Gas Chemical Nanosensors with Sensing Elements Based on Metal Oxides

Abstract

This review presents the results of the development of gas chemical nanosensors with sensitive elements based on gallium, cadmium, cerium, cobalt, vanadium, silicon, manganese, niobium, zirconium, aluminum, bismuth, lanthanum, magnesium, palladium, antimony, sodium, samarium, platinum, barium, lithium, and potassium. The developed devices are systematized in accordance with the features of construction of their sensing elements. The analytical capabilities of these devices are considered, and the observable regularities are noted. In particular, the potential of these nanosensors for use in the identification of a large number of inorganic and organic chemical compounds is demonstrated. The effect of the morphology and composition of the coating and temperature of the sensing element on the sensitivity and selectivity of measurements and the response and recovery times is shown.