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Ozone Sensing Based on Palladium Decorated Carbon Nanotubes

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 plati...

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Detalles Bibliográficos
Autores principales: Colindres, Selene Capula, Aguir, Khalifa, Sodi, Felipe Cervantes, Vargas, Luis Villa, Moncayo Salazar, José A., Febles, Vicente Garibay
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4029722/
https://www.ncbi.nlm.nih.gov/pubmed/24736133
http://dx.doi.org/10.3390/s140406806
Descripción
Sumario: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 SiO(2) substrate. The sensor exhibited a resistance change to ozone (O(3)) 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 O(3) at 120 °C. The device shows a very reproducible sensor performance, with high repeatability, full recovery and efficient response.