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Doping metal oxides with metallic impurities has been the subject of previous studies for enhanced sensing performance. In this paper, we present a review on syntheses of transition metal doped metal oxide nanostructures using arc discharge method. Tungsten oxide was doped with Palladium, Scandium and Vanadium, respectively. Nickel was chosen to dope Zinc oxide by arc discharge method. It is demonstrated...
Self-organized Nb2O5 nanobelt scaffolds and quasi-aligned bamboo slip-like Nb2O5 nanobelt arrays have been directly fabricated on Nb foils by a hydrothermal reaction in an alkaline solution followed by protonation and annealing. The length and width of the nanobelts can be controlled by varying the fabrication parameters such as reaction temperature, alkaline concentration, and reaction time. The...
The optical response at room temperature of ZnO nanostructures, grown by controlled vapour phase deposition, to low concentrations of NO2 gas mixed in dry-air has been investigated. In particular the quenching in the emission signal, due to the interactions between oxidizing gas molecules and sample surface, has been monitored in excitonic and defect band, as a function of NO2 gas concentration. The...
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