A novel approach for Zeolite-based Materials for Gas Sensors

Mohan, Krishna

doi:10.9790/2402-0640105

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…e use of zeolites in the field of sensors is often employed to improve sensitivity and selectivity, using preferably the adsorption process. e pore size, ion conductivity, adsorption, and catalytic selectivity can be modified by ion exchanges with different cations [11].…”

Section: Measurement Of Wine Volatile Compounds Of the Sensors Modifimentioning

confidence: 99%

Gas Sensors Modified with Zeolite Y for Assessing Wine Aroma Compounds

Paredes-Doig

Cárcamo

Cotillo

et al. 2019

Journal of Chemistry

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The present work develops a MOS-based e-nose with sensors modified with zeolite Y. For this purpose, the following SnO2 doped with Pd and/or Pt have been prepared: M1 ((0.25 Pd/0.75 Pt)/SnO2), M2 ((0.50 Pd/0.50 Pt)/SnO2), M3 ((0.75 Pd/0.25 Pt)/SnO2), Pd/SnO2, and Pt/SnO2, at the total concentrations of the noble metals of 0.1% and 0.2% for use in gas sensors and be part of the electronic nose. Then, the sensors were assembled with the oxides using the screen printing method. Different electronic noses of four sensors were prepared by combining tin oxides doped with palladium and/or platinum and zeolite Y. The physicochemical characterization of oxides using FRX, FTIR, sorption of N2, and RAMAN has been performed. Measurements for the detection of wine volatile compounds such as ethanol, methanol, 1-phenyl ethanol, propionic acid, and acetic acid were carried out with these sensors located in a gas chamber and using a program that includes the Labview software, which serves to automate the sensing process. It was found that the sensors modified with zeolite were the ones that in general had higher detections of volatile compounds and PCAs showed positive correlations only for ethanol and the mixture of ethanol at 12% and methanol at 3%. This is related to better detection of these sensors.

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Section: Measurement Of Wine Volatile Compounds Of the Sensors Modifimentioning

confidence: 99%

Gas Sensors Modified with Zeolite Y for Assessing Wine Aroma Compounds

Paredes-Doig

Cárcamo

Cotillo

et al. 2019

Journal of Chemistry

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“…Sensors with high operating temperature are generally employed in industrial and space applications. Over the last decades, research on toxic gas sensing was mostly focused on using electrochemical sensors which were built from various functional materials, such as carbon nanomaterials [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ], metal oxide/metallic nanostructures [ 32 , 33 , 34 , 35 , 36 , 37 , 38 ], transition metal dichalcogenides (TMDs) [ 39 , 40 , 41 ], gallium nitride (GaN) [ 42 , 43 , 44 , 45 ], organic materials [ 46 , 47 , 48 , 49 , 50 ], solid electrolytes [ 51 , 52 , 53 , 54 ], zeolites [ 55 , 56 , 57 , 58 ] and others [ 59 , 60 , 61 , 62 , 63 ]. Recently numerous research efforts have been made on suitable gas sensing materials to detect nitrogen oxides, sulfur oxides and hydrogen sulfide gases.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Electrochemical Sensors for Detecting Toxic Gases: NO2, SO2 and H2S

Khan

Rao

2019

Sensors

268

100

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Toxic gases, such as NOx, SOx, H2S and other S-containing gases, cause numerous harmful effects on human health even at very low gas concentrations. Reliable detection of various gases in low concentration is mandatory in the fields such as industrial plants, environmental monitoring, air quality assurance, automotive technologies and so on. In this paper, the recent advances in electrochemical sensors for toxic gas detections were reviewed and summarized with a focus on NO2, SO2 and H2S gas sensors. The recent progress of the detection of each of these toxic gases was categorized by the highly explored sensing materials over the past few decades. The important sensing performance parameters like sensitivity/response, response and recovery times at certain gas concentration and operating temperature for different sensor materials and structures have been summarized and tabulated to provide a thorough performance comparison. A novel metric, sensitivity per ppm/response time ratio has been calculated for each sensor in order to compare the overall sensing performance on the same reference. It is found that hybrid materials-based sensors exhibit the highest average ratio for NO2 gas sensing, whereas GaN and metal-oxide based sensors possess the highest ratio for SO2 and H2S gas sensing, respectively. Recently, significant research efforts have been made exploring new sensor materials, such as graphene and its derivatives, transition metal dichalcogenides (TMDs), GaN, metal-metal oxide nanostructures, solid electrolytes and organic materials to detect the above-mentioned toxic gases. In addition, the contemporary progress in SO2 gas sensors based on zeolite and paper and H2S gas sensors based on colorimetric and metal-organic framework (MOF) structures have also been reviewed. Finally, this work reviewed the recent first principle studies on the interaction between gas molecules and novel promising materials like arsenene, borophene, blue phosphorene, GeSe monolayer and germanene. The goal is to understand the surface interaction mechanism.

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Discriminative sensing performances of ZSM-5, Y, mordenite, ferrierite, beta, 3A, 4A, 5A, and 13X zeolites towards sulfur dioxide

Choeichom

Sirivat

2018

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A novel approach for Zeolite-based Materials for Gas Sensors

Cited by 4 publications

References 24 publications

Gas Sensors Modified with Zeolite Y for Assessing Wine Aroma Compounds

Gas Sensors Modified with Zeolite Y for Assessing Wine Aroma Compounds

Recent Advances in Electrochemical Sensors for Detecting Toxic Gases: NO2, SO2 and H2S

Discriminative sensing performances of ZSM-5, Y, mordenite, ferrierite, beta, 3A, 4A, 5A, and 13X zeolites towards sulfur dioxide

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