Article ID Journal Published Year Pages File Type
596248 Colloids and Surfaces A: Physicochemical and Engineering Aspects 2009 5 Pages PDF
Abstract

Co3O4 hollow microspheres were synthesized by a two-step method in ethylene glycol (EG) system. First, the cobalt oxide precursor was produced in the presence of ethylene glycol (EG) by using cobalt chloride hexahydrate (CoCl2·6H2O) and sodium acetate (NaAc) as reactants. Second, the precursor was calcined to obtain the products of crystalline cobalt oxide. The products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and scanning electron microscopy (SEM). The Brunauer–Emmett–Teller (BET) gas adsorption measurement shows that the products were porous structures with two narrow porous volume distributions. Because of the unique nanostructured hollow structure composed of nanoslices, the photocatalytic activity of the products was examined by measuring the photodegradation of methyl orange solution with ultraviolet radiation. The result shows that our products have a good photocatalytic activity.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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