Abstract
The use of metallic nanowires is mostly reduced to scientific areas where a small quantity of nanostructures are needed. In order to broaden the applicability of these nanomaterials, it is necessary to establish novel synthesis protocols that provide a larger amount of nanowires than the conventional laboratory fabrication processes at a more competitive cost. In this work, we propose several modifications to the conventional electrochemical synthesis of nanowires in order to increase the production with considerably reduced production time and cost. To that end, we use a soft anodization procedure of recycled aluminum at room temperature to produce the alumina templates, followed by galvanostatic growth of CoFe nanowires. We studied their morphology, composition and magnetic configuration, and found that their properties are very similar to those obtained by conventional methods.
Highlights
Nanotechnology is one of the major driving forces behind the technological revolution of the 21st century, and nanomaterials play a key role in this revolution
Focusing on the production of low-diameter ferromagnetic NWs for magnetic applications based on composites, we study the combined effect of using low purity Al templates and the one-step anodization process at room temperature
The first stage in the development of a protocol for the scaling up of the production of metallic NWs is the fabrication of anodized aluminium oxide (AAO) templates
Summary
Nanotechnology is one of the major driving forces behind the technological revolution of the 21st century, and nanomaterials play a key role in this revolution. In applications involving a large amount of nanomaterials, such as those related to nanomedicine [1,2], or for the fabrication of composites [3,4], nanoparticles—spherical nanomaterials—are commonly employed. These nanoparticles are normally synthesized by chemical methods [5]. Electrodeposition is a very suitable growth technique for the fabrication of these nanomaterials Using this technique, the properties of the NWs can be tailored [17,18] to adapt them to specific applications. Taking advantage of their elongated shape, the magnetic properties of metallic NWs can be controlled just by tailoring their shape and composition [19,20]; this has been, for example, recently exploited in the fabrication of corrosion resistant composites [21], magnetoelectric
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