Influence of dose and ion concentration on formation of binary Al-Ni alloy nanoclusters

被引：31
|
作者：
Abedini, Alam [1 ]
Larki, Farhad [1 ]
Saion, Elias [1 ]
Zakaria, Azmi [1 ]
Hussein, M. Zobir [2 ]
机构：
[1] Univ Putra Malaysia, Fac Sci, Dept Phys, Upm Serdang 43400, Selangor, Malaysia
[2] Univ Putra Malaysia, Fac Sci, Dept Chem, Upm Serdang 43400, Selangor, Malaysia
来源：
RADIATION PHYSICS AND CHEMISTRY | 2012年 / 81卷 / 10期
关键词：
Al-Ni nanoclusters; Gamma reduction technique; Particle size; NANOPARTICLES; NICKEL; GROWTH; AG;
D O I：
10.1016/j.radphyschem.2012.05.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Colloidal Al-Ni nanoclusters were prepared in an aqueous polyvinyl alcohol solution containing aluminum chloride and nickel chloride as metal precursors, polyvinyl alcohol as a capping agent, isopropanol as a scavenger of hydroxyl radicals, and distilled water as a solvent. Gamma irradiations were carried out in a Co-60 gamma source chamber at doses up to 100 kGy. The nanocluster properties were characterized by transmission electron microscopy (TEM), UV-visible spectrophotometry, and X-ray diffraction (XRD). By controlling the dose and precursor concentration, nanoclusters with different particle sizes were obtained. The average particle diameter increased with increase of precursor concentration and decreased with increase of dose. This is owing to the competition between nucleation, growth, and aggregation processes in the formation of nanoclusters during irradiation. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1653 / 1658
页数：6
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