摘要
Wormhole-like mesostructured H3PW12O40/TiO2 composite catalyst was prepared by the combination of sol-gel chemistry and solvothermal treatment technique in the presence of a triblock copolymer surfactant. Results of Raman spectra, XRD, BJH pore distribution and TEM image indicate that the composite possess a three- dimensionally interconnected pore mesostructure with a high porosity and large pore size. Keggin units were homogeneously dispersed throughout the composite. This composite can catalyze the photodegradation of crystal violet （CV） under visible-light. The photocatalytic activity is much higher than that of pure TiO2 or H3PW12O40/TiO2 composite prepared in the absence of the surfactant.
Wormhole-like mesostructured H3PW12O40/TiO2 composite catalyst was prepared by the combination of sol-gel chemistry and solvothermal treatment technique in the presence of a triblock copolymer surfactant. Results of Raman spectra, XRD, BJH pore distribution and TEM image indicate that the composite possess a three- dimensionally interconnected pore mesostructure with a high porosity and large pore size. Keggin units were homogeneously dispersed throughout the composite. This composite can catalyze the photodegradation of crystal violet （CV） under visible-light. The photocatalytic activity is much higher than that of pure TiO2 or H3PW12O40/TiO2 composite prepared in the absence of the surfactant.
基金
Supported by the National Natural Science Foundation of China(Nos.20633010 and 20873181)
the Program of New Century Excellent Talents in University,China(No.NCET-04-0311)
