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Formation of anatase TiO2 nanoparticles by simple polymer gel technique and their properties

✍ Scribed by S.N. Karthick; K. Prabakar; A. Subramania; Ji-Tae Hong; Jin-Ju Jang; Hee-Je Kim

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
791 KB
Volume
205
Category
Article
ISSN
0032-5910

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✦ Synopsis

Pure anatase nano-TiO 2 powders were successfully prepared by a simple polymer gel technique using poly-(vinylpyrrolidone) (PVP) as the polymer. The products were systematically characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HR-TEM), UV-visible spectroscopy and photoluminescence studies. The XRD and XPS results indicate that the prepared powder had a pure anatase nano-TiO 2 structure with lattice parameters a and c of 0.378 and 0.951 nm, respectively. The particle size analysed by TEM ranged between 7 and 12 nm. The maximum UV absorption for the TiO 2 nanoparticles was below 400 nm with an estimated direct band gap (Eg) of 3.55 eV. The photoluminescence peaks of the nanopowder were observed at 391 and 468 nm. The nanosized materials were produced using a simple and cost effective polymer gel technique.

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