Author:Mdletshe, Lindokuhle S; Makgwane, Peter R; Ray, Suprakas SDate:Aug 2019This study report on the synthesis of spinel CuFe2O4 nanostructures by surfactant-assisted method. The catalysts were characterized by X-ray diffraction (XRD), laser Raman, transition electron microscope (TEM), scanning electron microscope ...Read more
Author:Scriba, Manfred R; Britton, DT; Härting, MDate:Nov 2012Monocrystalline silicon nanoparticles with a mean diameter of between 30 and 40 nm have been synthesised by hot wire thermal catalytic and spark pyrolysis at a pressure of 40 and 80 mbar respectively. For the production a mixture of the ...Read more
Author:Semete, B; Booysen, L; Lemmer, Yolandy; Kalombo, Lonji; Katata, L; Verschoor, J; Swai, HSDate:Oct 2010The remarkable physicochemical properties of particles in the nanometer range have been proven to address many challenges in the field of science. However, the possible toxic effects of these particles have raised some concerns. The aim of ...Read more
Author:Sikhwivhilu, LM; Kesavan Pillai, Sreejarani; Hillie TKDate:Oct 2010Tin oxide (SnO2) nanoparticles with size range of 19 to 100 nm were successfully synthesized using wet chemical process (i.e. chemical precipitation and sol-gel processes). The results showed that variation of citric acid concentration directly ...Read more
Author:Nofar, M; Salehiyan, Reza; Ray, Suprakas SDate:Jun 2021This article critically reviews the influence of different nanoparticle localization on the final structure-property relationships of polylactide (PLA)-based blend nanocomposites. The effects of kinetics and thermodynamic parameters on the ...Read more
Author:Thwala, Melusi; Radebe, N; Tancu, Y; Musee, NDate:Sep 2014This study investigated the stability of nAg (40-60 nm) and nZnO (10-130 nm) NPs in Hoagland's Medium of half (50HM) and full (100HM) strengths as representative of complex water. The hydrodynamic size dynamics were studied using the Transmission ...Read more
Author:Gayathri, S; Ghosh, OSN; Sathishkumar, S; Sudhakara, S; Jayaramudu, J; Ray, SS; Viswanath, AKDate:Dec 2015In this report we have demonstrated the synthesis of silver doped and pure ZnO nanoparticles using facile chemical precipitation method. The crystal structure, optical and magnetic properties of the synthesized nanocrystals were determined ...Read more
Author:Raleaooa, PV; Roodt, A; Mhlongo, Gugu H; Motaung, David E; Kroon, RE; Ntwaeaborwa, OMDate:Feb 2017The structure, particle morphology, optical and magnetic properties of ZnO, ZnS and ZnO-ZnS nanoparticles prepared by the sol-gel method are reported. ZnO and ZnS were combined at room temperature by an ex situ synthetic route to prepare ...Read more
Author:Mathe, Ntombizodwa R; Scriba, Manfred R; Rikhotso, Rirhandzu S; Coville, NJDate:2017Bimetallic Pt–Ni nanoparticles were synthesized for use as electrocatalysts for the methanol oxidation reaction using a cost-effective microwave-irradiation synthesis procedure that offers precise temperature control. By varying the concentration ...Read more
Author:Kesavan Pillai, Sreejarani; Ray, SS; Scriba, Manfred R; Ojijo, Vincent O; Hato, MJDate:Jul 2013Biocomposites containing ultraviolet (UV) radiation absorbing inorganic nanofillers are of great interest in food packaging applications. The biodegradable polylactide (PLA) composite films were prepared by solvent casting method by incorporating ...Read more
Author:Motloung, Mpho P; Ojijo, Vincent O; Sinha Roy, JayitaDate:Nov 2019This work investigates the effect of cellulose nanocrystal (CN) loading on the properties of polylactide/poly(e-caprolactone) (PLA/PCL) (70/30) blend processed in a twin-screw extruder as a potential material that can be utilized in various ...Read more
Author:Mavuso, MA; Makgwane, Peter R; Ray, Suprakash SDate:Nov 2020The effective Ce3+/Ce4+ redox and oxygen mobility of CeO2 induced by tunable nanostructure morphology has attracted a great interest in photocatalytic organic synthesis. Herein, we report on the microwave‐assisted synthesis of CeO2 with ...Read more
Author:Benadie, Y; Semete, B; Venter, L; Kalombo, Lonji; Driver, C; Jones, AT; Swai, H; Verschoor, JADate:Jun 2008The cell wall envelope of Mycobacterium tuberculosis contains unique high molecular weight lipids. Of these, the most abundant are mycolic acids, an extended family of long 2-alkyl 3-hydroxyl fatty acids, typically 70-90 carbon atoms in length, ...Read more
Author:Ozoemena, KI; Chen, SDate:2016Global experts provide an authoritative source of information on the use of electrochemical fuel cells, and in particular discuss the use of nanomaterials to enhance the performance of existing energy systems. The book covers the state of the ...Read more
Author:Siswana, MP; Ozoemena, KI; Geraldo, DA; Nyokong, TDate:Aug 2010This work reports for the first time that nanostructured nickel (II) phthalocyanine/multiwalled carbon nanotubes composite supported on a basal plane pyrolytic electrode (NiPcNP/MWCNT-BPPGE) could potentially serve as a viable platform for ...Read more
Author:Mabena, LF; Ray, SS; Mhlanga, SD; Coville, NJDate:May 2011The science and technology of catalysis is of fundamental importance to a national economy. Today about 90% of all technical chemicals are manufactured by the use of catalysts. Nanoparticles of noble metals are extremely important materials ...Read more
Author:Kesavan Pillai, Sreejarani; Moloto, N; Ray, SSDate:Feb 2009The organization of metal or semiconductor nanoparticles like quantum dots (QDs) on carbon nanotubes (CNTs) is one good example motivated by the desire to combine the properties of two functional nanoscale materials to achieve a wider range ...Read more
Author:Moloto, N; Mpelane, S; Sikhwivhilu, LM; Ray, Suprakas SDate:2012A microwave-assisted hydrothermal method was used to synthesize ZnO and TiO2 nanostructures. The experimental results show that the method resulted in crystalline monodispersed ZnO nanorods that have pointed tips with hexagonal crystal phase. ...Read more
Author:Kumbhakar, P; Ray, Suprakas S; Stepanov, ALDate:2014Semiconductor and metallic nanomaterials and nanocomposites possess interesting linear absorption, photoluminescence emission, and nonlinear optical properties. Nanomaterials having small particle sizes exhibit enhanced optical emission as ...Read more
Author:Gbadeyan, OJ; Adali, S; Bright, G; Sithole, Bishop B; Onwubu, SDate:Jul 2020The possibility of obtaining calcium carbonate nanoparticles from Achatina fulica shell through mechanochemical synthesis to be used as a modifying filler for polymer materials has been studied. The process of obtaining calcium carbonate ...Read more