STABILIZER-ASSISTED PREPARATION AND ELECTROCHEMICAL PROPERTIES OF NICKEL NANOPARTICLES

Stabilized nickel nanoparticles (SNNPs) were prepared using Ni(acac)2 (acac = acetylacetonate) via a simple solvothermal method. The synthesis of the nickel nanoparticles was performed in the presence of different concentrations of sodium dodecyl sulfate (SDS) as the stabilizer in order to appraise their influence on the morphology, size, dispersion and electrochemical activity of the nickel NPs. It was noteworthy that the average particles size of the SNNPs has been reduced by increasing the SDS concentration. The stabilized Ni nanoparticles could be used as electrode materials for hydrogen evolution in alkaline medium. The electrochemical measurements demonstrated that the higher conductivity and lower value of faraday resistance of the as-prepared samples were when the mole ratio of SDS: Ni2+ was 2:1.