Preparation of Fe~(3+)/Ag~+ co-doped nanometer TiO_2 photocatalyst with Sol - gel auto-igniting method

摘要

To study the preparation of Fe~(3+)/Ag~+ co-doped TiO_2 photocatalyst with sol-gel auto-igniting method, TiO_2 powder was prepared with TiO_2 as raw material and the photocatalytic activity of doped TiO_2 was examined with methylene blue (MB) as water samples, and a 15w low pressure mercury lamp as light source. Results showed that: the TiO_2 co-doped with 0.02% (molar ratio) of Fe~(3+) and 0.5% (molar ratio) of Ag~+ gives the highest photocatalytic activity. The according photodegradation rate constant of MB is 1.33 and 1.10 times of that with TiO_2 and Fe/TiO_2 separately.