Multi-Walled Carbon Nanotube Based Sensors for Selective Detection of Chemical Pollutants
| Autor: | Pascale Chenevier, Martine Mayne-L'hermite, I. Lopes, G. Deniau, Dominique Porterat, Serge Palacin, Cécile Reynaud, Aurélien Gohier |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
chemistry.chemical_element Nanotechnology 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences Nanomaterials law.invention chemistry.chemical_compound law Phenylene Chlorine General Materials Science Hydrogen chloride Resistive touchscreen Mechanical Engineering 021001 nanoscience & nanotechnology Vinyl polymer 3. Good health 0104 chemical sciences chemistry 13. Climate action Mechanics of Materials Surface modification 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 495:298-301 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.495.298 |
| Popis: | 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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