Morphology and phase changes in laser-ablated TiO2 particles during thermal annealing

被引：14

作者：

Pugachevskii, M. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Mat Sci, Khabarovsk Sci Ctr, Far E Branch, Khabarovsk 680042, Russia

来源：

TECHNICAL PHYSICS LETTERS | 2012年 / 38卷 / 04期

关键词：

ANATASE PHASE; TITANIA; TRANSFORMATION; DIOXIDE;

D O I：

10.1134/S1063785012040128

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A method for obtaining titanium dioxide (TiO2) nanoparticles by laser ablation has been developed. Pulsed laser irradiation at an intensity of 10(9) W/m(2) leads to sputtering of titanium dioxide in the form of particles with dimensions within 10-50 nm. The phase composition and morphology of obtained nanoparticles have been studied by the methods of transmission electron microscopy and X-ray diffraction. Thermal annealing above 600A degrees C leads to an increase in the average particle size and induces the structural transition of titanium dioxide from anatase to rutile modification. Quantitative dependences of the particle size and phase composition on the annealing temperature are established. It is established that, using the laser ablation method, it is possible to obtain the anatase phase of TiO2 with increased thermal stability.

引用

页码：328 / 331

页数：4

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