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Structural characterization of TiO2 ultrafine particles

Published online by Cambridge University Press:  31 January 2011

Yingchun Zhu
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
Tiao Liu
Affiliation:
Solid State Physical Laboratory, Henan University, Kaifeng, 475001, People's Republic of China
Chuanxian Ding
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
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Abstract

Four samples of TiO2 ultrafine particles (UFP) were obtained through different processes. The structure of TiO2 ultrafine particles and the factors influencing the structure were investigated with Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and x-ray diffraction (XRD). Both Raman spectra and x-ray diffractograms show the similar regularity of the phase transformation among the four samples. The observed bimodal lineshape-structure in the Raman spectra is attributed to the intragrain and grain-boundary components of TiO2 UFP. The crystal structure of TiO2 UFP is found to be distorted by the surface structure such as OH and OCH2CH3 groups coordinated on the surface of TiO2 UFP.

Type
Articles
Copyright
Copyright © Materials Research Society 1999

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