Abstract: Tungsten-doped TiO2 coated cotton fabric was successfully in prepared with (NH4)2TiF6, H3BO3 and Na2WO4 (or (NH4)2WO4) as raw materials by microwave-assisted method. The influence of the molar ratio of (NH4)2TiF6 and H3BO3, microwave heating temperature and tungsten doping ratio on the crystal form of TiO2 were studied. The result shows that the ratio of (NH4)2TiF6 and H3BO3, microwave heating temperature, tungsten doping ratio have little influence on the crystal form of TiO2. The effects of the concentration of the precursor, tungsten doping ratio, microwave reaction time and temperature on the photocatalytic performance of coated fabric were also investigated. The best processing condition was the doping ratio of 5% tungsten, 0.05mol/L (NH4)2TiF6 and microwave heating at 95°C for 45min.

Key words: microwave-assisted method, in-situ synthesis, tungsten-doped TiO2, photocatalytic degradation, cotton fabric