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研究论文

电化学方法制备纳米NiO及反应机理初探

  • 顾家山 ,
  • 韩爱杰 ,
  • 周幸福 ,
  • 褚道葆 ,
  • 林昌健
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  • 安徽师范大学化学与材料科学学院有机化学研究所,安徽师范大学化学与材料科学学院有机化学研究所,安徽师范大学化学与材料科学学院有机化学研究所,安徽师范大学化学与材料科学学院有机化学研究所,厦门大学固体表面物理化学国家重点实验室 安徽芜湖241000 ,安徽芜湖241000 ,安徽芜湖241000 ,安徽芜湖241000 ,福建厦门361005

收稿日期: 2002-11-28

  修回日期: 2002-11-28

  网络出版日期: 2002-11-28

Electrochemical Preparation and Reaction Mechanism of Nanocrystalline NiO

  • GU Jia-shan ,
  • HAN Ai-jie ,
  • ZHOU Xing-fu ,
  • CHU Dao-bao ,
  • LIN Chang-jian
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  • (1.College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, 2.State Key Laboratory for Physics Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China

Received date: 2002-11-28

  Revised date: 2002-11-28

  Online published: 2002-11-28

摘要

采用电化学法一步制备了镍醇盐配合物Ni(OEt) 2 (acac) 2 (acac为乙酰丙酮基 ) ,并以其作为前驱体 ,控制一定水解条件制得胶体 ,分别在 4 5 0℃ ,60 0℃煅烧均得到具有立方晶型的纳米NiO粉体 .通过红外光谱 (FT_IR)、核磁共振 (1HNMR)、拉曼光谱 (Ramanspectrum)、X_射线粉末衍射 (XRD)、透射电子显微镜 (TEM)等手段对前驱体和NiO粉体进行了表征 .结果表明 ,电解合成的最佳温度为 30~ 4 0℃ ,不溶性镍醇盐配合物升温到 4 0~ 5 0℃即可溶解 .电解法制备得到的纳米NiO层呈球形单分散结构 ,粒径在 10~ 15nm左右 .本文同时讨论了电合成纳米NiO的反应机理

本文引用格式

顾家山 , 韩爱杰 , 周幸福 , 褚道葆 , 林昌健 . 电化学方法制备纳米NiO及反应机理初探[J]. 电化学, 2002 , 8(4) : 427 -432 . DOI: 10.61558/2993-074X.1471

Abstract

Metallic nickel was electrochemically dissolved in absolute ethanol and acetylacetone mixed solutions and in the presence of Bu 4NBr (as an electron-conductive additive). The electrolyte solution containing the precursor was then directly hydrolyzed to obtain nanocrystalline NiO. The precursor was characterized by FTIR?HNMR?Raman spectra and the nano-powder was characterized by XRD and TEM. The results showed that the NiO powder after calcined at 450 ℃ had formed the cubic NaCl structure and the nanocrystalline NiO prepared by this method had narrow size distribution of 10~15 nm. Moreover, the product yield could be improved by controlling temperature below 30~40 ℃. The reaction mechanism was also discussed in this paper.

参考文献

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