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| Ultima descărcare din IBN: 2023-06-12 11:27 |
 SM ISO690:2012IONETE, Eusebiu Ilarian, SPIRIDON, Stefan Ionut, MONEA, Bogdan Florian, STRATULAT, Elena. A Room Temperature Gas Sensor Based on Sulfonated SWCNTs for the Detection of NO and NO₂. In: Sensors (Basel, Switzerland), 2019, nr. 5(19), p. 0. ISSN 1424-8220. DOI: https://doi.org/10.3390/s19051116 |
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  Sensors (Basel, Switzerland) |
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| Numărul 5(19) / 2019 / ISSN 1424-8220 | ||||||
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| DOI:https://doi.org/10.3390/s19051116 | ||||||
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The electrical response of sulfonated single-walled carbon nanotubes (SWCNTs) to NO and NO₂, for gas sensing applications, at room temperature, is reported in this work. A specific configuration based on SWCNT deposition between double pair configuration gold electrodes, supported on a substrate, was considered for the sensing device; employed characterization technique where FTIR and SEM. The experimental results showed a p-type response of the sulfonated SWCNTs, with decrease in resistance, under exposure to NO gas (40⁻200 ppb) and NO₂ (40⁻200 ppb). Also, the sensor responses to successive exposures at NO₂ 800 ppb together with investigation of long term stability, at 485 ppb for NO, are reported. The reaction mechanism in case of NO and NO₂ detection with sulfonated SWCNTs is presented. |
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| Cuvinte-cheie functional groups, sensing mechanisms, sensors properties, sulfonated CNTs |
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