Fabrication and Characterization of Zn-ZnO Core-shell Gap Structure in Low-temperature Water-bath Process

Core-shell gap structure of Zn-ZnO nanomaterials consisted of Zn sphere core and ZnO nanorods shell was synthesized by low-temperature water-bath process using oleic acid-ethanol(OA-ALKY) as assistant.The sizes of the products depended on the diameter of Zn spheres and the ZnO nanorods which formed on the shell grew along the [001] direction with a diameter of 80-150nm.Changing the reaction conditions could get different core-shell structures.Besides,these structures were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope(TEM) and Fourier transform infrared spectroscope(FT-IR),consequently the growth mechanism of the structures were proposed.The result indicates that adding oleic acid and ethanol mixture plays an important role in forming gap space of the core-shell structure,and the size of ZnO nanorods of the shell can be controlled by magnetic stirring.