN-PEROXIDE; DEGRADATION; OXIDATION; SURFACES; NANORODS; ORANGE; PHOTOOXIDATION; FABRICATION;
D O I
10.1021/ie1023113
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A simple template-free hydrothermal method was employed to synthesize flower-shaped single-crystal rutile TiO2 hierarchical nanostructures without calcination process. Scanning electron microscope and transmission electron microscope images show that rutile TiO2 nanostructures with diameters of 1-1.5 mu m are composed of nanorods with a wimble shape. The band gap of the as-prepared rutile TiO2 is about 3.02 eV by ultraviolet-visible absorption spectrum. The photocatalytic performance of the as-obtained samples as catalysts for Rhodamine B (RhB) degradation under simulated solar light was greatly enhanced with the assistance of a small amount of H2O2. In the H2O2-containing system, the as-prepared rutile TiO2 photocatalyst was more efficient in the photodegradation of RhB than commercial P25. The stability and recycle of the rutile TiO2/H2O2 system were also investigated.
引用
收藏
页码:6681 / 6687
页数:7
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