Preparation Of Nano-structured Crystalline Tungsten(Ⅵ) Oxide And Enhanced Photocatalytic Activity For Decomposition Of Organic Compounds Under Visible Light Irradiation

摘要

Nano-structured crystalline tungsten(Ⅵ) oxides (WO_3) were prepared using a colloidal crystal template method; these materials have increased specific surface area compared to crystalline WO_3 prepared without the template, and after platinum loading they show enhanced photocatalytic activity for acetic acid decomposition under visible light.rnTitanium(Ⅳ) oxide (TiO_2) is widely used as a photocatalyst, displaying excellent activity under ultraviolet (UV) light for a number of industrially useful reactions. However, TiO_2 is not photoactive at visible wavelengths, which is desirable for the efficient decomposition of environmental organic contaminants using sunlight or indoor fluorescent light.