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联氨在金属纳米粉制备中的行为研究
引用本文:郑化桂,余华明.联氨在金属纳米粉制备中的行为研究[J].中国科学技术大学学报,1999,29(6):722-726.
作者姓名:郑化桂  余华明
作者单位:中国科学技术大学化学系(郑化桂,曾京辉,张幼娟,梁家和),结构成分分析中心(余华明,钱逸泰)
摘    要:通过UV、XRD和化学分析方法研究了联氨在同Fe(II) 、Co(II) 、Ni(II) 反应制备金属纳米粉的行为. 认为在乙醇- 水体系中, 水合肼还原Co(II) 、Ni(II) 的反应是经过配合催化, 还原Fe(II) 的反应是经过表面催化和高压诱导. 用水合肼对钴、镍纳米粉进行铁的包覆, 以及有钴、镍存在下的岐化分解都是表面催化.

关 键 词:水合肼        还原  催化

Study on Behavior of Hydrazine Hydrate in Synthesis of Metallic Nanopowders
ZHENG Huagui ZENG Jinghui YU Huaming,ZHANG Youjuan LIANG Jiahe QIAN Yitai.Study on Behavior of Hydrazine Hydrate in Synthesis of Metallic Nanopowders[J].Journal of University of Science and Technology of China,1999,29(6):722-726.
Authors:ZHENG Huagui ZENG Jinghui YU Huaming  ZHANG Youjuan LIANG Jiahe QIAN Yitai
Abstract:By studying UV visible spectrum, XRD patterns and chemical analysis, the behavior of hydrazine hydrate in the preparation of metallic nanopowders of Fe, Co and Ni was researched. It is believed that in an alcohol aqueous system, the reduction of Co(II) and Ni(II) to metallic cobalt and nickel by hydrazine hydrate is a coordinating catalysis procedure, while the Fe(II) reduced by hydrazine hydrate is by surface catalysis or high pressure induction. The coating of iron reduced by hydrazine hydrate on metallic cobalt or nickel nanopowders and self redox reaction of hydrazine hydrate under the existence of metallic cobalt or nickel are both surface catalyst reactions.
Keywords:hydrazine hydrate  iron  cobalt  nickel  reduce  catalysis
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