Preparation of Nitrogen-doped Titania Photocatalyst by Treatment of Layered Titania/Isostearate Nanocomposite with Aqueous Ammonia

摘要

A layered titania/isostearate nanocomposite was prepared via the sol-gel process in a hydrophobia solvent with a salt catalyst. The isostearate modifiers hybridized with titania sheets were completely removed by treatment with aqueous ammonia. A vivid yellow powder of plate anatase was obtained by firing the treated sample at 450 deg C, and it showed a strong photo-absorption in the visible light region. Rapid degradation of methylene blue was observed in an aqueous solution during irradiation with 470-nm light.