Author:Chakraborty, A; Singh, JK; Sen, D; Pityana, Sisa L; Manna, I; Krishna, S; Dutta Majumdar, JDate:Sep 2020This study aims at the development of composite surface on austenitic stainless (AISI 304 stainless steel) by laser surface alloying with WC and Co in the weight ratio of 4:1. Laser processing has been carried out by laser melting of sandblasted ...Read more
Author:Mtshweni, Jabu; Modiba, FSDate:Sep 2021Information and communication technologies (ICTs) have transformed almost every aspect of our lives as citizens, employees, parents, politicians, businesses, leaders, and as members of any type of a community. ICTs have demonstrated across ...Read more
Author:Mtshweni, Jabu; Modiba, FSDate:Sep 2021Information and communication technologies (ICTs) have transformed almost every aspect of our lives as citizens, employees, parents, politicians, businesses, leaders, and as members of any type of a community. ICTs have demonstrated across ...Read more
Author:Rohwer, Mark B; Modibedi, Remegia M; Ozoemena, KIDate:Feb 2015The impact of microwave irradiation on the structure and electrochemistry of monodispersed palladium nanoparticles is reported for the first time. When compared to the Pd that was not subjected to microwave treatment, the microwaved Pd ...Read more
Author:Adams, D; Malgas, GF; Smith, RD; Massia, SP; Alford, TL; Mayer, JWDate:Nov 2006A sol was spun on single crystal silicon substrates at a spin-rate of 3000–5000 rpm followed by a low temperature cure to form a stable sol–gel/ silicon structure. Good quality crystalline HA films of thickness ~300–400 nm were obtained by ...Read more
Author:Botha, GE; Oliveira, JC; Ahrné, LDate:Jan 2012Variable power programmes for microwave assisted air drying of pineapple were studied. The pineapple pieces were pre-treated by osmotic dehydration in a 55º Brix sucrose solution at 40ºC for 90 minutes. Variable power output programmes were ...Read more
Author:Kesavan Pillai, Sreejarani; Moyo, Lumbidzani; Ray, Suprakas S; Scriba, Manfred RDate:Nov 2012Organically modified phyllosilicates (montmorillonite and palygorskite) using Arquad 2HT-75 surfactant were effectively synthesized utilizing a microwave irradiation technique. The microwave method was successfully used also for the surface ...Read more
Author:Jafta, CJ; Raju, Kumar; Mathe, Mahlanyane K; Manyala, N; Ozoemena, KIDate:Feb 2015A hybrid synthesis procedure, combining microwave irradiation and conventional annealing process, is described for the preparation of lithium-rich manganese-rich cathode materials, Li[Li0.2Mn0.54Ni0.13Co0.13]O2 (LMNC) and its aluminum-doped ...Read more
Author:Makgabutlane, B; Nthunya, LN; Nxumalo, EN; Musyoka, Nicholas M; Mhlanga, SDDate:Sep 2020Class F South African coal fly ash was used as a precursor for the synthesis of zeolite A via complete microwave irradiation. To attain optimal conditions for the synthesis of zeolite A with minimum impurities, the microwave synthesis time, ...Read more
Author:Motshekga, S; Kesavan Pillai, Sreejarani; Ray, Suprakas S; Krause, R; Jalama, KDate:01 Sep 2010Metal nanoparticles coated onto carbon nanotubes (CNTs) provide a way to obtain novel materials with useful properties for gas sensing and catalyst application. Metal oxides are well-known materials suitable for detecting a wide spectrum of ...Read more
Author:Sikhwivhilu, L; Ray, Suprakas SDate:01 Sep 2010Synthesis and engineering of the nanostructured semiconductors based on metal oxides have received considerable attention due to their unique physical and chemical properties, and their potential applications in industry and technology. While ...Read more
Author:Nkosi, FP; Jafta, CJ; Kebede, Mesfin A; Le Roux, Lukas J; Mathe, Mahlanyane K; Ozoemena, KIDate:Mar 2015Microwave irradiation at the pre- and post-annealing steps of the synthesis of LiAl(subx)Mn(sub2-x)O(sub4) (x = 0 and 0.3) spinel cathode materials for rechargeable lithium ion battery is a useful strategy to optimize the average manganese ...Read more
Author:Rohwer, Mark B; Ozoemena, K; Modibedi, Remegia MDate:Nov 2012Fuel cells provide a means for the direct conversion of fuels to electricity. Direct alcohol fuel cells (DAFCs) are particularly attractive because liquid fuels such as methanol or ethanol have a relatively low cost, a high volumetric energy ...Read more
Author:Monchusi, BDate:Oct 2012As part of the ongoing development of novel mining methods, the CSIR has developed alternative methods to break rocks. In this case, we show the application of microwave energy to break narrow tabular ore bodies.Read more
Author:Oboirien, BO; North, Brian C; Sadiku, ERDate:Sep 2013Fluidised bed gasification (FBG) is a clean coal technology suitable for power and fuel generation from low grade coals. However, the resulting bottom ash presents some disposal challenges to the power plants and the environment. The production ...Read more
Author:Jafta, CJ; Mathe, Mahlanyane K; Manyala, N; Roos, WD; Ozoemena, KIDate:Aug 2013The LiMn1.5Ni0.5O4 spinel is an important lithium ion battery cathode material that has continued to receive major research attention because of its high operating voltage (∼4.8 V). This study interrogates the impact of microwave irradiation ...Read more