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A simple acid-etching method was used to leach out silver from a bimetallic gold-silver based Digital Video Disc (DVD), which was further treated via a cyclic voltammetric scanning in 1 mmol/L HAuCl4 solution to create a porous gold nanostructure. The as-fabricated electrode was characterized by field-emission scanning electron microscopy, energy-dispersed X-ray spectroscopy and X-ray diffraction...
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