Electrochemical investigation of platinum nanoparticles supported on carbon nanotubes as cathode electrocatalysts for direct methanol fuel cell

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dc.contributor.advisorKhotseng, L.
dc.contributor.advisorNdungu, P.
dc.contributor.authorNtlauzana, Asanda
dc.contributor.otherDept. of Chemistry
dc.contributor.otherFaculty of Science
dc.date.accessioned2014-01-16T11:21:51Z
dc.date.accessioned2024-05-09T10:49:55Z
dc.date.available2011/06/07 08:53
dc.date.available2011/06/07
dc.date.available2014-01-16T11:21:51Z
dc.date.available2024-05-09T10:49:55Z
dc.date.issued2010
dc.descriptionMagister Scientiae - MScen_US
dc.description.abstractThe particles of the Pt metal were well dispersed on carbon nanotubes when EG was used and in isopropanol poor dispersion was observed and no further investigation was done on them. The platinum wt% on the supports observed from EDS was 21.8, 19.10 and 16.74wt% for Pt/EMWCNT, Pt/LPGCNT and Pt/ commercial CNT respectively. Pt/LPGMWCNT showed high electro-catalytic activity of 2.48 mA and active surface area of 76 m2/g, toward oxygen reduction, observed from cyclic voltammogram in iv sulfuric acid. Pt/LPGMWCNT also showed better tolerance toward methanol, however it was not highly active towards methanol, and hence the methanol oxidation peak current observed between 0.75 and 08 potential was the smallest. In this study a wide range of instruments was used to characterize the properties and behavior of Platinum nanoparticles on multi-wall carbon nanotubes. To add to the already mentioned, Scanning electrochemical microscopy (SEM), proton induced x-ray emission (PIXE), scanning electrochemical microscopy (SECM) and Brunauer-Emmett Tellar (BET) were also used.en_US
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/14430
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectElectrochemistryen_US
dc.subjectElectrochemicalen_US
dc.subjectElectrocatalystsen_US
dc.subjectPlatinumen_US
dc.subjectNanoparticleen_US
dc.titleElectrochemical investigation of platinum nanoparticles supported on carbon nanotubes as cathode electrocatalysts for direct methanol fuel cellen_US
dc.typeThesisen_US

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