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.author Abdullahi Mohamed, Farah
dc.date.accessioned 2019-09-04T21:59:27Z
dc.date.available 2019-09-04T21:59:27Z
dc.date.issued 2012-08
dc.identifier.uri http://hdl.handle.net/10352/387
dc.description.abstract Prussian 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.language.iso en en_US
dc.publisher Vaal University of Technology en_US
dc.subject applied; computer science; chemistry; modification; glassy; carbon; electrode; GCE; prussian blue; carbon nanotube; materials en_US
dc.title Modification of glassy carbon electrode (GCE) with prussian blue as a mediator on carbon nanotube materials through sequential deposition en_US
dc.type Thesis en_US


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