Microwave-assisted low temperature in-situ synthesis and coating of Tungsten-doped TiO_2 onto cotton fabric and photocatalytic performance of coated fabric

Tungsten-doped TiO2coated cotton fabric was successfully prepared with( NH4)2TiF6,H3BO3and Na2WO4( or( NH4)2WO4) as raw materials by microwave-assisted method. The influence of the molar ratio of( NH4)2TiF6to H3BO3,microwave heating temperature and tungsten doping ratio on the crystal form of TiO2was studied. The result showed that the ratio of( NH4)2TiF6to 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 the coated fabric were also investigated. The best process conditions for preparing this coated fabric are: doping ratio of tungsten 5%,0. 05 mol /L( NH4)2TiF6and microwave heating at 95 ℃ for 45 min.