Inverse and distorted Co₂SnO₄ cubic spinel thin films for dimethylamine detection at room temperature

Abstract

The wide spreading of volatile organic compounds (VOCs) is a threat to human health and environmental air quality. Dimethylamine is a highly toxic amine, which can directly affect the human...

Manganese doped two-dimensional zinc ferrite thin films as chemiresistive trimethylamine gas sensors

“…Compared to the other interfering vapors, TMA has a very weak and unstable bond strength, which makes it easy for it to react with the highly catalytic divalent Mn/Zn 2+ cation located at the tetrahedral location in the spinel structure. 31,72 All other gases have larger dipole moments than TMA, which accounts for the latter's higher permeation capacity and thus stronger responsiveness and selectivity. Compared to the other vapors, TMA molecules give electrons to the ZFM1 thin film surface quickly even at ambient temperature.…”

Incompatibility of Pure SnO2 Thin Films for Room-Temperature Gas Sensing Application

“…Recovery time is the time taken by the sensor to reach 10% of the initial value on the removal of target gas . The target gas concentration in the chamber was calculated using the formula ,,− C ppm = ρ × R × V normall × T × 10 6 V normalc × MW × P where V l is the volume of liquid gas, C ppm is the concentration of gas, MW is the molecular weight of gas, V c is the volume of the chamber, P c is the pressure inside the chamber, which is 1 atm, ρ is the density of gas, R is the ideal gas constant, and T is the temperature of the chamber.…”