Synthesis and characterization of photosensitive TiO2 nanorods by controlled precipitation route

被引:0
|
作者
D. P. Dubal
D. S. Dhawale
A. M. More
C. D. Lokhande
机构
[1] Shivaji University,Department of Physics, Thin Film Physics Laboratory
来源
Journal of Materials Science | 2011年 / 46卷
关键词
TiO2; Water Contact Angle; TiO2 Film; TiO2 Thin Film; TiO2 Nanorods;
D O I
暂无
中图分类号
学科分类号
摘要
Nanocrystalline TiO2 thin films have been successfully synthesized by controlled precipitation route. These films are further annealed at 623 K for 2 h. The change in structural, morphological, optical, and wettability properties are studied by means of X-ray diffraction (XRD), Fourier transform infrared spectrum (FTIR), scanning electron microscopy (SEM), optical absorption, and contact angle measurement. From the XRD pattern it is clear that the as-grown TiO2 films are amorphous in nature which becomes polycrystalline after annealing. The FTIR study reveals the formation of TiO2 compound. Scanning electron micrographs shows that the as-grown TiO2 film consists of agglomerated nanograins well covered to the substrate surface which gets converted into vertical nanorods after annealing. As-deposited and annealed TiO2 films showed hydrophilic behavior as water contact angles were 24° and 32°, respectively. The optical absorption study reveals the small red shift due to annealing and attributed to grain size. The annealed TiO2 film showed conversion efficiency of 0.037% in photoelectrochemical cell with 1 M NaOH electrolyte.
引用
收藏
页码:2288 / 2293
页数:5
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