Autor segons l'article: Baccar H; Thamri A; Clément P; Llobet E; Abdelghani A
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Llobet Valero, Eduard
Paraules clau: Yarn Volatile organic compounds Surface defects Substrates Sputtering Sensor substrates Room temperature Platinum Plasma treatment Plasma applications Pd nano particle Palladium Oxygen plasma treatments Organic compounds Nanoparticles Mutiwalled carbon nanotubes Multiwalled carbon nanotubes (mwcn) Metal nanoparticles Metal decoration Gas sensing properties Gas detectors Gas chromatography Gas and vapour sensing Battery-operated alarms Aromatization Aromatic compounds Amorphous carbon plasma treatment mutiwalled carbon nanotubes metal decoration gas and vapour sensing
Resum: Here we report on the gas sensing properties of multiwalled carbon nanotubes decorated with sputtered Pt or Pd nanoparticles. Sputtering allows for an oxygen plasma treatment that removes amorphous carbon from the surface of the carbon nanotubes and creates oxygenated surface defects in which metal nanoparticles nucleate within a few minutes. The decoration with the 2 nm Pt or the 3 nm Pd nanoparticles is very homogeneous. This procedure is performed at the device level (i.e., for carbon nanotubes deposited onto sensor substrates) for many devices in one batch, which illustrates the scalability for the mass production of affordable nanosensors. The response to selected aromatic and non-aromatic volatile organic compounds, as well as pollutant gases has been studied. Pt- and Pd-decorated multiwalled carbon nanotubes show a fully reversible response to the non-aromatic volatile organic compounds tested when operated at room temperature. In contrast, these nanomaterials were not responsive to the aromatic compounds studied (measured at concentrations up to 50 ppm). Therefore, these sensors could be useful in a small, battery-operated alarm detector, for example, which is able to discriminate aromatic from non-aromatic volatile organic compounds in ambient. © 2015 Baccar et al.
Àrees temàtiques: Química Physics, applied Physics and astronomy (miscellaneous) Physics and astronomy (all) Nanoscience and nanotechnology Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Interdisciplinar General physics and astronomy General materials science Engenharias iv Engenharias iii Electrical and electronic engineering Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: eduard.llobet@urv.cat
Identificador de l'autor: 0000-0001-6164-4342
Data d'alta del registre: 2023-02-19
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.beilstein-journals.org/bjnano/articles/6/95
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Beilstein Journal Of Nanotechnology. 6 (1): 919-927
Referència de l'ítem segons les normes APA: Baccar H; Thamri A; Clément P; Llobet E; Abdelghani A (2015). Pt- and Pd-decorated MWCNTs for vapour and gas detection at room temperature. Beilstein Journal Of Nanotechnology, 6(1), 919-927. DOI: 10.3762/bjnano.6.95
DOI de l'article: 10.3762/bjnano.6.95
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2015
Tipus de publicació: Journal Publications
Repositori URV