Electrosynthesis of Sn-Co nanowires in alumina membranes

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Abstract

A fabrication process of amorphous nanowires of Sn–Co alloys, based on electrodeposition intoanodic alumina membranes, is described. It is shown that nanowires of tin–cobalt alloys with differentcompositions can be produced by varying electrodeposition time and concentration ratio ofsalts dissolved into the electrolytic bath. Importance of the chelating agent to produce amorphousSn–Co alloys has also been addressed. Electrodepositions were carried out potentiostatically at−1 V versus Saturated Calomel Electrode and 60 C for times ranging from 10 to 90 minutes; theatomic fraction of Co2+ in the aqueous electrolyte (Co2+/(Co2+ +Sn2+ was varied from 0.33 to0.67. Nanowires aspect ratio (height/width) was controlled by adjusting the deposition time. Alloyswere characterized by scanning electron microscopy and X-ray diffraction; compositional analysiswas performed by energy dispersive spectroscopy and induced coupled plasma. The highest concentrationof Co in the alloy was found after 90 min of electrodeposition from a bath containing 67%of Co2+.
Lingua originaleEnglish
pagine (da-a)8328-8335
Numero di pagine8
RivistaJournal of Nanoscience and Nanotechnology
Volume10
Stato di pubblicazionePublished - 2010

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All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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