✦ LIBER ✦

Investigation on the Surface State of TiO2 Ultrafine Particles by Luminescence

✍ Scribed by Ying Chun Zhu; Chuan Xian Ding

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 159 KB
Volume: 145
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1999.8292

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✦ Synopsis

The surface states of TiO 2 ultra5ne particles (UFP) are characterized by luminescence spectra and UV-absorption spectra. In order to con5rm whether the emission at 475 nm originates from the surface state, the as-prepared TiO 2 UFP are plasma-treated. The results indicate that surface states related to the TiOH and TiOC 2 H 5 groups play an important role in the emission and UV-absorption of TiO 2 UFP. Both quantum con5nement and dielectric con5nement e4ects have been used for discussing the emission and UV-absorption properties of TiO 2 UFP.

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