Author, as appears in the article.: Behi, Syrine; Casanova-Chafer, Juan; Gonzalez, Ernesto; Bohli, Nadra; Llobet, Eduard; Abdelghani, Adnane
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Casanova Chafer, Juan / GONZÁLEZ GARCÍA, ELENA / Llobet Valero, Eduard
Keywords: Sensor array Nitrogen-dioxide Metal nanoparticle Graphene Gas sensing Carbon nanotubes vapor sensor array no2 nanotubes nanomaterials metal nanoparticle graphene gas sensing carbon nanotubes
Abstract: Many research works report a sensitive detection of a wide variety of gas species. However, their in-lab detection is usually performed by using single gases and, therefore, selectivity often remains an unsolved issue. This paper reports a four-sensor array employing different nano-carbon sensitive layers (bare graphene, SnO2@Graphene, WO3@Graphene, and Au@CNTs). The different gas-sensitive films were characterised via several techniques such as FESEM, TEM, and Raman. First, an extensive study was performed to detect isolated NO2, CO2, and NH3 molecules, unravelling the sensing mechanism at the operating temperatures applied. Besides, the effect of the ambient moisture was also evaluated. Afterwards, a model for target gas identification and concentration prediction was developed. Indeed, the sensor array was used in mixtures of NO2 and CO2 for studying the cross-sensitivity and developing a calibration model. As a result, the NO2 detection with different background levels of CO2 was achieved with an R2 of 0.987 and an RMSE of about 22 ppb.© 2022 IOP Publishing Ltd.
Thematic Areas: Química Physics, applied Odontología Nanoscience and nanotechnology Nanoscience & nanotechnology Medicina veterinaria Medicina ii Medicina i Mechanics of materials Mechanical engineering Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materials science Materiais Matemática / probabilidade e estatística Interdisciplinar General medicine General materials science General chemistry Farmacia Ensino Engineering, multidisciplinary Engineering Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrical and electronic engineering Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Chemistry (miscellaneous) Chemistry (all) Biotecnología Bioengineering Astronomia / física Antropologia / arqueologia
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: juan.casanova@urv.cat eduard.llobet@urv.cat
Author identifier: 0000-0001-6164-4342
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://iopscience.iop.org/article/10.1088/1361-6528/ac4e43/pdf
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Nanotechnology. 33 (19): 195501-
APA: Behi, Syrine; Casanova-Chafer, Juan; Gonzalez, Ernesto; Bohli, Nadra; Llobet, Eduard; Abdelghani, Adnane (2022). Metal loaded nano-carbon gas sensor array for pollutant detection. Nanotechnology, 33(19), 195501-. DOI: 10.1088/1361-6528/ac4e43
Article's DOI: 10.1088/1361-6528/ac4e43
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV