Thermometric Gas Sensing

Bársony, I.; Dücső, Csaba; Fürjes, Péter

doi:10.1007/978-0-387-09665-0_7

Cited by 11 publications

(10 citation statements)

References 17 publications

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“…In this case, the interaction of a target analyte with a chemical sensor can generate or consume heat that is then measured by sensitive thermistor (i.e., semiconductors with strongly temperaturedependent conductivity). 70,71 Thermometric sensors most commonly utilize enzymatic reactions with high enthalpy changes. 28,[72][73][74] Due to the simplicity of the thermal biosensing approach (e.g., there is no need for labeling reactants), this method can be considered as a suitable replacement for other signal transduction methods that require a sophisticated cascades of reaction steps.…”

Section: Thermometric Sensorsmentioning

confidence: 99%

Optical sensor arrays for chemical sensing: the optoelectronic nose

2013

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A comprehensive review is presented on the development and state of the art of colorimetric and fluorometric sensor arrays. Optical arrays based on chemoresponsive colorants (dyes and nanoporous pigments) probe the chemical reactivity of analytes, rather than their physical properties. This provides a high dimensionality to chemical sensing that permits high sensitivity (often down to ppb levels), impressive discrimination among very similar analytes and exquisite fingerprinting of extremely similar mixtures over a wide range of analyte types, both in the gas and liquid phases.

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Section: Thermometric Sensorsmentioning

confidence: 99%

Optical sensor arrays for chemical sensing: the optoelectronic nose

2013

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“…To monitor the presence of dust, gravimetric sensors are used, which contain crystals made of piezoelectric material that change the frequency of natural vibrations with the change of mass [47]. The thermometric sensors use the heat of reaction emitted or absorbed as a result of the reaction of the substance being analyzed with the active layer of the sensor [48]. Magnetic sensors operate with the use of the phenomenon of the magnetic field on the paramagnetic quantities of the measured gases [49].…”

Section: Scatteringmentioning

confidence: 99%

Monitoring of Selected CBRN Threats in the Air in Industrial Areas with the Use of Unmanned Aerial Vehicles

et al. 2020

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Unmanned aerial vehicles (UAVs) play an increasingly important role in various areas of life, including in terms of protection and security. As a result of fires, volcanic eruptions, or other emergencies, huge amounts of toxic gases, dust, and other substances are emitted into the environment, which, together with high temperature, often leads to serious environmental contamination. Based on the available literature and patent databases, an analysis of the available UAVs models was carried out in terms of their applicability in air contaminated conditions in industrial areas, in the event of emergencies, such as fire, chemical contamination. The possibilities of using the devices were analyzed in terms of weather conditions, construction, and used materials in CBRN (chemical, biological, radiological, nuclear) threat situations. It was found that, thanks to the use of appropriate sensors, cameras, and software of UAVs integrated with a given system, it is possible to obtain information on air quality at a given moment, which is very important for the safety of people and the environment. However, several elements, including the possibility of use in acidification conditions, requires refinement to changing crisis conditions.

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“…The decomposition reaction of H

is a highly exothermic reaction [ 4 , 11 ]. While the auto-thermal decomposition of H

(described in literature as homogeneous decomposition) dominantly occurs at temperatures above 400

C [ 24 , 25 ], catalysts can be used to lower the activation energy of the decomposition process [ 26 ]. Hence, H

decomposition reaction can occur at any temperature (described in literature as heterogeneous decomposition) and about 105 kJ/mol is released [ 25 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…By monitoring the temperature difference between the active and passive sensing element, quantification of the released thermal energy on the catalytic surface is possible. The fraction of H

in the gas atmosphere can hence be derived and the concentration logged [ 26 , 32 ]. As a result, calorimetric H

sensors based on MnO

present a method for the detection, quantification and monitoring of the H

-rich environment required in aseptic filling machines.…”

Section: Introductionmentioning

confidence: 99%

Thermocatalytic Behavior of Manganese (IV) Oxide as Nanoporous Material on the Dissociation of a Gas Mixture Containing Hydrogen Peroxide

et al. 2018

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In this article, we present an overview on the thermocatalytic reaction of hydrogen peroxide (H2O2) gas on a manganese (IV) oxide (MnO2) catalytic structure. The principle of operation and manufacturing techniques are introduced for a calorimetric H2O2 gas sensor based on porous MnO2. Results from surface analyses by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) of the catalytic material provide indication of the H2O2 dissociation reaction schemes. The correlation between theory and the experiments is documented in numerical models of the catalytic reaction. The aim of the numerical models is to provide further information on the reaction kinetics and performance enhancement of the porous MnO2 catalyst.

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Thermometric Gas Sensing

Cited by 11 publications

References 17 publications

Optical sensor arrays for chemical sensing: the optoelectronic nose

Optical sensor arrays for chemical sensing: the optoelectronic nose

Monitoring of Selected CBRN Threats in the Air in Industrial Areas with the Use of Unmanned Aerial Vehicles

Thermocatalytic Behavior of Manganese (IV) Oxide as Nanoporous Material on the Dissociation of a Gas Mixture Containing Hydrogen Peroxide

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