One-pot low-temperature synthesis of TiO2 nanowire/rGO composites with enhanced photocatalytic activity

被引:11
|
作者
Xing, Huan [1 ]
Wen, Wei [2 ]
Wu, Jin-Ming [1 ]
机构
[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Hainan Univ, Coll Mech & Elect Engn, Haikou 570228, Peoples R China
来源
RSC ADVANCES | 2016年 / 6卷 / 96期
关键词
GRAPHENE-BASED PHOTOCATALYSTS; DOMINANT; 001; FACETS; NANOTUBE ARRAYS; MESOPOROUS TIO2; ION BATTERIES; SOLAR-CELLS; OXIDE; NANOCOMPOSITES; PERFORMANCE; NANOSHEETS;
D O I
10.1039/c6ra16484f
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In situ growth of TiO2 nanowires on reduced graphene oxide (rGO) was achieved using a facile solution-based reaction at a relatively low temperature of 80 degrees C and in an open atmosphere, followed by a final calcination in air at 550 degrees C. The additive of GO into the Ti-H2O2 reactants led to a much reduced rutile/anatase ratio in the resultant TiO2 nanowires. The TiO2/rGO hybrid, which contained ca. 0.18 wt% rGO, exhibited a reduced band gap of 2.83 eV. The reaction rate constant was 5.5 times that of the pure TiO2 nanowires. The enhanced photocatalytic efficiency was attributed to the appropriate anatase/rutile mixture, narrowed band gap, and increasing specific surface area. The present work provides a low temperature one-pot synthesis of one-dimensional TiO2 nanowires on rGO surfaces with enhanced photocatalytic performance, which may find other applications in fields of solar cells, energy storage, and sensors.
引用
收藏
页码:94092 / 94097
页数:6
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