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Browsing by Subject "Impedance spectroscopy"

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Comparative surface electrochemistry of Co and Co3O4 nanoparticles: nitrite as an analytical probe

Author: Adekunle, AS ; Ozoemena, KI Date: Dec 2010 This study described the decoration of edge plane pyrolytic graphite electrode (EPPGE) with synthesised cobalt and cobalt oxide nanoparticles. The modified electrode was characterised by techniques such as TEM, FESEM, XRD, EDS, cyclic voltammetry ... 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
Electron migration and stability of dye solar cells

Author: Le Roux, Lukas J ; Hietkamp, S Date: Jul 2008 Dye-sensitised photoelectrochemical solar cells with four different electrolyte combinations were assembled and characterised using current voltage measurements. The effects that the solvents (acetonitrile - ACN and propionitrile - PN) have ... Read more
Electron transfer dynamics across self-assembled N-(2-mercaptoethyl) octadecanamide/mycolic acid layers: impedimetric insights into the structural integrity and interaction with anti-mycolic acid antibodies

Author: Ozoemena, KI ; Mathebula, NS ; Pillay, J ; Toschi, G ; Verschoor, JA Date: 2010 The integrity and properties of mycolic acid (MA) antigens integrated into a self-assembled monolayer (SAM) of N-(2-mercaptoethyl)octadecanamide, (MEODA), on a gold electrode have been interrogated using cyclic voltammetry (CV) and electrochemical ... Read more
Electron transport and electrocatalytic properties of MWCNT/nickel nanocomposites: hydrazine and diethylaminoethanethiol as analytical probes

Author: Adekunle, AS ; Ozoemena, KI Date: Jun 2010 This work describes the electron transport and electrocatalytic properties of chemically-synthesized nickel (Ni) and nickel oxide (NiO) nanoparticles supported on multi-walled carbon nanotubes (MWCNT) platforms. Successful modification of the ... Read more
Electrosynthesised metal (Ni, Fe, Co) oxide films on single-walled carbon nanotube platforms and their supercapacitance in acidic and neutral pH media

Author: Adekunle, AS ; Ozoemena, KI Date: Jul 2011 Supercapacitive properties of single-walled carbon nanotubes/metal oxides nanocomposites (SWCNT-MO where M=Ni, Fe, Co) have been described. The SWCNT-MO nanocomposites was confirmed with SEM, EDX and XPS techniques. Supercapacitive properties ... Read more
Nickel(II) tetra-aminophthalocyanine modified MWCNTs as potential nanocomposite materials for the development of supercapacitors

Author: Chidembo, AT ; Ozoemena, KI ; Agboola, BO ; Gupta, V ; Wildgoose, GG ; Compton, RG Date: Nov 2010 The supercapacitive properties of nickel(II) tetraaminophthalocyanine(NiTAPc)/multi-walled carbon nanotube(MWCNT) nanocomposite films have been interrogated for the first time and found to possess a maximum specific capacitance of 981 ± 57 F ... Read more
Probing the electrochemical behaviour of SWCNT-cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions

Author: Adekunle, AS ; Pillay, J ; Ozoemena, KI Date: May 2010 The electrochemical decoration of edge plane pyrolytic graphite electrode (EPPGE) with cobalt and cobalt oxide nanoparticles integrated with and without single-walled carbon nanotubes (SWCNTs) is described. Successful modification of the ... Read more
Tuning the physico-electrochemical properties of novel cobalt (II) octa[(3,5-biscarboxylate)-phenoxy] phthalocyanine complex using phenylamine-functionalised SWCNTs

Author: Agboola, BO ; Ozoemena, KI ; Nyokong, T ; Fukuda, T ; Kobayashi, N Date: Mar 2010 The integration of phenylamine-functionalised SWCNTs (SWCNT-phenylamine) with a novel cobalt (II) octa[(3,5-biscarboxylate)-phenoxy] phthalocyanine (CoOBPPc) complex has been described. The physical and electrochemical properties of the ... Read more

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Browsing by Subject "Impedance spectroscopy"

Browsing by Subject "Impedance spectroscopy"

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