Abstract:

Novel CuC2O4 porous spheres were prepared on a large scale by a mild aqueous solution method at 100 ?C for 10 h using CuCl2 and H2C2O4 as raw materials. Structure and morphology of as-products were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The influence of experimental conditions such as concentration of reactants, reactive temperature and the volume of anions on the structure and morphology of as-products have been carried out. The results showed that as-products were monoclinic structure CuC2O4 porous spheres with diameter of 400-540 nm. Each porous sphere is made of many nanoparticles with size of 50-80 nm. Reactant temperature has more effect on the size of the CuC2O4 porous spheres, and concentration of reactants and cupric salts have all influence on the size of aggregates of particles. So through adjusting the experimental conditions, CuC2O4 porous spheres could be controlled-synthesis. The formation mechanism of CuC2O4 porous spheres based on the etching effect was discussed.

Key words: Cupper oxalate porous sphere, Controlled-syntheis, Etching effect