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Browsing by Author "Nonjola, Patrick NT"

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Characterization of an anionic-exchange membranes for direct methanol alkaline fuel cells

Author: Abuin, GC ; Nonjola, Patrick NT ; Franceschini, EA ; Izraelevitch, FH ; Mathe, Mahlanyane K ; Corti, HR Date: Jun 2010 Ammonium quaternized polymers such as poly (arylene ether sulfones) are being developed and studied as candidates of ionomeric materials for application in alkaline fuel cells, due to their low cost and promising electrochemical properties. ... Read more
Characterization of anionic-exchange membranes for direct alcohol alkaline fuel cells

Author: Abuin, GC ; Nonjola, Patrick NT ; Franceschini, E ; Izraelevitch, F ; Corti, H ; Mathe, Mahlanyane K Date: Jun 2009 Recently, alkaline direct alcohol fuel cells have received increased attention for the following reasons: anion charge carrier (OH) movement from cathode to anode, opposite to the movement of protons in proton exchange membranes (PEM), may ... Read more
Chemical modification and characterization of quaternized polysulfones.

Author: Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Hietkamp, S Date: Dec 2008 Synthesis and characterization of anion-exchange membranes (AEMs) using polysulfones is described. The modification process of polysulfones involves two steps: Firstly, by introducing chloromethyl groups followed by quaternization reaction ... Read more
Chemical modification of polysulfone: composite anionic exchange membrane with TiO2 nano-particles

Author: Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Modibedi, Remegia M Date: Apr 2013 Synthesis of quaternary polysulfone/Titanium dioxide (QPSf/TiO2) nanocomposite membranes by the recasting procedure as suitable electrolyte in alkaline fuel cells is described. The composite membranes were characterized by ionic conductivity ... Read more
Development of nano-composite membranes to improve alkaline fuel cell performance

Author: Nonjola, Patrick NT ; Makayonke, N Date: Sep 2011 The work presented here describes modification of commercially available polysulfone (PSU) as well as the formation of nano-composite membrane i.e. TiO2 nano particles incorporated into anion exchange polymer matrix. Read more
Fuel cell research: Towards efficient energy

Author: Rohwer, Mark B ; Mathe, Mahlanyane K ; Hietkamp, S ; Madidedi, RM ; Nonjola, Patrick NT ; Masombuka, T Date: Nov 2008 Fuel cells can contribute to energy security, because they possess the potential to convert potentially renewable fuels such as hydrogen, methanol or ethanol cleanly and efficiently into electrical energy. They are of particular interest to ... Read more
A high selectivity quaternized polysulfone membrane for alkaline direct methanol fuel cells

Author: Abuin, GC ; Franceschini, EA ; Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Modibedi, Remegia M ; Corti, HR Date: 01 Apr 2015 Alkaline membranes based on quaternized poly(arylene ether sulfone) (QPAES) were characterized in relation to their water and methanol uptake, methanol permeability, electrical conductivity, and mechanical properties. The performance of QPAES ... Read more
The proton conductivity and mechanical properties of Nafion®/ ZrP nanocomposite membrane

Author: Sigwadi, R ; Dhlamini, MS ; Mokrani, T ; Nemavhola, F ; Nonjola, Patrick NT ; Msomi, PF Date: Aug 2019 Zirconium phosphates (ZrP) were incorporated into Nafion® 117 membrane by impregnating method to obtain a reduced methanol permeation and improved proton conductivity for fuel cell application. The mechanical properties and water uptake of ... Read more
Synthesis and characterisation of alkaline anionic-exchange membranes for direct alcohol fuel cells

Author: Nonjola, Patrick NT ; Mathe, Mahlanyane K ; Hietkamp, S Date: Dec 2007 Great effort in research and development has been made over the years to improve and commercialize new electricity generating systems. To provide an alternative energy carrier, an appropriate conversion technology is needed to form high quality ... Read more
Synthesis, electrochemistry and cytotoxicity of ferrocene-containing amides, amines and amino-hydrochlorides

Author: Nonjola, Patrick NT ; Siegert, U ; Swarts, JC Date: Feb 2015 Ferrocenylamides, Fc–(CH(sub2))subn–CONH(sub2) with n = 0 (3a), 1 (3b), 2 (3c), and 3 (3d) and Fc =ferrocenyl = FeII(C(sub5)H(sub5))(C(sub5)H(sub4)), were synthesised by reacting aqueous ammonia with the appropriate acid chlorides, ... Read more

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Browsing by Author "Nonjola, Patrick NT"

Browsing by Author "Nonjola, Patrick NT"

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All of ResearchSpace

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