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dc.contributor.authorMurugappan, Krishnan
dc.contributor.authorSilvester, Debbie
dc.contributor.authorChaudhary, Deeptangshu
dc.contributor.authorArrigan, Damien
dc.date.accessioned2017-01-30T12:24:52Z
dc.date.available2017-01-30T12:24:52Z
dc.date.created2014-07-15T20:00:22Z
dc.date.issued2014
dc.identifier.citationMurugappan, K. and Silvester, D. and Chaudhary, D. and Arrigan, D. 2014. Electrochemical Characterization of an Oleyl-coated Magnetite Nanoparticle-Modified Electrode. ChemElectroChem. 1 (7): pp. 1211-1218.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/21376
dc.identifier.doi10.1002/celc.201402012
dc.description.abstract

The electrochemical behavior of oleyl-coated Fe3O4 nanoparticles synthesized by chemical co-precipitation is investigated. An approach based on the formation of a film of nanoparticles on an electrode surface is employed together with cyclic voltammetry. Characterization by scanning electron microscopy, confocal Raman spectroscopy, and X-ray photoelectron spectroscopy shows that Fe3O4 nanoparticles with a particle size of 20 nm coated with oleic acid are synthesized. These nanoparticles show superparamagnetic behavior and form a homogeneous film from their solution when dried in air. The nanoparticle film electrodes display redox behavior in acidic media but not in alkaline media, which suggests that protons take part in the electrochemical reaction. It is estimated that there are about 240 layers of nanoparticles deposited on the surface and that only around 1% of these nanoparticles are electrochemically active. This is attributed to either the long-chain surfactant or the large number of layers of nanoparticles inhibiting the electron- transfer process.

dc.publisherJohn Wiley & Sons, Inc
dc.subjectconfocal raman spectroscopy
dc.subjectmagnetite nanoparticles
dc.subjectmodified electrodes
dc.subjectcyclic voltammetry
dc.subjectelectrochemistry
dc.titleElectrochemical Characterization of an Oleyl-coated Magnetite Nanoparticle-Modified Electrode
dc.typeJournal Article
dcterms.source.volume1
dcterms.source.startPage1211
dcterms.source.endPage1218
dcterms.source.issn2196-0216
dcterms.source.titleChemElectroChem
curtin.departmentDepartment of Applied Chemistry
curtin.accessStatusFulltext not available


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