论文部分内容阅读
Highly ordered mesoporous WO_3/TiO_2(MWTs) composite materials with tunable chemical compositions were obtained by a surfactant template-assisted evaporation-induced self-assembly (EISA) processes.The structure properties of the MWT materials were characterized by small angle XRD,TEM and N_2 sorption.The resultant materials showed large amount of ordered mesopores and high chemical homogeneity.With increasing crystallinity degree,the order degrees of mesostructure turned worse gradually.The MWT hybrids exhibited excellent visible light response due to the addition of WO_3 with narrow band gap.Photocatalytic performances of the MWT samples were determined by measuring the photo-degradation of rhodamine B dye and phenol under simulated solar light irradiation.The effect of material parameters such as surface area,crystallinity and chemical compositions in the binary heterostructured system on photocatalytic performance were discussed in details.
Highly ordered mesoporous WO_3 / TiO_2 (MWTs) composite materials with tunable chemical compositions were obtained by a surfactant template-assisted evaporation-induced self-assembly (EISA) processes. The structure properties of the MWT materials were characterized by small angle XRD, TEM and N_2 sorption.The resultant materials showed large amount of ordered mesopores and high chemical homogeneity.With increasing crystallinity degree, the order degrees of mesostructure turned worse gradually.The MWT hybrids exhibited excellent visible light response due to the addition of WO_3 with narrow band gaps. Photocatalytic performances of the MWT samples were determined by measuring the photo-degradation of rhodamine B dye and phenol under simulated solar light irradiation. The effect of material parameters such as surface area, crystallinity and chemical compositions in the binary heterostructured system on photocatalytic performance were discussed in details.