Enhanced photocatalytic degradation of rutile/anatase TiO2 heterojunction nanoflowers

被引:60
作者
Xu, Haifeng [1 ,2 ]
Li, Guang [1 ]
Zhu, Guang [2 ]
Zhu, Kerong [1 ]
Jin, Shaowei [1 ,2 ]
机构
[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China
[2] Suzhou Univ, Sch Mech & Elect Engn, Suzhou 234000, Peoples R China
基金
中国国家自然科学基金;
关键词
Nanoflowers; Mixed phases; Hydrothermal; Photocatalysis; ANATASE TIO2; SOLAR-CELLS; RUTILE; PERFORMANCE; NANORODS; FACETS;
D O I
10.1016/j.catcom.2015.01.001
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
Rutile/anatase TiO2 heterojunction nanoflowers were prepared via a facile one-step hydrothermal approach using titanium tetrachloride and urea as the raw materials, cetyl trimethyl ammonium bromide (CAB) as the template. The prepared TiO2 nanoflowers were characterized by XRD, SEM, TEM and BET analyses. The photocatalytic performance of the as-prepared TiO2 samples for methyl blue degradation under simulated solar light was investigated. TiO2 heterojunction nanoflowers with mixed rutile/anatase phase (prepared with 3 mmol CTAB) give the highest photocatalytic activity. In addition, TiO2 nanoflowers show excellent stability after 9 cycles under the same conditions. These results suggested that the mixed phase anatase/rutile TiO2 heterojunction nanoflowers have great potential for the future photodegradation of real dye waste water. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:52 / 56
页数:5
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