Visible-light photocatalytic behavior of two different N-doped TiO2

The visible-light photocatalytic behavior of two different N-doped TiO2 correlated with their physicochemical properties was investigated. The results show that N-TiO2-1, prepared by a novel TiO2 with unique defect structure, is more active in visible-light photocatalytic oxidation of C3H6 than N-Ti...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Applied surface science 2008-05, Vol.254 (15), p.4462-4466
Hauptverfasser:	Zhang, Jiwei, Wang, Yan, Jin, Zhensheng, Wu, Zhishen, Zhang, Zhijun
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption and reflection spectra: visible and ultraviolet Chemistry Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Electrochemistry Electrodes: preparations and properties Exact sciences and technology General and physical chemistry Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Physics Single-crystal and powder diffraction Structure of solids and liquids crystallography Visible and ultraviolet spectra X-ray diffraction and scattering
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The visible-light photocatalytic behavior of two different N-doped TiO2 correlated with their physicochemical properties was investigated. The results show that N-TiO2-1, prepared by a novel TiO2 with unique defect structure, is more active in visible-light photocatalytic oxidation of C3H6 than N-TiO2-2, prepared by standard P25-TiO2 (Degussa). The specific rate constant of the former is ca. 5 times that of the latter. One model of photoactive center (Vo-NO-Ti) in anatase phase responsible for the visible-light photocatalytic activity is proposed. The higher the Vo-NO-Ti concentration is, the better the visible-light photocatalytic activity is.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2008.01.020