Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 156, Issue 1-3, Pages 135-140Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2007.12.018
Keywords
N and S codoping; titanium dioxide; UV-vis photocatalytic activity; hydrothermal method
Categories
Ask authors/readers for more resources
N-S-codoped anatase nanosized TiO2 photocatalyst (NSTO) was successfully prepared by one-step hydrothermal method from a mixed aqueous solution of Ti(SO4)(2) and thiourea. The samples were characterized by XRD, UV-vis, XPS, Fr-IR and EA. From results of UV-vis, a red shift of the absorption edge was brought out owing to N and S codoping, and the extension for photoabsorption range of NSTO occurred. XRD, XPS, EA and FT-IR studies revealed that N and S were in situ codoped in the lattice of TiO2 and N concentration decreased from the surface to the center of NSTO. Especially, the photocatalytic tests indicated that NSTO exhibited a high activity for decompositions of methyl orange both under UV-light and vis-light irradiation comparing to S-doped TiO2 (STO) and undoped TiO2 (TO). The high activity of NSTO can be related to the results of the synergetic effects of strong absorption in the UV-vis region, red shift in adsorption edge, oxygen vacancies and the enhancement of surface acidity induced by N and S codoping. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available