Abstract
A simple route to synthesize mesoporous ZnO nanoparticle was reported by using polystyrene microemulsion system composed of cetyltrimethylammonium bromide/styrene/zinc nitrate/ ammonium persulfate. The samples were characterized by thermogravimetry and differential thermal analysis (TG-DTA), X-ray diffraction, scanning electron microscope and mercury porosimeter. Experimental results showed that the specifi c surface area and pore volume of the synthesized mesoporous zinc oxide were 11.013 m2/g and 0.1551 cm3/g, respectively. On the basis of the experimental results, the possible mechanism of pore formation was proposed. Moreover, the photocatalytic activities of the synthesized ZnO were also evaluated in the photodegradation of methylene blue in aqueous solutions under UV irradiation, and all of the synthesized ZnO exhibited high photocatalytic activities.
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