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ZnS:Mn nanoparticles of different size have been synthesized using a co-precipitation method. So-prepared ZnS:Mn nanoparticles with capping agent (oleic acid) then were characterized using X-ray diffraction(XRD) and UV-Vis spectroscopy. The particle size of the nanoparticles calculated from the XRD patterns has been found in the range 1.45-2.65nm. Absorption spectra have been obtained using UV-Vis...
The flame-made (5/5) pure ZnO and WO3-doped ZnO nanoparticles containing 0.25, 0.50, and 0.75 mol% of WO3 were successfully synthesized by flame spray pyrolysis (FSP). These materials were studied for NO2, CO and H2 gas sensing at different gas concentrations and operating temperatures ranging from 300-400??C in dry air. The crystalline phase, morphology and size of the nanoparticles were characterized...
Magnetoresistance of cobalt-doped zinc oxide and cuprous oxide ferromagnetic nanoparticles with different cobalt concentrations are studied. Zeeman splitting effect is found to play a key role in the electrical transport of our cobalt-doped oxide ferromagnetic nanoparticles. We emphasize that the existence of large Zeeman splitting effect can be used in spintronics devices, because a very large and...
In this study, we have investigated the effect of doping with cobalt and manganese oxide on the photocatalytic activity of nanoparticulate zinc oxide. Zinc oxide powders with controlled particle size, minimal agglomeration, and controlled chemical composition were manufactured by mechanochemical processing. The photocatalytic activity of the powders was measured using the spin trapping technique with...
We report the development of a modified polyelectrolyte deposition technique for building multilayer thin films. The quantum dots of zinc sulphide nanoparticles doped with manganese were synthesized by co-precipitation techniques and the nanoparticles were found to consist of crystallites that were estimated to be around 2.2 nm. The modified polyelectrolyte deposition technique has been used for the...
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