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Synthesis of iron-oxide nanowires using industrial-grade iron substrates

Abstract : A method for synthesis of large quantities of iron oxide nanowires using low purity substrates is presented. One cm thick commercially available iron plates of purity 98 at.% were supplied from a steel company. The plates prepared by hot rolling contained several μm thick surface oxide films formed during industrial processing. Plates were cut to small samples and exposed to highly dissociated oxygen plasma and heated to elevated temperatures. The evolution of surface morphology on plasma treated samples was monitored by scanning electron microscopy. Nanowires of typical diameter about 20 nm and length of several μm grew on the substrate surface in a narrow temperature range and best results were obtained at about 1200 K. Higher temperature caused shortening and widening the nanowires. The results clearly show possibility for cheap manufacturing of iron oxide nanowires suitable for application in photovoltaics.
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Submitted on : Thursday, November 5, 2015 - 11:12:56 AM
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Alenka Vesel, Marianne Balat-Pichelin. Synthesis of iron-oxide nanowires using industrial-grade iron substrates. Vacuum Solutions, IOP Publishing Limited, 2014, 100, p.71-73. ⟨10.1016/j.vacuum.2013.07.026⟩. ⟨hal-01224861⟩



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