Effect of annealing temperature on Raman spectra of TiO2 nanoparticles

被引：137

作者：

Mathpal, Mohan Chandra ^{[1
]}

Tripathi, Anand Kumar ^{[1
,2
]}

Singh, Manish Kumar ^{[1
,3
]}

Gairola, S. P. ^{[4
]}

Pandey, S. N. ^{[1
]}

Agarwal, Arvind ^{[1
]}

机构：

[1] Motilal Nehru Natl Inst Technol, Dept Phys, Allahabad 211004, Uttar Pradesh, India

[2] NRC, DITS, Allahabad 211013, Uttar Pradesh, India

[3] CSIC, Natl Phys Lab, Dept Sci & Technol, Ctr Biomol Elect,Biomed Instrumentat Sect, New Delhi 110012, India

[4] UGEPV, Nanital, Uttarakhand, India

来源：

CHEMICAL PHYSICS LETTERS | 2013年 / 555卷

关键词：

RUTILE TRANSFORMATION; PHASE-TRANSFORMATION; OPTICAL-PROPERTIES; ANATASE; DEPENDENCE; LUMINESCENCE;

D O I：

10.1016/j.cplett.2012.10.082

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：

Sol-gel method has been used to prepare pure anatase and anatase-rutile mixed phase TiO2 nanoparticles by calcination at different temperatures. The influences of calcination temperature on structure, band gap, luminescence properties and Raman spectra have been investigated. A clear evidence of structural transformation from pure anatase to anatase-rutile mixed phase structures has been confirmed by X-ray diffraction (XRD). Photoluminescence spectroscopy (PL) shows that the change in structure is also responsible for exhibiting the change in PL intensity. The Raman spectroscopy exhibits the anomalous behavior for band broadening and shifting of Raman bands with increasing crystallite size. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：182 / 186

页数：5

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