HOU Kun, GAO Zi-wei*, DA Min, LI Zi-mei, KANG Tao-ying, ZHAO Xin， GAO Huan-ping， LU Qi
(Key Laboratory of Applied Surface and Colloid Chemistry; College of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
The urchin-like ZnO micro/nanoparticles with high crystallinity were obtained by hydrothermal synthesis. It observed a radial growth of urchin-like ZnO composed with hexagonal prism nanorods from center to outsides. The morphology, particle diameter, crystalline structure, fluorescence and chemical composition of the urchin-like ZnO particles were characterized and analyzed by SEM, XRD, PL and EDX. The results indicate that the urchin-like ZnO particles with wurtzite structure are narrow in distribution of size and have a controllable diameter in the range of 30～80 μm by varying reaction time. A broad visible light emission peak around 450 nm is also observed by PL spectroscopy for the ZnO products. A multistep growth process that led to the formation of such a structure is proposed.
KeyWords:
hydrothermal synthesis; ZnO; micro/nanomaterial
