Comparison of the enhanced gas sensing properties of tin dioxide samples doped with different catalytic transition elements

A Comparative Study of Structural and Ethanol Gas Sensing Properties of Pure, Nickel and Palladium Doped SnO2 Nanorods Synthesised by the Hydrothermal Method

“…However, evidence shows that higher amount of dopants could act as a structure-directing agent in metal oxide nanostructures. 5,24 (a) (b) Further morphology characterisation was studied using HRTEM analysis. Figure 3(a, c and e) exhibits the morphologies of as-synthesised SnO 2 nanorods.…”

“…4 To overcome these disadvantages, an efficient method is the doping of SnO 2 with transition or noble metals. 5 The fundamental theory of doping is to enhance its catalytic activity and modify its electric resistance for the gas sensor. 6 Several studies have been reported on noble metals-doped (e.g., Pt, Pd, Ag, Au, etc.)…”

Tuning SnO 2 architectures with unitary or composite microstructure for the application of gas sensors

“…The working temperatures can be adjusted by tuning the heating voltage. Further details about the basic testing electrical circuit can be found in our previous work [21]. Gas sensing apparatus applied in our experiment is WS-60A, as shown in Fig.…”

Highly improved hydration level sensing properties of copper oxide films with sodium and potassium doping

“…It is known that doping levels significantly affect the electrical properties of metal oxide films [27][28][29]. Therefore, we studied different doping levels (from 2M% to 8M%) in order to determine the optimum doping concentration to obtain better sensitivity of CuO films to artificial sweat.…”