Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.electacta.2010.04.025
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dc.titleIon-selective detection of non-intercalating Na+ using competitive inhibition of K+ intercalation in Prussian blue nanotubes sensor
dc.contributor.authorAng, J.Q.
dc.contributor.authorNguyen, B.T.T.
dc.contributor.authorHuang, Y.
dc.contributor.authorToh, C.-S.
dc.date.accessioned2014-10-16T08:48:18Z
dc.date.available2014-10-16T08:48:18Z
dc.date.issued2010-11-30
dc.identifier.citationAng, J.Q., Nguyen, B.T.T., Huang, Y., Toh, C.-S. (2010-11-30). Ion-selective detection of non-intercalating Na+ using competitive inhibition of K+ intercalation in Prussian blue nanotubes sensor. Electrochimica Acta 55 (27) : 7903-7908. ScholarBank@NUS Repository. https://doi.org/10.1016/j.electacta.2010.04.025
dc.identifier.issn00134686
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/95476
dc.description.abstractA nanotubes sensor for Na+ is fabricated using electrodeposition of iron hexacyanoferrate polymer within the nanochannels of a nanoporous metal-coated membrane. The sensing signal is derived from the influence of Na+ on the cathodic peak potential of the voltammetric response of the Prussian blue (PB) nanotubes immersed in a background solution containing K+, giving a 2K+:1e- Nernstian response, instead of the usual 1K+:1e- process in the absence of Na+. A competitive-inhibition reaction scheme is proposed which gives excellent agreement of theoretical values derived from equilibrium consideration, with experimental data obtained under reversible, slow scan rate conditions. A wide linear range over three orders of magnitude for Na sensing can be achieved by simple adjustment of background K+ levels. Specific and accurate detection of Na+ using the PB nanotubes sensor is demonstrated in a solution containing potential interfering ions: K +, Mg2+, Ca2+. © 2010 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.electacta.2010.04.025
dc.sourceScopus
dc.subjectHexacyanoferrate
dc.subjectIon-selective electrode
dc.subjectMembrane
dc.subjectPotassium
dc.subjectPrussian blue
dc.subjectSensor
dc.subjectSodium
dc.typeConference Paper
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1016/j.electacta.2010.04.025
dc.description.sourcetitleElectrochimica Acta
dc.description.volume55
dc.description.issue27
dc.description.page7903-7908
dc.description.codenELCAA
dc.identifier.isiut000284434700017
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