Preparation and Visible-light Catalytic Property of Ag+/Ag/ZnO Porous Nano-structured Fiber Materials

Ag+/Ag/ZnO porous nano-structured fiber materials were prepared by the template-assisted two-steps method and characterized by thermogravimetric analysis(TG), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy (SEM) and UV-Vis spectroscopy (UV-Vis) techniques. The effect of modified silver amount(molar fraction, 0-1.5%) on the photocatalytic property of ZnO materials was studied by the degradation of methylene blue(MB) as the model reaction. The results show that the Ag+-Ag co-modified ZnO porous nano-structured fiber materials are successfully prepared via the template-assisted two-steps method and the Ag+-Ag co-modifification affects the photocatalytic performance of ZnO materials by affecting its cell structure and light adsorption property and morphology. Under the irradiation of visible light, the Ag+/Ag/ZnO porous nano-structured fiber materials showed better catalytic performance than pure ZnO and the catalytic perfrmace of Ag+/Ag/ZnO is related to the modified amount of Ag+-Ag. In this paper, the way of Ag+ and Ag for improving photocatalytic performance of the ZnO materials was discussed. And the obtained results are helpful to understand the photocatalytic phenomena and mechanisms on the multi-structured material.