Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jelechem.2003.09.007
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dc.titleApplication of multi-walled carbon nanotubes functionalized with hemin for oxygen detection in neutral solution
dc.contributor.authorYe, J.-S.
dc.contributor.authorWen, Y.
dc.contributor.authorZhang, W.D.
dc.contributor.authorCui, H.-F.
dc.contributor.authorGan, L.M.
dc.contributor.authorXu, G.Q.
dc.contributor.authorSheu, F.-S.
dc.date.accessioned2014-10-16T08:20:43Z
dc.date.available2014-10-16T08:20:43Z
dc.date.issued2004-02-01
dc.identifier.citationYe, J.-S., Wen, Y., Zhang, W.D., Cui, H.-F., Gan, L.M., Xu, G.Q., Sheu, F.-S. (2004-02-01). Application of multi-walled carbon nanotubes functionalized with hemin for oxygen detection in neutral solution. Journal of Electroanalytical Chemistry 562 (2) : 241-246. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jelechem.2003.09.007
dc.identifier.issn00220728
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/93128
dc.description.abstractFunctionalization of multi-walled carbon nanotubes (MWNTs) is of paramount importance for developing new sensors. In this study, a hemin-modified MWNT electrode was successfully constructed. Upon saturation, the amount of adsorbed hemin is estimated as 2.7×10-9 mol cm-2, which is 39 times larger than the value of the hemin monolayer. The electrochemical behavior of the hemin-modified MWNT electrode has been characterized by cyclic voltammetry (CV). The electron-transfer coefficient (α) is found to be 0.38 with a heterogeneous electron transfer rate (k) of 2.9 s-1 for the adsorbed hemin. Both MWNT and hemin-modified MWNT electrodes show ideal reversibility in 5 mM K3[Fe(CN)6] in the range of 0.02-1.00 V s-1, indicating fast electron-transfer kinetics. CV of the hemin-modified MWNT electrode in pH 7.4 phosphate buffer solution (PBS) clearly shows the dioxygen reduction peaks close to 0 V (vs. Ag|AgCl). These results are useful in the development of a novel oxygen sensor for working at a relatively low potential. © 2003 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.jelechem.2003.09.007
dc.sourceScopus
dc.subjectCarbon nanotubes
dc.subjectDioxygen
dc.subjectElectrocatalytic reduction
dc.subjectHemin
dc.typeArticle
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1016/j.jelechem.2003.09.007
dc.description.sourcetitleJournal of Electroanalytical Chemistry
dc.description.volume562
dc.description.issue2
dc.description.page241-246
dc.description.codenJECHE
dc.identifier.isiut000188500500012
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