Fe,Co,Ni纳米粉化学还原制备机理的光谱研究  

STUDY ON Fe(II), Co(II) AND Ni(II) REDUCTION MECHANISM BY UV-VISIBLE SPECTRUM

作　　者：郑化桂[1] 曾京辉[1] 梁家和[1] 

机构地区：[1]中国科学技术大学化学系,合肥230026

出　　处：《金属学报》1999年第8期837-840,共4页Acta Metallurgica Sinica

摘　　要：通过Fe（Ⅱ），CO（Ⅱ）和Ni（Ⅱ）的H2O，NH3，OH－，C2H5OH及N2H4配合物的紫外-可见光谱研究，表明了在金属离子被N2H4还原过程中，可以通过和金属离子配位而活化，通过表面吸附或高压诱导作用消除动力学障碍，实现金属纳米粉的合成，并首次在水-乙醇体系中高效快速合成了纯度高。By studying the coordinates of Fe(II), Co(II) and Ni(II) with ammonia, OH-, alcohol and N2H4 with UV-visible spectrum it is discovered that when metallic ions are reduced by hydrazing hydrate,the metallic icas can be activated by coordinating and surface absorption and high pressure inductive effect may remove the kinetic difficulty and realize the prodution of metallic powders. And we firstly synthesized highly pure metallic nanopowders and metal-metal composites in the alcohol-aqueous system. These reactions are performed at fast speed and the powders have very good catalyst and magnetic properties.

关 键 词：铁 钴 镍 金属粒子 联氨 光谱 纳米粉末 

分 类 号：TF123.72[冶金工程—粉末冶金]