Ozone Sensing Based on Palladium Decorated Carbon Nanotubes

Sensors

Selene Capula Colindres²  Khalifa Aguir¹  Felipe Cervantes Sodi³  Luis Villa Vargas⁴  José A. Moncayo Salazar³ 

[1] Aix-Marseille Université, CNRS, UMR 7334, Av. E.N. Niémen 13397, Marseille, France; E-Mail:;Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, 07730 D.F., Mexico; E-Mail:;Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de Reforma 880, Lomas de Santa Fe, 011219 D.F., Mexico; E-Mails:;Instituto Politécnico Nacional, Centro de Investigación en Computación, Av. Juan de Dios Batiz s/n Col. Nueva Industrial Vallejo 07738 D.F., Mexico; E-Mail:

关键词: gas sensor;    ozone;    multiwall carbon nanotubes;    Pd nanoparticles;   

DOI  :  10.3390/s140406806

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.