Transition metal doped metal oxide nanostructures synthesized by arc discharge method

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 that dopants not only change the morphology of metal oxide nanostructures but also help to achieve an improved electrical conductivity. Because it is easy to tailor the morphology by adjusting the arc discharge parameters and dopant can be prescribed in the preparation of the anode material, the arc discharge is considered to be a fast and inexpensive synthesis method for doping which can be used to produce high quality doped metal oxide nanostructures for chemical sensing measurements.