Catalysis Letters

, Volume 123, Issue 3, pp 173–180

Enhancing Photocatalytic Activity of Polymorphic Titania Nanoparticles by NMP Solvent-based Ambient Condition Process

Authors

  • Sujaree Kaewgun
    • School of Materials Science and EngineeringClemson University
  • Christopher A. Nolph
    • School of Materials Science and EngineeringClemson University
    • School of Materials Science and EngineeringClemson University
Article

DOI: 10.1007/s10562-008-9490-9

Cite this article as:
Kaewgun, S., Nolph, C.A. & Lee, B.I. Catal Lett (2008) 123: 173. doi:10.1007/s10562-008-9490-9

Abstract

Solvent-based ambient condition sol (SACS) process with N-methylpyrrolidone (NMP) as the solvent, is a post-treatment technique utilized to modify polymorphic titania nanoparticles prepared by a water-based ambient condition sol process. All samples were characterized by X-ray diffraction, N2 physisorption, CHNS analysis, UV–vis absorption spectrophotometry, FT-IR, and TEM and compared to a commercial reference titania product, Degussa P25. Photocatalytic activity, evaluated by the degradation of methyl orange under ultraviolet (UV) and visible light (VL), showed that SACS, with NMP as the solvent, is a powerful treatment to enhance TiO2 photocatalytic activity by minimizing lattice hydroxyls and doping titania samples with nitrogen.

Keywords

Polymorphic titaniaSolvothermalPhotocatalytic activity

Copyright information

© Springer Science+Business Media, LLC 2008