Affiliation:
1. “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
Abstract
The identification of an unknown gaseous species or the composition of a gaseous mixture can be performed using various experimental techniques such as: mass spectrometry, chromatography, nuclear magnetic resonance (NMR), infrared (IR), X-Rays, or by combining these analytical techniques (in automated analyzers). Unfortunately, these techniques use highly expensive equipment and require the use of qualified personnel. Using gas sensors is a viable and inexpensive alternative. The most commonly used sensors in the field are resistive type chemosensors (chemiresistors), due to their simple detection mechanism and low manufacturing costs. The detection principle of these sensors is based on the catalytic reaction between the sensitive material of the sensor and the target gas. This reaction occurs with the release or consumption of electrons, influencing the overall electrical resistance of the sensor. This review describes various MOX-based chemiresistors, which contain different types of sensitive substrates, such as powders, pellets or films, as well as a clear tendency towards sensor miniaturization and the constant improvement of the fabrication techniques towards greener and more cost-effective synthesis routes over time. The goal of this research was to obtain sensors with high 3S parameters (sensitivity, selectivity, and stability), that can be mass-produced and implemented on a wide scale.
Subject
Physical and Theoretical Chemistry,Analytical Chemistry
Reference170 articles.
1. (2022, December 23). Atmosphere of Earth. Available online: https://en.wikipedia.org/wiki/Atmosphere_of_Earth.
2. (2022, December 23). CO Health Risks. Available online: https://www.detectcarbonmonoxide.com/co-health-risks.
3. Fraden, J. (2010). Handbook of Modern Sensors, Springer.
4. Kappler, J.T. (2001). Characterisation of High-Performance SnO2 Gas Sensors for CO Detection by In Situ Techniques, Shaker.
5. Ripka, P., and Tipek, A. (2013). Modern Sensors Handbook, John Wiley & Sons.
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