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Enhanced photocatalytic activity and stability of nano-scaled TiO2 co-doped with N and Fe
- Source :
-
Applied Surface Science . Oct2011, Vol. 258 Issue 1, p182-188. 7p. - Publication Year :
- 2011
-
Abstract
- Abstract: Titanium dioxide (TiO2) nanoparticles co-doped with N and Fe were prepared via modified sol–gel process. The products were characterized by transmission electron microscopy (TEM), N2 adsorption, X-ray diffraction (XRD), Raman spectroscopy, UV–vis spectroscopy, photoluminescence (PL), and X-ray photoelectron spectroscopy (XPS). It is shown that the prepared TiO2 particles were less than 10nm with narrow particle size distribution. The addition of MCM-41 caused the formation of Ti–O–Si bond which fixed the TiO2 on MCM-41 surface, thus restricted the agglomeration and growth of TiO2 particles. The photocatalytic performance in the degradation of methylene blue showed that N, Fe co-doped TiO2 exhibited much higher photocatalytic activity than doped sample with nitrogen or Fe3+ alone under both UV and visible light. N, Fe co-doping decreased the loss of doping N during the degradation reaction, thus increased the photocatalytic stability. It was also found that the nitridation time had significant influence on the photocatalytic activity of prepared TiO2 catalysts. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 258
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 66660816
- Full Text :
- https://doi.org/10.1016/j.apsusc.2011.08.028