Proceedings of nanoGe Fall Meeting 2018 (NFM18)
Publication date: 6th July 2018
In this poster we present the synthesis of free-standing metallic copper nanowire networks by electrodeposition in etched ion-track membranes. The fabrication process consists of several steps. At first interconnected ion-tracks are generated by sequential swift heavy ion irradiation of polycarbonate foils with thicknesses of 30 and 60 µm from four different directions. During a subsequent chemical etching process, the ion-tracks are selectively dissolved and enlarged to form an interconnected network of cylindrical nanochannels. [1, 2] Channel density and channel diameter can be adjusted independently during the irradiation and chemical etching steps, respectively. The electrodeposition conditions are investigated and optimized to synthesize three-dimensional assemblies of embedded Cu nanowires with homogeneous height and well-defined geometrical parameters. The network surface area and structure can be tailored by varying irradiation, etching and deposition parameters as pictured by scanning electron microscopy (SEM) images that will be shown on the poster.
Morphology and crystallinity of the nanowire networks are analysed by scanning electron microscopy and x-ray diffraction.
Three dimensional nanowire networks obtaining excellent stability can be applied in various fields such as sensing [3], thermoelectrics [4] and especially photoelectrochemical water splitting [5]. Moreover, they provide excellent model systems for studying the influence of the electrode structure in chemical electrocatalysis and electrosynthesis.
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