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Citation: YUAN Juan, XIAO Yao-kun, YU Gang, HU Bo-nian, YE Li-yuan. Pd-Ni Nanowires Prepared by Electrochemical Step-edge Decoration[J]. Acta Physico-Chimica Sinica, ;2005, 21(06): 602-606. doi: 10.3866/PKU.WHXB20050605 shu

Pd-Ni Nanowires Prepared by Electrochemical Step-edge Decoration

1.
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082; Hunan College of Building Materials, Hengyang 421008

Received Date: 11 October 2004
Available Online: 15 June 2005

The arrays of Pd-Ni nanowires were prepared on highly oriented pyrolytic graphite by electrochemical step-edge decoration under the control of successive potentiostatic triple-pulse. The affecting factors on the composition of Pd-Ni alloy were investigated. The experimental results showed that the alloy composition of palladium and nickel could be adjusted by changing the ratio of Ni²⁺ and Pd²⁺ concentrations. The diameters of nanowires were controlled by adjusting the growing time and the growing potential. In the mixture of 7 mmol•L^-1 PdCl₂， 3 mmol•L^-1 NiSO₄ and 0.2 mol•L^-1 NH₄Cl，at pH 8.5，the arrays of Pd-Ni alloy nanowires with mean diameter of 210 nm, length about 400 μm and composition of Ni mass fraction of 12.4% were synthesized with the nucleating pulse of -2.0 V, 0.2 s and growing pulse of -0.4 V, 1 h.
- Pd-Ni alloy;Nanowires;Potentiostatic pulse;Electrochemical step-edge decoration;Preparation
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