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《Material Science and Technology》 2001-03
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Preparation of nanosized nickel powders by reduction in 1,2-propanediol

LI Peng , GUAN Jian guo, ZHANG Qing jie, ZHAO Wen yu, YUAN Run zhang(State Key Laboratory of Advance Technology for Materials Synthesis and Processing,WUT,Wuhan 430070, China)  
The nanosized nickel powders with a face centered cubic structure and a size less than 50 nm were synthesized by the reduction of tetra hydrated nickel acetate in 1,2 propanediol. Factors such as the reducing system, the intermediate phase, the concentration NaOH influencing on the preparation of Ni nanoparticles were investigated by means of electron diffraction pattern, XRD and TEM. The results show that complete reaction might be available more easily in polyol solution than in the polyol water solution. Through comparison of effects of ethylene glycol and propylene glycol on the chemical reaction it was indicated that the size of Ni crystallite particles might decrease obviously and the time of complete reaction might be shortened greatly with propylene glycol as the reducing agent. Different reaction mechanisms might result in the different purity and particle size of nickel powders.
【Fund】: 国家自然科学基金资助项目 ( 2 990 40 0 5 )
【CateGory Index】: O614
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