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dc.contributor.authorAlwis, L. K. H. K.
dc.contributor.authorMucalo, Michael R.
dc.contributor.authorIngham, Bridget
dc.date.accessioned2014-01-28T01:25:37Z
dc.date.available2014-01-28T01:25:37Z
dc.date.copyright2013-09-07
dc.date.issued2013
dc.identifier.citationAlwis, L. K. H. K., Mucalo, M. R., & Ingham, B. (2013). Anodically polarized nickel electrodes in DMSO or DMF solutions of pseudohalide ions: IR spectroelectrochemical studies. Journal of the Electrochemical Society, 160(11), H803-H812.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8428
dc.description.abstractA novel subtractively normalized interfacial Fourier transform infrared spectroscopic (SNIFTIRS) investigation of anodically polarized nickel electrodes in pseudohalide-containing DMF or DMSO solutions (i.e. OCN⁻, SCN⁻, SeCN⁻), in supporting electrolyte, tetrabutylammonium perchlorate (TBAP), is presented. In general, the data showed that nickel demonstrated irreversible anodic dissolution in all solutions studied at very high values of the applied potential, > +500 mV (AgCl/Ag). The predominant speciation of nickel in these systems was as complex ions consisting of Ni²⁺ ion complexed to pseudohalide ions and solvent molecules. Insoluble films and dissolved CO₂ were also detected, though mostly in the Ni/OCN⁻ systems studied. Ni(II)/pseudohalide complex ion species detected were modeled using solutions containing Ni²⁺ ion mixed with pseudohalide ion in different mole ratios. In general, the Ni/OCN⁻ electrochemical system behaved differently relative to those of Ni/SCN⁻ and Ni/SeCN⁻ due to the difference in colors observed in cell solutions after SNIFTIRS experiments which was mirrored in the model solutions. Ni(II)-cyanate species had a different, coordination geometry and gave a characteristic bright blue color due possibly to Ni(NCO)₄²⁻ ion while Ni(II) thiocyanate and selenocyanate complex ion species had octahedral coordination geometries containing solvent and one coordinated pseudohalide ion and formed greeny yellow solutions.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherELECTROCHEMICAL SOC INCen_NZ
dc.relation.ispartofJournal of the Electrochemical Society
dc.rights© 2013 The Electrochemical Society
dc.subjectchemistryen_NZ
dc.titleAnodically polarized nickel electrodes in DMSO or DMF solutions of pseudohalide ions: IR spectroelectrochemical studiesen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1149/2.010311jesen_NZ
dc.relation.isPartOfJournal of the Electrochemical Societyen_NZ
pubs.begin-page803en_NZ
pubs.elements-id38881
pubs.end-page812en_NZ
pubs.issue11en_NZ
pubs.volume160en_NZ


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