Templated Fabrication of Co@Au Core-Shell Nanorods

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In this study attention was focused on a templated fabrication of Au nanotubular structures that could carry a highly magnetic entity such as cobalt. In brief, experimentation was performed to create Co@Au core-shell nanorods of different lengths. The preliminary core-shell structures were first characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive analysis using x-rays (EDAX). XRD results revealed that electrodeless depositions of gold nanotubes (~50 nm in diameter in polycarbonate track-etch [PCTE] membranes) were having preferred (111) orientation. These Au-filled PCTE membranes were later used as electrodes to potentiostatically deposit cobalt to form Co@Au nanorods. These core-shell structures were found to be highly magnetic in nature and could easily be separated by dissolving the PCTE membranes in 1,2-dicholroethane. These magnetic nanostructures are promising vehicles for new forms of drug delivery systems, hyperthermia, high-density data storage, and many other applications. It is therefore a priority to advance techniques in the fabrication of these nanostructures so that the ones with the most ideal magnetic properties may be realized.

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  • 07/16/2018
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