The hexagonal close-packed nickel nanocrystals prepared by fast scan voltammetry

被引：12

作者：

Tehrani, Ramin Mohamed Ali ^{[1
]}

Ab Ghani, Sulaiman ^{[1
]}

机构：

[1] Univ Sains Malaysia, George Town 11800, Malaysia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2009年 / 339卷 / 01期

关键词：

Hexagonal close-packed; Nanocrystals; Nickel; Electrodeposition; Fast scan voltammetry; HYDROGEN EVOLUTION REACTION; MAGNETIC-PROPERTIES; NI NANOPARTICLES; ELECTROCHEMICAL DEPOSITION; SILVER NANOPARTICLES; ENCAPSULATED NICKEL; LASER-ABLATION; ELECTRODEPOSITION; GROWTH; SIZE;

D O I：

10.1016/j.jcis.2009.07.042

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：

The nickel (Ni) nanocrystals (average diameter 9.7 +/- 2.3 nm) were deposited onto composite graphite electrode from a plating solution of 5.0 mM NiCl2 center dot 6H(2)O and 1.0 M NH4Cl using scan rate of 6500 mV s (1). The initial potential -1.5 V and final potential -0.5 V vs. Ag/AgCl with applied time 120 s were used for the whole deposition process. The variations of applied overpotentials and deposition times have affected the characteristics of Ni nanocrystals. It was found that the structural formation of Ni nanocrystals obtained were almost pure hexagonal close-packed (hcp). This study has demonstrated that the tuning of the final size, morphology and structural formation of the Ni nanocrystal were affected by control of nucleation, growth and hydrogen evolution processes in fast scan voltammetry technique used. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：125 / 132

页数：8

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