Author:Oosthuizen, MA; Pretorius, E; Oberholzer, HM; Van der Spuy, WJDate:Oct 2010Particulates less than 100 nm (in at least one diameter) are referred to as nanoparticles. The properties of nanoparticles may differ from those of larger particles from the same bulk material. These unique properties allow the use of ...Read more
Author:Malwela, Thomas; Khumalo, VM; Salehiyan, Reza; Ray, Suprakas SDate:Jul 2018The influences of surface treatment and the concentration of boehmite alumina (BA) particles on polypropylene and polystyrene (PS) (80/20) blends produced via melt compounding were examined. The results show that p-toluene sulfonic acid-treated ...Read more
Author:Nemufulwi, Murendeni I; Swart, HC; Mhlongo, Gugu HDate:Jul 2021In this work, nickel (Ni) substituted zinc ferrite nanoparticles (NPs) with formula NixZn1- xFe2O4 (x = 0, 0.1, 0.3, 0.4) were synthesized using a microwave-assisted hydrothermal method. We further evaluated the effects of Ni substitution on ...Read more
Author:Motshekga, S; Kesavan Pillai, Sreejarani; Ray, SSDate:Mar 2011Carbon nanotubes decorated with SnO2 nanoparticles were prepared by conventional and microwave-assisted wet impregnation. The composites were thoroughly characterized by X-ray diffraction, Raman spectroscopy, BET-surface area measurement, ...Read more
Author:Katata, L; Tshweu, L; Naidoo, Saloshnee; Kalombo, Lonji; Swai, HDate:Oct 2012Efavirenz (EFV) is one of the first-line antiretroviral drugs recommended by the World Health Organisation for treating HIV. It is a hydrophobic drug that suffers from low aqueous solubility (4 lg/mL), which leads to a limited oral absorption ...Read more
Author:Swanepoel, Andri; Du Preez, Ilse; Mahlangu, T; Chetty, A; Klumperman, BDate:Feb 2015Fluorescent dye-doped poly(styrene-co-maleimide) nanoparticles were synthesised and functionalized with amine groups and avidin and the dye-loading was varied. The nanoparticles showed great potential as bioprobes when conjugated with ...Read more
Author:Maxakato, NW; Ozoemena, KI; Arendse, CJDate:Mar 2010Comparative 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
Author:Cele, HM; Ojijo, Vincent O; Chen, H; Kumar, S; Land, K; Joubert, T; De Villiers, MFR; Ray, SSDate:Jun 2014This article reports the modification of optical properties of biodegradable/biocompatible polylactide (PLA) using organically modified montmorillonite (OMMT) for microcantilever applications. PLA/OMMT composite films with various OMMT loadings ...Read more
Author:Moloto, N; Revaprasadu, N; Musetha, PL; Moloto, MJDate:2008A novel ligand to the synthesis of nanoparticles has been employed in this study. A Tetramethylthiuram disulphide cadmium complex (abundant in sulphur atoms) was used as a single-source precursor for the synthesis of CdS nanoparticles. The ...Read more
Author:Mathe, Ntombizodwa R; Nkosi, SS; Motaung, DE; Scriba, Manfred R; Coville, NJDate:May 2015The electronic, magnetic and electrocatalytic properties of bimetallic thiol-capped Pt/Co and Pt/Ni nanoparticles were synthesised using two reducing agents, NaBH(sub4) and N(sub2)H(sub4). X-ray diffraction analysis of the nanoparticles showed ...Read more
Author:Moloto, N; Revaprasadu, N; Musetha, PL; Moloto, MJDate:2009A novel ligand to the synthesis of nanoparticles has been employed in this study. A Tetramethylthiuram disulphide cadmium complex (abundant in sulphur atoms) was used as a single-source precursor for the synthesis of CdS nanoparticles. The ...Read more
Author:Semete, B; Booysen, L; Kalombo, Lonji; Ramalapa, B; Hayeshi, R; Swai, HSDate:Mar 2012The surface of nanoparticles is often functionalised with polymeric surfactants, in order to increase systemic circulation time. This has been investigated mainly for intravenously administered nanoparticles. This study aims to elucidate the ...Read more
Author:Mlalila, N; Swai, H; Kalombo, Lonji; Hilonga, ADate:Dec 2014The goal of this study was to explore the effects of spray-drying on w/o/w double emulsions of methyltestosterone (MT) loaded in a stearic acid matrix. MT-loaded nanoparticles were formulated by a water-in-oil-in-water emulsion technique using ...Read more
Author:Kumar, Neeraj; Mittal, Hemmant; Parashar, V; Ray, Suprakas S; Ngila, JCDate:Feb 2016This research paper reports the synthesis and usage of the polyacrylamide (PAAm) grafted gum karaya (Gk) and nickel sulphide nanoparticle based hydrogel to effectively remove rhodamine 6G dye (R6G) from aqueous solution. Initially, the hydrogel ...Read morecb
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: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:Adekunle, AS; Ozoemena, KIDate:Jun 2010This 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
Author:Wiechers, JW; Musee, NDate:Oct 2010The cosmetic industry is among the first adaptors of nanotechnology through the use of engineered nanoparticles (ENPs) to enhance the performance of their products and meet the customers’ needs. Recently, there have been increasing concerns ...Read more