高等学校化学学报2013，Vol.34Issue(8)：1965-1970,6.DOI:10.7503/cjcu20120996
毫秒激光烧蚀镍靶高效率制备NiO纳米立方体
High Yield NiO Nanocubes from Bulk Nickel by Millisecond Pulse Width Laser Ablation
摘要
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.关键词
NiO纳米立方体/激光烧蚀/高温高压/表面反应/金属液滴Key words
NiO nanocubes/ Laser ablation/ High temperature and high pressure(HTHP) / Surface reaction/Metal droplet分类
化学化工引用本文复制引用
田飞,安俊超,曹宏梅,郭世珍,孙景..毫秒激光烧蚀镍靶高效率制备NiO纳米立方体[J].高等学校化学学报,2013,34(8):1965-1970,6.基金项目
国家自然科学基金(批准号:81102802)资助. （批准号:81102802）
