Author:Modibedi, Remegia M; Louw, E; Mathe, Mahlanyane K; Ozoemena, KDate:Mar 2013Fuel cells continue to be investigated as alternative energy source because of the high energy demand worldwide. The electrocatalytic reduction of oxygen is of great importance in fuel cells and sensors. Noble metals have proved to be the ...Read more
Author:Mkhohlakali, A; Fuku, X; Seo, MH; Modibedi, Remegia M; Khotseng, L; Mathe, MDate:Oct 2022An alternative electrosynthesis of PdTe, using the electrochemical atomic layer deposition (E-ALD) method, is reported. The cyclic voltammetry technique was used to analyze Au substrate in copper (Cu2+), and a tellurous (Te4+) solution was ...Read more
Author:Emej, IC; Ama, OM; Khoele, K; Osifo, PO; Ray, Suprakash SDate:Mar 2021Human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS) causes morbidity and mortality in infected patients. These epidemics are significantly reduced and treated globally with antiretroviral drugs (ARVDs). However, ...Read more
Author:Schoeman, JJ; van Staden, JFDate:20 Aug 1997Electro-osmotic pumping (EOP) theory and its characteristics (transport numbers, brine concentration, current density, current efficiency, electro-osmotic coefficients, etc.) of Selemion AMV and CMV ion-exchange membranes were studied. The ...Read more
Author:Maumau, Thandiwe R; Modibedi, Remegia M; Mathe, Mahlanyane KDate:May 2018Mono and binary Pd-Au based catalysts were synthesized using the NaBH4 assisted ethylene glycol reduction method. The catalysts were supported on Vulcan XC 72 carbon black and denoted as Pd/C, Au/C, Pd(Au/C) and Pd-Au/C co-reduction. Pd:Au ...Read more
Author:Fashedemi, OO; Miller, HA; Marchionni, A; Vizza, F; Ozoemena, KIDate:Apr 2015Half-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
Author:Maxakato, NW; Ozoemena, KI; Arendse, CJDate:2008Fuel 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
Author:Mathe, Mahlanyane K; Mkwizu, T; Modibedi, Remegia MDate:2012The CSIR undertakes research in the Electrocatalysis of fuel cells and for hydrogen production. The Hydrogen South Africa (HySA) strategy supports research on electrocatalysts due to their importance to the national beneficiation strategy. ...Read more
Author:Adekunle, AS; Agboola, BO; Pillay, J; Ozoemena, KIDate:Jun 2010Electrochemical 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
Author:Fuku, Xolile G; Modibedi, Remegia MDate:Dec 2019Nanoscience has shown itself to be one of the most exciting areas in science, with experimental developments being driven by pressing demands for new technological applications. It is a highly multidisciplinary research field, and the ...Read more
Author:Adekunle, AS; Ozoemena, KIDate:Nov 2010In 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
Author:Ramulifho, T; Ozoemena, KI; Modibedi, Remegia M; Jafta, CJ; Mathe, Mahlanyane KDate:Apr 2013Electrocatalytic 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
Author:Matseke, Mphoma S; Zheng, Haitao; Mallick, KaushikDate:Nov 2019Spinel metal oxides with the general formula of AB(sub2)O(sub4) have attracted a lot of attention over the past few decades as promising cathode materials for oxygen reduction reaction (ORR) in fuel cells. This is due to their changeable ...Read more
Author:Adekunle, AS; Farah, AM; Pillay, J; Ozoemena, KI; Mamba, BB; Agboola, BODate:Jun 2012Edged 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
Author:Modibedi, Remegia M; Louw, EK; Mathe, Mahlanyane K; Ozoemena, KIDate:2013Electrodeposition 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
Author:Modibedi, Remegia M; Louw, EK; Ozoemena, KI; Mathe, Mahlanyane KDate:Oct 2012Electrodeposition 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
Author:Louw, EK; Modibedi, Remegia M; Ozoemena, K; Mathe, Mahlanyane KDate:Jul 2012The cost of the platinum catalyst hinders the progress of direct methanol fuel cells (DMFCs) into the commercial world. Electrochemical atomic layer deposition (ECALD) method was used to reduce the amount of Pt used and to increase its ...Read more
Author:Chidembo, AT; Ozoemena, KIDate:Nov 2010Electrochemical 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