Enhanced ethanol sensing performance of Fe: TiO2 nanowires and their mechanism of sensing at room temperature

Multifunctional Screen-Printed TiO2 Nanoparticles Tuned by Laser Irradiation for a Flexible and Scalable UV Detector and Room-Temperature Ethanol Sensor

“…Indeed, previous studies have shown that TiO 2 is an appealing material for ethanol sensing, due to its wide-band gap semiconductor properties and high surface reactivity to gases. Various methods have been explored to optimize ethanol-sensing properties of TiO 2 , such as the use of nanostructured TiO 2 -like nanowires, nanotubes, or/and by doping it with noble metals, like silver, iron, platinum. − Moreover, all of these examples of TiO 2 -based ethanol sensors either work at temperatures above 150 °C or/and require a high calcination temperature, which limits their integration into flexible substrates. Here, we propose a robust solution for producing ethanol sensors based on TiO 2 nanoparticles printed on a flexible substrate, operating at room temperature.…”

High thermal radiation of Ca-doped lanthanum chromite

“…5 and 8, we see that Ca-doped LaCrO 3 exhibits a higher infrared absorptance than LaCrO 3 . This clearly demonstrates that doping can alter the optical energy band and inuence the spectral properties of a material, [59][60][61][62] which in the case of Ca 2+ doping, is due to an introduction of an impurity energy level of Cr 4+ or Cr 6+ in the LaCrO 3 forbidden gap.…”

Gas Sensor Based on ZnO Nanostructured Film for the Detection of Ethanol Vapor

“…Thus, when the surface of the ZnO<La> layer contacts with air, oxygen molecules with sufficient activation energy adsorb on the sensor surface by trapping electrons from the conduction band of ZnO and form chemisorbed oxygen species (O − (ads), O 2− (ads) and O 2 − (ads)), leading to the formation of the electron depletion layer. The supposed reactions can be described as follows [40][41][42]:…”