PREPARATION OF FIBRELIKE NANOCRYSTALLINE NICKEL POWDERS BY THE γ-RADIATION METHOD

YIN Yadong; XU Xiangling; GE Xuewu; WU Hongkai; ZHANG Zhicheng

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PREPARATION OF FIBRELIKE NANOCRYSTALLINE NICKEL POWDERS BY THE γ-RADIATION METHOD

更新时间：2023-04-07

- PREPARATION OF FIBRELIKE NANOCRYSTALLINE NICKEL POWDERS BY THE γ-RADIATION METHOD
- Journal of Radiation Research and Radiation Processing Vol. 17, Issue 1, Pages: 19-23(1999)
- 作者机构：
  
  1.中国科技大学应用化学系　合肥　230026
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YIN Yadong, XU Xiangling, GE Xuewu, et al. PREPARATION OF FIBRELIKE NANOCRYSTALLINE NICKEL POWDERS BY THE γ-RADIATION METHOD. [J]. Journal of Radiation Research and Radiation Processing 17(1):19-23(1999)
DOI：

YIN Yadong, XU Xiangling, GE Xuewu, et al. PREPARATION OF FIBRELIKE NANOCRYSTALLINE NICKEL POWDERS BY THE γ-RADIATION METHOD. [J]. Journal of Radiation Research and Radiation Processing 17(1):19-23(1999) DOI：

摘要

以AgNO,3,为成核剂，用,γ,射线辐照NiSO,4,的水溶液，合成了多晶纳米镍粉。研究了pH值对产物组成的影响，发现保持溶液碱性是制备纳米镍粉的必要条件。用透射电镜、X射线光电子能谱对产物进行了表征，发现镍粉呈纤维状，粗约10nm以下，银作为晶核被金属镍包裹在内部。研究表明，AgNO,3,的存在不仅为Ni,2+,的还原、聚集提供了生长中心，而且还影响了最终产物的微观形态。

Abstract

Nanocrystalline nickel powders were prepared by irradiating the aqueous solution of NiSO,4, with γ-ray, using AgNO,3, as nucleation agent. It was found that the pH value of the system before irradiation affected the composition of products and alkalinity of solution was necessary to prepare nickel nanopowders. The characterization of products with transmission electron microscope (TEM) and X-ray photoelectron spectrum (XPS) indicated that the powders were fibrelike nickel particles (diameter ,<,10nm) . Metallic silver, as crystal nucleus,was wrapped up in metallic nickel. The existence of AgNO,3, not only supplied the aggregation center, but also affected the micromorphology of products.

关键词

γ射线辐射合成纳米镍晶微观形态纤维状

Keywords

γ-rayRadiation synthesisNickel nanocrystalineMicromorphologyFibrelike

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