Journal
NANOTECHNOLOGY
Volume 20, Issue 28, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0957-4484/20/28/285707
Keywords
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Funding
- Natural Science Foundation of China [50671100, 10604055]
- National Basic Research Program of China (973 Program) [2007CB936604]
- Scientific Research Starting Foundation of Nantong University
- Natural Science Foundation of Anhui Province for Excellent Youth [08040106823]
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TiO2 nanoparticles were prepared by one-step pulsed laser ablation of a titanium target immersed in a poly-(vinylpyrrolidone) solution at room temperature. The products were systematically characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy and x-ray photoelectron spectroscopy (XPS). The results indicated that the rutile TiO2 nanocrystalline particles were one-step synthesized at room temperature and the mean size in diameter is about 50 nm with a narrow size distribution. A probable formation process was proposed on the basis of the microstructure and the instantaneous plasma plume induced by the laser. Photocatalytic activity was monitored by degradation of a methylene blue solution. The as-prepared rutile TiO2 nanoparticles demonstrate a good photocatalytic performance. This work shows that pulsed laser ablation in liquid media is a good method to synthesize some nanosized materials which are difficult to produce by other conventional methods.
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