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Browsing by Author "Ozoemena, KI"

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Detection of antimycolic acid antibodies by liposomal biosensors

Author: Lemmer, Yolandy ; Thanyani, ST ; Vrey, PJ ; Driver, CHS ; Venter, L ; Van Wyngaardt, S ; Ten Bokum, AMC ; Ozoemena, KI ; Pilcher, LA ; Fernig, DG ; Stoltz, AC ; Swai, HS ; Verschoor, JA Date: 2009 Antibodies to mycolic acid (MA) antigens can be detected as surrogate markers of active tuberculosis (TB) with evanescent field biosensors where the lipid antigens are encapsulated in liposomes. Standard immunoassay such as ELISA, where the ... Read more
Dynamics of electrocatalytic oxidation of ethylene glycol, methanol and formic acid at MWCNT platform electrochemically modified with Pt/Ru nanoparticles

Author: Maxakato, NW ; Ozoemena, KI ; Arendse, CJ Date: Mar 2010 Comparative electrocatalytic behavior of functionalized multiwalled carbon nanotubes (fMWCNTs) electrodecorated with Pt/Ru nanoparticles towards the oxidation of methanol (MeOH), ethylene glycol (EG) and formic acid (FA) has been investigated. ... Read more
Effect of preparation temperature and cycling voltage range on molten salt method prepared SnO2

Author: Reddy, MV ; Andreea, LYT ; Ling, AY ; Hwee, JNC ; Lin, CA ; Admas, S ; Loh, KP ; Mathe, Mahlanyane K ; Ozoemena, KI ; Chowdari, BVR Date: Sep 2013 We prepared nano-sized tin (IV) oxide (SnO(sub2)) via molten-salt technique: heating a mixture of tin tetrachloride, lithium nitrate and lithium chloride at 280 °C in air. The powders are characterized by X-ray diffraction and transmission ... Read more
Effects of catalyst-support materials on the performance of fuel cells

Author: Ejikeme, PM ; Makgopa, K ; Ozoemena, KI Date: Jul 2016 The operating life of a fuel cell is expected to be thousands of hours. One of the critical components of the fuel cell that will allow for such long-life cycle is the catalyst-support material. The support material is expected, amongst others, ... Read more
Efficient oxygen reduction reaction using ruthenium tetrakis(diaquaplatinum)octacarboxyphthalocyanine catalyst supported on MWCNT platform

Author: Maxakato, NW ; Mamuru, SA ; Ozoemena, KI Date: Feb 2011 Electrocatalytic reduction of molecular oxygen in alkaline solution using a novel ruthenium tetrakis(diaquaplatinum) octacarboxyphthalocyanine (RuOCPcPt) electrocatalyst supported on multi-walled carbon nanotube electrode has been described. ... Read more
Electro-deposition of Pd on carbon paper and Ni foam via surface limited redox-replacement reaction for oxygen reduction reaction

Author: Modibedi, Remegia M ; Mathe, Mahlanyane K ; Motsoeneng, RG ; Khotseng, LE ; Ozoemena, KI ; Louw, EK Date: May 2014 Pd nanostructured catalysts were electrodeposited by surface-limited redox replacement reactions usingthe electrochemical atomic layer deposition technique. Carbon paper and Ni foam were used as substratesfor the electrodeposition of the ... Read more
Electro-oxidation of ethylene glycol and glycerol at palladium-decorated FeCo@Fe core–shell nanocatalysts for alkaline direct alcohol fuel cells: functionalized MWCNT supports and impact on product selectivity

Author: Fashedemi, OO ; Miller, HA ; Marchionni, A ; Vizza, F ; Ozoemena, KI Date: Apr 2015 Half-cell reactions and alkaline direct ethylene glycol and glycerol fuel cells (DEGFC and DGFC) have been studied on Pd-based ternary core–shell (FeCo@Fe@Pd) nanocatalyst using multi-walled carbon nanotubes bearing carboxylic (MWCNT-COOH) ... Read more
Electro-oxidation of methanol at multi-walled carbon nanotubes decorated with metal nanoparticles

Author: Maxakato, NW ; Ozoemena, KI ; Arendse, CJ Date: 2008 Fuel Cells (FC) employing methanol are extremely attractive as power sources for portable applications. One of the keys to the development of FC is to find a new and improved electrocatalyst. During methanol electro-oxidation on platinum (Pt) ... Read more
Electrocatalytic detection of dopamine at single-walled carbon nanotubes–iron (III) oxide nanoparticles platform

Author: Adekunle, AS ; Agboola, BO ; Pillay, J ; Ozoemena, KI Date: Jun 2010 Electrochemical sensors using edge-plane pyrolytic graphite electrode (EPPGEs) modified with singlewall carbon nanotubes–iron (III) oxide (SWCNT/Fe2O3) nanoparticles for the sensitive detection of dopamine (DA) are described for the first ... Read more
Electrocatalytic oxidation of diethylaminoethanethiol and hydrazine at single-walled carbon nanotubes modified with prussian blue nanoparticles

Author: Adekunle, AS ; Ozoemena, KI Date: Nov 2010 In this work, edged plane pyrolytic graphite electrode EPPGE was modified with functionalised single-walled carbon nanotubes and Prussian blue nanoparticles (PB). The modified electrode was characterised by techniques such as TEM, FTIR, XPS, ... Read more
Electrocatalytic oxidation of ethylene glycol at palladium-bimetallic nanocatalysts (PdSn and PdNi) supported on sulfonate-functionalised multi-walled carbon nanotubes

