Ethanol sensing materials and device using Co2+, Zn2+, Cr2+ doped α-Fe2O3 nano-particles with room temperature response/ recovery

Fabrication of a room-temperature NO2 gas sensor with high performance at the ppb level using an rGO/BiOCl heterostructure

“…Additionally, the Williamson–Hall plot between β cos θ and 4sin θ was used to determine the strain developed by forming a nanocomposite using eqn (7): 41 Where ε represents the generated strain in the material and represents the intercept of the fitted line. The W–H plot for BiOCl and rGO/BiOCl has been shown in Fig.…”

A three-dimensional ZnO/TUD-1 nanocomposite-based multifunctional sensor for humidity detection and wastewater remediation

“…ZnO, being a semiconducting material, acts as a sensitizing agent when incorporated into the mesoporous structure of TUD-1. 10 The interactions between ZnO and mesoporous silica nanoparticles further enhance the sensor's capacity to adsorb and desorb water molecules, resulting in rapid sensitivity and a more pronounced change in resistance in response to fluctuations in humidity levels. Nevertheless, a shift in the trend is noticeable at higher ZnO concentrations within silica, exemplified by the ZnO/TUD-1 (10) sensor.…”

“…10 The interactions between ZnO and mesoporous silica nanoparticles further enhance the sensor's capacity to adsorb and desorb water molecules, resulting in rapid sensitivity and a more pronounced change in resistance in response to fluctuations in humidity levels. Nevertheless, a shift in the trend is noticeable at higher ZnO concentrations within silica, exemplified by the ZnO/TUD-1 (10) sensor. In contrast to the earlier findings of improved conductivity, a reduction in conductivity becomes apparent.…”

“…A scavenger test was conducted using EDTA (ethylenediaminetetraacetic acid), benzoquinone, and isopropanol in order to investigate the active intermediate species involved in the photocatalytic degradation process facilitated by the bestperforming specimen, ZnO/TUD-1 (10). The results revealed hydroxyl radicals ( OH) as the active intermediate species, contributing significantly to the degradation mechanism as shown in Fig.…”

“…The highly porous structure of TUD-1 beholds a large surface area for moisture adsorption and also facilitates the diffusion of moisture through its interconnected porous channels. 9,10 TUD-1 with ZnO introduces a novel synergy to its original properties. This structural advantage enhances the sensor's response time and sensitivity.…”