Binary (ZnO, Fe2O3) and ternary (ZnFe2O4) gas-sensitive oxide materials are synthesized, and the correlation between their sensitivity to ethanol vapor and the functional chemical composition of the...

Zinc and iron oxide (ZnO, Fe2O3) and zinc ferrite (ZnFe2O4) nanopowders are obtained by chemical co-precipitation. The gas-sensitive properties of materials upon exposure to acetone and ethanol...

Approaches are being developed to create composite materials with a fractal-percolation structure based on intercalated porous matrices to increase the sensitivity of adsorption gas sensors. Porous silicon, nickel-containing porous silicon, and zinc oxide have been synthesized as materials for such structures. Using the impedance spectroscopy method, it has been shown that the obtained materials demonstrate high sensitivity to organic solvent vapors and can be used in gas sensors. A model is proposed that explains the high sensitivity and inductive nature of the impedance at low frequencies, considering the structural features and fractal-percolation properties of the obtained oxide materials.

The published works representing the current state of research in the field of the synthesis and application of zinc stannate are reviewed. The data on crystalline modifications of ZnSnO3...

A model of sensitive layers with built-in percolation-cluster structure near the percolation threshold is developed. It is shown that, in the case of the interaction of such gas-sensitive layers with reducing gases, the value of the gas sensitivity can exceed the typical values by several orders of magnitude. The specific features of variation in the impedance response of the percolation structures in the vicinity of the percolation threshold in air and in the case of the influence of a reducing gas are considered.

The formation of zinc stannate nanostructures, which are of interest for sensorics, solar power, and transparent conductive electronics, has been considered. The structures have been synthesized by the hydrothermal method, with zinc oxide nanorods used as references in the case of synthesis time variation, and studied by X-ray photoelectron spectroscopy. This method has been shown to be effective for analyzing zinc stannate formation.