title: Ozone sensing based on palladium decorated carbon nanotubes.
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.
authors.affiliation: Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, 07730 D.F., Mexico. selenecapula@gmail.com.
authors.forename: Selene Capula
authors.initials: SC
authors.lastname: Colindres
authors.affiliation: Aix-Marseille Université, CNRS, UMR 7334, Av. E.N. Niémen 13397, Marseille, France. khalifa.aguir@im2np.fr.
authors.forename: Khalifa
authors.initials: K
authors.lastname: Aguir
authors.affiliation: Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de Reforma 880, Lomas de Santa Fe, 011219 D.F., Mexico. felipe.cervantes@ibero.mx.
authors.forename: Felipe
authors.initials: F
authors.lastname: Cervantes Sodi
authors.affiliation: Instituto Politécnico Nacional, Centro de Investigación en Computación, Av. Juan de Dios Batiz s/n Col. Nueva Industrial Vallejo 07738 D.F., Mexico. lvilla@cic.ipn.mx.
authors.forename: Luis Villa
authors.initials: LV
authors.lastname: Vargas
authors.affiliation: Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de Reforma 880, Lomas de Santa Fe, 011219 D.F., Mexico. armandomoncayo@gmail.com.
authors.forename: José Moncayo
authors.initials: JM
authors.lastname: Salazar
authors.affiliation: Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, 07730 D.F., Mexico. vgaribay@imp.mx.
authors.forename: Vicente Garibay
authors.initials: VG
authors.lastname: Febles
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D017097:Electric Impedance; D004566:Electrodes; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D010126:Ozone / Q000032:analysis*; D010165:Palladium / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D037742:Nanotubes, Carbon; D010165:Palladium; D010126:Ozone
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