Author: Ramulifho, T ; Ozoemena, KI ; Modibedi, Remegia M ; Jafta, CJ ; Mathe, Mahlanyane K Date: Apr 2013 Electrocatalytic oxidation of ethylene glycol (EG) in alkaline medium using nano-scaled palladium-based bimetallic catalysts (PdM, where M = Ni and Sn) supported on sulfonated multi-walled carbon nanotubes (SF-MWCNTs) is compared. The bimetallic ... Read more
Electrocatalytic properties of prussian blue nanoparticles supported on poly(m-aminobenzenesulphonic acid)-functionalised single-walled carbon nanotubes towards the detection of dopamine

Author: Adekunle, AS ; Farah, AM ; Pillay, J ; Ozoemena, KI ; Mamba, BB ; Agboola, BO Date: Jun 2012 Edged plane pyrolytic graphite electrode (EPPGE) was modified with and without Prussian blue (PB) nanoparticles and polyaminobenzene sulphonated single-walled carbon nanotubes (SWCNTPABS) using the chemical deposition method. The electrodes ... Read more
The electrochemical atomic layer deposition of Pt and Pd nanoparticles on Ni foam for the electro oxidation of alcohols

Author: Modibedi, Remegia M ; Louw, EK ; Mathe, Mahlanyane K ; Ozoemena, KI Date: 2013 Electrodeposition of Pt and Pd metal by surface limited redox replacement reactions was performed using the electrochemical atomic layer deposition. Carbon paper and Ni foam were used as substrates for metal deposition. Supported Pt and Pd ... Read more
The Electrochemical Atomic Layer Deposition of Pt and Pd nanoparticles on Ni foam for the electrooxidation of alcohols

Author: Modibedi, Remegia M ; Louw, EK ; Ozoemena, KI ; Mathe, Mahlanyane K Date: Oct 2012 Electrodeposition of Pt and Pd metal by surface limited redox replacement reactions was performed using the electrochemical atomic layer deposition. Carbon paper and Ni foam were used as substrates for metal deposition. Supported Pt and Pd ... Read more
Electrochemical capacitive behaviour of multiwalled carbon nanotubes modified with electropolymeric films of nickel tetraaminophthalocyanine

Author: Chidembo, AT ; Ozoemena, KI Date: Nov 2010 Electrochemical capacitive behaviour of the electropolymeric nickel tetra-aminophthalocyanine (poly-NiTAPc) supported on multiwalled carbon nanotube (MWCNT) platform is described. From the data in 1 M H2SO4, the MWCNT-poly-NiTAPc exhibited ... Read more
Electrochemical capacitors based on nitrogen-enriched cobalt (II) phthalocyanine/multi-walled carbon nanotube nanocomposites

Author: Lekitima, JN ; Ozoemena, KI ; Kobayashi, N Date: Nov 2013 A nitrogen-enriched metallophthalocyanine, Cobalt (II)tetrapyrazinoporphyrazine (CoTPyzPz), modified with acid or phenylamine functionalized multiwalled carbon nanotubes (MWCNTaf and MWCNTPhNH2) have been studied for application as an ... Read more
Electrochemical characterization of mixed self-assembled films of water-soluble single-walled carbon nanotube-poly(m-aminobenzene sulfonic acid) and Iron(II) tetrasulfophthalocyanine

Author: Agboola, BO ; Pillay, J ; Makgopa, K ; Ozoemena, KI Date: Sep 2010 The redox activities of water-soluble iron(II) tetrasulfophthalocyanine (FeTSPc) and single-walled carbon nanotube-poly(m-aminobenzene sulfonic acid) (SWCNT-PABS) adsorbed on a gold surface precoated with a self-assembled monolayer (SAM) of ... Read more
Electrochemical performance of BaSnO3 anode material for lithium-ion battery prepared by molten salt method

Author: Nithyadharseni, P ; Reddy, MV ; Ozoemena, KI ; Ezema, FI ; Balakrishna, RG Date: Jan 2016 Perovskite-like structure BaSnO(sub3) ceramic oxide has been prepared by low temperature molten salt method using KOH as a flux and Ba(OH)(sub2) and BaCl(sub2) as precursors. The as-prepared compounds were characterized by various techniques ... Read more
Electrochemistry of 2-dimethylaminoethanethiol SAM on gold electrode: Interaction with SWCNT-poly(m-aminobenzene sulphonic acid), electric field-induced protonation-deprotonation, and surface pKa

Author: Pillay, J ; Agboola, BO ; Ozoemena, KI Date: Jun 2009 Electrochemical behaviour of self-assembled monolayer of 2-dimethylaminoethanethiol (DMAET) on gold electrode, with and without integration with SWCNT-poly(m-aminobenzene sulphonic acid) (SWCNT-PABS) has been probed. It is proved that the ... Read more
Electrochromic and electrochemical capacitive properties of tungsten oxide and its polyaniline nanocomposite films obtained by chemical bath deposition method

Author: Nwanya, AC ; Jafta, CJ ; Ejikeme, PM ; Ugwuoke, PE ; Reddy, MV ; Osuji, RU ; Ozoemena, KI ; Ezema, FI Date: May 2014 Polyanine and its nanocomposite WO3/PANI films were deposited on fluorine doped tin oxide (FTO) glassslides by simple chemical bath deposition method. The morphology structure of the composite film wasstudied using atomic force microscopy ... Read more

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