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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 3    December 2009

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Fabrication and characteristics of rutile TiO2 nanoparticles induced by
laser ablation
LIU Pei-sheng(刘培生)1,2,3,4,CAI Wei-ping(蔡伟平)2,WAN Li-xi(万里兮)3,
SHI Ming-da(石明达)4, LUO Xiang-dong(罗向东) 1, JING Wei

1. Jiangsu Key Laboratory of ASCI Design, Nantong University, Nantong 226019, China;
2. Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;
3. Institute of Microelectronics, Chinese Academy of Sciences, Bejing 100029, China;
4. Nantong Fujitsu Microelectronics Co. Ltd, Nantong 226006, China

Abstract:The laser ablation technique was employed to prepare TiO2 nanoparticles by pulsed laser ablation of a titanium target immersed in the poly-(vinylpyrrolidone) solution using wavelength of 1 064 nm. The as-prepared products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results indicate that the rutile TiO2 nanoparticles are synthesized at room temperature and the average size is about 35 nm with narrow size distribution. A possible formation mechanism was discussed and the UV-vis absorption and photoluminescence were measured. The optical study shows that rutile nanoparticle possesses direct optical transition with band gap of 3.15 eV.

 

Key words: TiO2 rutile; laser ablation; nanoparticles; photoluminescence

ISSN 1672-7029
CN 43-1423/U

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