CoNi nanowires

A popular method for the synthesis of metal nanowires is the use of the polyol process,lal wherein the metal salt Is reduced in the presence of PVP to yield nanowires of the desired metal. For example, Ag nanowires have been rapidly synthesized using a microwave-assisted polyol method.161 CoNi nanowires are obtained by heterogeneous nucleation in liquid polyol.162 While Bi nanowires have been prepared employing NaBiO, as the bismuth source.161 Pd nanobars are synthesized by varying the type and concentration of reducing agent as well as reaction temperature.1 ... 

Recently, Zhang et proposed the idea of a critical potential for nanotubular growth while observing the electrodeposition of Co into unmodified AAO templates. In this mechanism, nanowires are formed when the applied potential is below a critical value, while nanotubes are formed when the applied potential is above this critical value. A depiction of this for Co nanostructures formed at different applied potentials can be found in Figure 10.17. This work was extended for other metals and metal alloys including Zn, Cu, Ni, ZnNi, and CoNi, all of which had a critical potential for nanotube formation. ... 

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