Synthesis of anatase TiO2 nanowires by modifying TiO2 nanoparticles using the microwave heating method

被引：26
作者：
Li, Li [1 ]
Qin, Xiaomei [1 ]
Wang, Guobing [1 ]
Qi, Limin [1 ]
Du, Guoping [1 ]
Hu, Zhijuan [1 ]
机构：
[1] Shanghai Normal Univ, Dept Phys, Shanghai 200234, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 18期
关键词：
Microwave heating method; TiO2; Nanowires; Nanoparticles; Microstructures; SENSITIZED SOLAR-CELLS; HYDROTHERMAL SYNTHESIS; TITANIA NANOWIRES; NANOTUBES; GROWTH; NANOSTRUCTURES; MECHANISM; NANORODS; ARRAYS;
D O I：
10.1016/j.apsusc.2011.04.073
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：
Anatase TiO2 nanowires with a diameter of 5-10 nm and length of 500nmto 2 mu m have been successfully synthesized by modifying TiO2 nanoparticles (P25) using the microwave heating method. The microwave power, reaction pressure, and reaction time for the synthesis of TiO2 nanowires were 500 W, 0.5-3.0MPa (corresponding to a temperature range of 175-260), and 40-70 min, respectively. X-ray diffraction (XRD), field-emission scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and the BET techniques were used to investigate the phase structures, morphologies, and specific surface areas of the TiO2 nanowires. The effects of reaction time, pressure, and different post-treatment processes on the microstructures of TiO2 nanowires were discussed. It has been shown that the microwave heating method is efficient in transforming TiO2 nanoparticles to anatase TiO2 nanowires. (C) 2011 Elsevier B. V. All rights reserved.
引用
收藏
页码：8006 / 8012
页数：7
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