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Preparation and visible-light photocatalysis of hollow rock-salt TiO 1-xNx nanoparticles

Title
Preparation and visible-light photocatalysis of hollow rock-salt TiO 1-xNx nanoparticles
Authors
Seo S.G.Park C.-H.Kim H.-Y.Nam W.H.Jeong M.Choi Y.-N.Lim Y.S.Seo W.-S.Kim S.-J.Lee J.Y.Cho Y.S.
Ewha Authors
김성진
SCOPUS Author ID
김성진scopus
Issue Date
2013
Journal Title
Journal of Materials Chemistry A
ISSN
2050-7488JCR Link
Citation
vol. 1, no. 11, pp. 3639 - 3644
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A simple method for the preparation of hollow rock-salt TiO 1-xNx nanoparticles and their visible-light photocatalytic activities are presented. By thermal annealing of TiO2 nanoparticles under NH3/N2 gas flow at 800 °C, a rock-salt TiO phase was achieved far below its transition temperature to a monoclinic TiO phase (1250 °C). The composition of the nanoparticles was revealed to be Ti0.7(O0.67N0.33)1 by detailed structural and compositional characterizations, and their structural stability was critically determined by the formation of vacancies and the incorporation of N. The hollow rock-salt TiO1-xNx nanoparticles presented efficient visible-light photocatalytic activity, and their origins were discussed. © 2013 The Royal Society of Chemistry.
DOI
10.1039/c3ta00936j
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자연과학대학 > 화학·나노과학전공 > Journal papers
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