Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (8): 1965.doi: 10.7503/cjcu20120996

• Physical Chemistry • Previous Articles     Next Articles

High Yield NiO Nanocubes from Bulk Nickel by Millisecond Pulse Width Laser Ablation

TIAN Fei1, AN Jun-Chao2, CAO Hong-Mei1, GUO Shi-Zhen1, SUN Jing3   

  1. 1. School of Chinese Medicine Engineering, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China;
    2. Department of Mechanical and Electrical Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China;
    3. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
  • Received:2012-11-02 Online:2013-08-10 Published:2013-07-19

Abstract:

Long-pulse-width laser was used to ablate bulk nickel target immersed in circulating water to obtain NiO nanocubes in high yield. Transmission electron microscopy(TEM), X-ray diffraction(XRD), selected area electron diffraction(SAED) and energy dispersive spectromety(EDS) were employed to characterize the morphology and structure of the NiO nanocubes. The formation of NiO nanocubes is ascribed to the high temperature and high pressure(HTHP) conditions produced by high power density laser. The results show that when the laser power density is above 104 W/cm2, NiO nanocubes can be fabricated under laser ablation. The metal droplet is first generated by the laser with a power density higher than 104 W/cm2, which boil the surrounding liquid and produce a HTHP vapor due to the confinement of the liquid layer, and finally the surface reaction between the metal droplet and liquid take place to form NiO nanocubes. The laser ablating of bulk nickel target immersed in circulating water is a simple, green, high efficient method for the preparation of NiO nanocubes.

Key words: NiO nanocubes, Laser ablation, High temperature and high pressure(HTHP), Surface reaction, Metal droplet

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