Multi-walled carbon nanotube based sensors for selective detection of chemical pollutants
| Autor: | Lopes, I., Gohier, A., Porterat, D., Chenevier, P., Deniau, G., Palacin, Serge, Mayne-L'Hermite, M., Reynaud, C. |
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| Přispěvatelé: | Laboratoire Francis PERRIN (LFP - URA 2453), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Service de Physique et de Chimie des Surfaces et Interfaces (SPCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | MATERIALS AND APPLICATIONS FOR SENSORS AND TRANSDUCERS MATERIALS AND APPLICATIONS FOR SENSORS AND TRANSDUCERS, 2012, 495, pp.298-301. ⟨10.4028/www.scientific.net/KEM.495.298⟩ |
| DOI: | 10.4028/www.scientific.net/KEM.495.298⟩ |
| Popis: | International audience; This work reports the design of a resistive gas sensor based on 2D mats of multi-walled carbon nanotubes (MWCNT). The sensor sensitivity was optimised using chlorine by tuning both MWCNT network morphology and MWCNT electronic properties. Raw CNT were compared with annealed CNT. Besides, with the aim to enhance the sensor sensitivity and selectivity for detection of several gases, MWCNT were functionalized with poly(phenylene)-like or vinyl polymers using a process based on the diazonium chemistry. In this paper, we will mention the preparation of such sensors and we will demonstrate that the optimized devices are operating at room temperature, for the detection of pollutants such as chlorine, hydrogen chloride and ammonia. Such sensors are able to detect down to 30 ppb of pollutant, in particular for chlorine. |
| Databáze: | OpenAIRE |
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