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1

Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, 07730 D.F., Mexico

2

Aix-Marseille Université, CNRS, UMR 7334, Av. E.N. Niémen 13397, Marseille, France

3

Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de Reforma 880, Lomas de Santa Fe, 011219 D.F., Mexico

4

Instituto Politécnico Nacional, Centro de Investigación en Computación, Av. Juan de Dios Batiz s-n Col. Nueva Industrial Vallejo 07738 D.F., Mexico





*

Author to whom correspondence should be addressed.



Abstract Multiwall carbon nanotubes MWCNTs were easily and efficiently decorated with Pd nanoparticles through a vapor-phase impregnation-decomposition method starting from palladium acetylacetonates. The sensor device consisted on a film of sensitive material MWCNTs-Pd deposited by drop coating on platinum interdigitated electrodes on a SiO2 substrate. The sensor exhibited a resistance change to ozone O3 with a response time of 60 s at different temperatures and the capability of detecting concentrations up to 20 ppb. The sensor shows the best response when exposed to O3 at 120 °C. The device shows a very reproducible sensor performance, with high repeatability, full recovery and efficient response. View Full-Text

Keywords: gas sensor; ozone; multiwall carbon nanotubes; Pd nanoparticles gas sensor; ozone; multiwall carbon nanotubes; Pd nanoparticles





Autor: Selene Capula Colindres 1,* , Khalifa Aguir 2, Felipe Cervantes Sodi 3, Luis Villa Vargas 4, José A. Moncayo Salazar 3 and Vicente Garibay Febles 1

Fuente: http://mdpi.com/



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