Sol–gel derived TiO2:ZrO2 multilayer thin films for humidity sensing application

Synthesis and Humidity Sensing Investigations of Nanostructured ZnSnO<sub>3</sub>

“…Due to high cationic charge density of metal oxide surface, the electrostatic force is high enough to break one of the O-H bonds of the H 2 O and form a strong chemical bond between M + and OH − . Thus initial layer is chemisorbed [40].…”

Structure and electrical conductivity of porous zirconium titanate ceramics produced by mechanochemical treatment and sintering

“…The impedance spectra consists of single well-shaped semicircle related to the polarization processes in porous ceramics sample, whereas low frequency spur which becomes visible at higher relative humidity (Fig. 6 b) is attributed to the effects at the sample-electrode interface [19]. It is well known that the impedance semicircle can be represented by the equivalent circuit consisting of resistor and capacitor in parallel.…”

Humidity Sensors Based on High Performance Graphene/Zirconium Dioxide Nanocomposite Material

“…We began by mixing 3.22 g zirconium oxychloride (ZrClO 2 ·8H 2 O) with 50 ml anhydrous alcohol under magnetic stirring for 30 min while heating the solution to 30 ℃. (3) The second step entailed the preparation of graphene powder at specific concentrations. The graphene samples were added to the ZrO 2 solution and held at 30 ℃ for 3 d until a powder had formed.…”

“…Figure 9 shows in the curves, the product exhibited excellent stability, and there was no significant change in the impedance during this period. We can see from the picture that as the temperature increases, the impedance of the sensor decreases, the reason would be that increasing temperature induces more H 3 …”