Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 181, Issue 1, Pages 130-136Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2007.11.012
Keywords
nitrogen-doped titania; surface structure; microwave synthesis; photocatalysis; X-ray photoclectron spectroscopy
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Both substitutional and interstitial nitrogen-doped titanium dioxides (N-TiO2) were prepared. Their surface states were clarified by XPS spectra of N 1s, O 1s and Ti 2p. The results of photocatalysis show that both substitutional and interstitial N impurities greatly enhance the photoactivity of TiO2 in visible light. Moreover, the visible light activity of interstitial N-doped TiO2 is higher than that of substitutional N-doped TiO2. The microwave synthesis presented in this paper is a promising and practical method to produce interstitial nitrogen-doped photocatalysts with high visible light activity. (c) 2007 Elsevier Inc. All rights reserved.
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