The supported TiO2 film was prepared by sol-gel method and impregnation-roasting-calcination method using titanium foil as a carrier , and characterized by SEM , EDS and XRD. The photocatalytic degradation effect of gaseous unsymmetrical dimethylhydrazine ( UDMH ) by the TiO2 thin film was investigated. The effects of different ultraviolet light sources and different initial concentrations on degradation of gaseous UDMH were compared. The results showed that : TiO2 was uniformly loaded on titanium foil in the form of porous film;When the mass concentration of UDMH was 877 mg/m^3 , the degradation rate of UDMH was 99.9 % after 17 min of reaction and the mineralization rate of UDMH was 41.58 % after 60 min of reaction with 500 mg/m^3 of UDMH.
Environmental Protection of Chemical Industry
unsymmetrical dimethylhydrazine ( UDMH )
vacuum ultraviolet ( VUV )