Modification of glassy carbon electrode (GCE) with prussian blue as a mediator on carbon nanotube materials through sequential deposition

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dc.contributor.authorFarah, Abdullahi Mohamed
dc.contributor.co-supervisorModise, S. J., Prof.en_US
dc.contributor.supervisorDikio, E. D., Prof.en_US
dc.date.accessioned2019-09-04T21:59:27Z
dc.date.available2019-09-04T21:59:27Z
dc.date.issued2012-08
dc.descriptionM. Tech. (Department of Chemistry, Faculty of Applied and Computer Sciences), Vaal University of Technology.en_US
dc.description.abstractPrussian blue (PB) nanoparticles were synthesized from FeCl3.6H2O, K4[Fe(CN)6].3H2O, and from Fe(NO3)3.9H2O and K4[Fe(CN)6].3H2O, and then characterized by Fourier transform infrared (FT-IR), Ultraviolet-visible spectroscopy, X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), Scanning electron microscopy (SEM), Raman spectroscopy and thermogravimetric analysis. Graphene oxide and carbon nanotubes were also synthesized and characterized. PB nanoparticles, carbon nanotubes (CNT), graphene oxide (GO) and cetyltrimethylammonium bromide (CTAB) were sequentially deposited onto glassy carbon electrode surface to form chemically modified electrode for the detection of hydrogen peroxide (H2O2) and dopamine. The following electrodes were fabricated, GC-PB, GC-MWCNT, GCGO, GC-CTAB, GC-MWCNT-PB, GC-GO-PB and GC-CTAB-PB. Cyclic and Square wave voltammetric techniques were used to measure the hydrogen peroxide detectability of the electrodes at pH ranges of (3 - 7.4) in 0.1M phosphate buffer solution, in the absence or presence of 25 μL of H2O2. The GC-CNT-PB, GC-GO-PB,GC-CTAB-PB electrodes showed a good response for the detection of hydrogen peroxide in both acidic and neutral media while the GCPB electrode only showed good response in acidic media.en_US
dc.identifier.urihttp://hdl.handle.net/10352/387
dc.language.isoenen_US
dc.publisherVaal University of Technologyen_US
dc.subjectGlassy carbon electrode (GCE)en_US
dc.subjectPrussian blueen_US
dc.subjectCarbon nanotube materialsen_US
dc.subjectNanoparticlesen_US
dc.subjectElectrochemistryen_US
dc.subjectGrapheneen_US
dc.subject.lcshDissertations, Academic -- South Africa.en_US
dc.subject.lcshElectrochemistry.en_US
dc.subject.lcshCarbon nanotubes.en_US
dc.titleModification of glassy carbon electrode (GCE) with prussian blue as a mediator on carbon nanotube materials through sequential depositionen_US
dc.typeThesisen_US
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