Autor según el artículo: Colomer, J.F. Bittencourt, C. Llobet, E. Snyders, R. Reckinger, N. González-León, O. Scardamaglia, M. Mudimela, P.R.

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

Resumen: Vertically aligned carbon nanotubes of different lengths (150, 300, 500 µm) synthesized by thermal chemical vapor deposition and decorated with gold nanoparticles were investigated as gas sensitive materials for detecting nitrogen dioxide (NO2) at room temperature. Gold nanoparticles of about 6 nm in diameter were sputtered on the top surface of the carbon nanotube forests to enhance the sensitivity to the pollutant gas. We showed that the sensing response to nitrogen dioxide depends on the nanotube length. The optimum was found to be 300 µm for getting the higher response. When the background humidity level was changed from dry to 50% relative humidity, an increase in the response to NO2 was observed for all the sensors, regardless of the nanotube length.

Áreas temáticas: Gas detectors

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 2190-4286

Página final: 918

Volumen de revista: 5

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.beilstein-journals.org/bjnano/articles/5/104

DOI del artículo: 10.3762/bjnano.5.104

Entidad: Universitat Rovira i Virgili.

Año de publicación de la revista: 2014

Página inicial: 910