Preparation and Grain Growth Kinetic of Nickel Oxide Nano-particles

摘要：

　　Nickel oxide nano-particles were prepared successfully by thermal decomposition of the β-Ni(OH)2 in this work.The precursor β-Ni(OH)2 was obtained by the chemical precipitation reaction of Ni(NO3)2 and KOH at near room temperature.The grain growth kinetic ofnano-sized nickel oxide for thermal treatment process was studied by means of isothermal and isochronal annealing.The results showed the precursor β-Ni(OH)2 is spindle alike shape,which can transform entirely into cubic NiO nano-particles when calcinated at temperature higher than 280 C.The NiO nano-particles grew up with the increasing of the calcinating temperature and the prolonging of the calcinatiing time.Moreover,we found that to tune the annealing temperature is more available for size controlling than to vary the annealing time.The grain growth kinetic of NiO nano-particles is found to follow the equation D7 =1.946× 1017·t·exp(-1.466× 103/RT),where the grain growth exponent and an activation energy are n=7 and Ea=146.56KJ/mol,respectively.

关键词： NiO Nano-particles Grain Growth Kinetics

作者: Hui Han Qiherima Li Lv Xiaojing Wang

作者单位: College of Chemistry and Chemical Engineering,Inner Mongolia University,huhehaote city,010021,P.R.China

会议类型: 国际会议

会议名称: the international conference on Frontier of Nanoscience and Technology (2011纳米科学与技术国际会议(ICFNST 2011))

会议地点: 大理

会议语种:英文

页码: 133-136

在线出版日期: 2011-08-18（万方平台首次上网日期，不代表论文的发表时间）