Network mixed metal oxide (V⁴⁺ and Ti⁴⁺) nanostructures as potential material for the detection of trimethylamine

Abstract

Room temperature trimethylamine sensing studies of mixed oxide VO2–TiO2 thin films deposited using the reactive dc magnetron co-sputtering technique.

NO2 Gas Sensing Performance of a VO2(B) Ultrathin Vertical Nanosheet Array: Experimental and DFT Investigation

“…Therefore, structural modification is also a way to improve the gas sensitivity response. A variety of VO 2 nanostructures such as thin films, nanorods, nanosheets, and nanoflowers have been prepared to enhance the sensing performance. − …”

A MOF-derived porous In2O3 flower-like hierarchical architecture sensor: near room-temperature preparation and fast trimethylamine sensing performance

“…These redistribution areas are commonly referred to as space charge areas, which determine the frequency of electron transfer. 3 The adsorbed oxygen molecules capture large amounts of electrons from In 2 O 3 crystals to produce chemically adsorbed oxygen ions, resulting in electron-depleted layers, according to Morrison's gas sensing model. The increase in the depletion layer thickness leads to an increase in the barrier height, which leads to a decrease in the carrier concentration and conductivity.…”

“…The concentration limit for long-term exposure in a TMA environment is 10 ppm, as recommended by the National Institute for Occupational Safety and Health. 3,4 Therefore, monitoring low concentrations of TMA is very important for human health and environmental protection. In addition, the concentration of TMA will increase with the decay degree of seafood.…”

Element doping: a marvelous strategy for pioneering the smart applications of VO2

“…274,275 Moreover, by forming heterostructures with different oxides such as TiO 2 and ZnO, VO 2 -based gas sensors are able to respond to various gases while reducing response times, which is attributed to the increased reaction yields. 280,282 In addition, VO 2 is reported to respond to the concentration changes of water vapor, thus VO 2 could be used as a humidity sensor. 279 In the future, the requirements for gas sensors will become increasingly harsh.…”