Selective gas detection of H<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.svg"><mml:msub><mml:mrow/><mml:mn>2</mml:mn></mml:msub></mml:math> and CO by a single MOX-sensor

Shaposhnik, A. V.; Moskalev, Pavel V.; Chegereva, Kristina L.; Zviagin, Alexey A.; Vasiliev, Alexey

doi:10.1016/j.snb.2020.129376

Cited by 24 publications

(6 citation statements)

References 47 publications

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“…For precise leakage detection, the sensor must be able to sense even minute quantities of the target gases. The smallest concentration of target gas that can be sensed by the sensor in operational conditions is termed its LOD. − All these variables are affected by the nature of the sensitive layer, their particle size, and morphology as well as the type of interactions between the gas and sensor. To regulate these variables, an understanding of the interaction between the target gas and sensitive layer should be explored using new technical advancements, materials, and processes.…”

Section: Chemiresistive Gas Response Characteristicsmentioning

confidence: 99%

A Review on Chemiresistive Hybrid Zinc Oxide and Nanocomposites for Gas Sensing

Yadav

Kumar

Chaudhary

et al. 2023

Ind. Eng. Chem. Res.

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Chemiresistors have been widely employed in monitoring toxic fumes, gases, and environmental pollutants. Among a plethora of metal oxide semiconductors (MOX) used for preparing chemiresistors, zinc oxide is the topmost candidate. ZnO-based gas sensors are cost-effective, nontoxic, stable, and easily prepared by wet chemical facile approaches. ZnO nanostructures are the most promising candidates for leakage detection of toxic gases with reliable performance. In this regard, several investigations have been carried out to increase sensor response at room temperature (RT). Current advances in ZnO nanostructures-based thin films are the subject of this review paper. The review begins with a basic survey of ZnO thin films for gas sensors focusing on how the structure and properties of ZnO affect the gas response mechanisms, various factors and processing methods of ZnO nanostructures, and possible ways to enhance the gas response characteristics of ZnO-based sensors.

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Section: Chemiresistive Gas Response Characteristicsmentioning

confidence: 99%

A Review on Chemiresistive Hybrid Zinc Oxide and Nanocomposites for Gas Sensing

Yadav

Kumar

Chaudhary

et al. 2023

Ind. Eng. Chem. Res.

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“…In most works devoted to non-stationary temperature regimes, the temperature of MOX sensors was modulated by harmonic oscillations with a constant period [ 5 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ] or close to it [ 18 ]. In other works, researchers used a pseudo-random oscillation generator to modulate the temperature [ 19 , 20 , 21 ], and in some works, researchers used sharp, “pulse” modes of sensor heating [ 6 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…Qualitative and quantitative analyses of the gaseous medium in this case requires mathematical processing of multidimensional data arrays, which is usually carried out on the basis of various methods of dimensionality reduction. Initially, researchers used for this purpose Fourier transforms [ 4 , 5 , 7 , 8 , 9 , 10 , 15 ] or wavelet transforms [ 11 , 13 , 14 , 15 ], but recently they have begun to use various projection methods [ 26 , 27 , 28 ] and artificial neural networks [ 18 ]. The mechanism of chemisorption and chemical interactions on the surface of metal oxide sensors was considered in publications [ 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Chemisorption on the Surface of Nanodispersed SnO2–PdOx and Selective Determination of CO and H2 in Air

Vasiliev

Shaposhnik

Moskalev

et al. 2023

Sensors

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In this work, the kinetics and mechanisms of the interaction of carbon monoxide and hydrogen with the surface of a nanosized SnO2–PdOx metal oxide material in air is studied. Non-stationary temperature regimes make it possible to better identify the individual characteristics of target gases and increase the selectivity of the analysis. Recently, chemometric methods (PCA, PLS, ANN, etc.) are often used to interpret multidimensional data obtained in non-stationary temperature regimes, but the analytical solution of kinetic equations can be no less effective. In this regard, we studied the kinetics of the interaction of carbon monoxide and hydrogen with atmospheric oxygen on the surface of SnO2–PdOx using semiconductor metal oxide sensors under conditions as close as possible to classical gas analysis. An analysis of the influence of catalytic surface temperature on the mechanisms of chemisorption processes allowed us to correctly interpret and mathematically describe the electrophysical characteristics of the sensor in the selective determination of carbon monoxide and hydrogen under nonstationary temperature conditions. The reaction mechanism is applied as well to the analysis of the operation scheme of the CO sensor TGS 2442 of Figaro Inc.

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“…In recent years, people have paid more attention to the effect of humidity on the design of gas sensors, [24][25][26][27][28][29][30][31][32][33] and they put forward many measures to abate the humidity influence on the sensor. [34][35][36][37][38][39][40][41][42] that the recovery time after the response is greatly shortened, and the selectivity is improved.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, people have paid more attention to the effect of humidity on the design of gas sensors, [ 24–33 ] and they put forward many measures to abate the humidity influence on the sensor. [ 34–42 ] Perfecto et al.…”

Section: Introductionmentioning

confidence: 99%

Research progress on moisture resistance of gas sensors

Sun,

Shi,

Wang

et al. 2023

CLEAN Soil Air Water

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Sensors used to detect explosive, flammable, toxic, and harmful gases are in focus of research. The gas sensor can be affected by many factors in the process of use, and among the many adverse elements affecting the function of the gas sensor, humidity is the most common. With the rapid development of gas sensors, the influence of humidity on gas sensors has been paid more and more attention. To reduce the impact of humidity, many methods have been proposed. In this review, the specific impact of humidity on the function of metal‐oxide semiconductors and solid electrolyte gas sensors is summarized. Practical techniques are proposed to reduce the effect of humidity on device performance, which is of great help in improving the detection efficiency and quality of gas sensors in high‐humidity environment. The information may be valuable for expanding the application field of gas sensors.

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Selective gas detection of H2 and CO by a single MOX-sensor

Cited by 24 publications

References 47 publications

A Review on Chemiresistive Hybrid Zinc Oxide and Nanocomposites for Gas Sensing

A Review on Chemiresistive Hybrid Zinc Oxide and Nanocomposites for Gas Sensing

Kinetics of Chemisorption on the Surface of Nanodispersed SnO2–PdOx and Selective Determination of CO and H2 in Air

Research progress on moisture resistance of gas sensors

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