Synthesis and characterization of substitutional and interstitial nitrogen-doped titanium dioxides with visible light photocatalytic activity

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.11.012· OSTI ID:21043868

Lingfeng, Cai; Hao, Yu; Hongjuan, Wang; Jian, Yang ^[1]

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1. School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640 (China)

Both substitutional and interstitial nitrogen-doped titanium dioxides (N-TiO{sub 2}) 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 TiO{sub 2} in visible light. Moreover, the visible light activity of interstitial N-doped TiO{sub 2} is higher than that of substitutional N-doped TiO{sub 2}. The microwave synthesis presented in this paper is a promising and practical method to produce interstitial nitrogen-doped photocatalysts with high visible light activity. - Graphical abstract: Both substitutional and interstitial N impurities can enhance the photoactivity of TiO{sub 2} in visible light; moreover, the visible light activity of interstitial N-doped TiO{sub 2} is higher than that of substitutional N-doped TiO{sub 2}.

• OSTI ID: 21043868
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 181; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
DOPED MATERIALS
INTERSTITIALS
MICROWAVE RADIATION
NITROGEN
PHOTOCATALYSIS
SURFACES
SYNTHESIS
TITANIUM OXIDES
X-RAY PHOTOELECTRON SPECTROSCOPY