Effect of annealing temperature on the phase transition, structural stability and photo-electrochemical performance of TiO2 multi-leg nanotubes

被引：27
作者：
Rambabu, Y. [1 ]
Jaiswal, Manu [1 ]
Roy, Somnath C. [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Phys, Chennai 600036, Tamil Nadu, India
来源：
CATALYSIS TODAY | 2016年 / 278卷
关键词：
TiO2; nanotubes; Photoelectrochemical; Photocurrent; Phase transition; RUTILE TIO2; SOLAR-CELLS; ARRAYS; ANATASE; TRANSFORMATION; WATER; NANOPARTICLES; SCATTERING; DIOXIDE; MODEL;
D O I：
10.1016/j.cattod.2016.01.016
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this report we study the effect of annealing temperature on the structural stability, phase transformation and photo-electrochemical performance of TiO2 multi-leg nanotubes. Multi-leg nanotubes were synthesized using electrochemical anodization method, and as synthesized nanotubes were annealed in air at the temperatures ranging from 500 to 900 degrees C.We observed that multi-leg morphology is preserved upto 900 degrees C and a dominant rutile phase is observed at this temperature. X-ray diffraction and Raman spectra measurements were carried out to study the crystallite size, phase transformation and phonon confinement effects. The multi-leg nanotubes annealed at 900 degrees C shows enhanced photo-electrochemical performance; this is attributed to mixed phase, increase in crystallite size and decrease in defects. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：255 / 261
页数：7
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