Author, as appears in the article.: Casanova-Chafer, Juan; Garcia-Aboal, Rocio; Llobet, Eduard; Atienzar, Pedro
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Casanova Chafer, Juan / Llobet Valero, Eduard
Keywords: Titanium Perovskite Oxygen plasma Oxygen Oxides Nanocomposites Graphite Graphene Gas sensors Co2 Co 2 Chemical gas sensor Carbon dioxide Calcium compounds water temperature raman-spectroscopy oxygen plasma graphene defects co2 chemical gas sensor
Abstract: Carbon dioxide (CO2) is a major greenhouse gas responsible for global warming and climate change. The development of sensitive CO2 sensors is crucial for environmental and industrial applications. This paper presents a novel CO2 sensor based on perovskite nanocrystals immobilized on graphene and functionalized with oxygen plasma treatment. The impact of this post-treatment method was thoroughly investigated using various characterization techniques, including Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The detection of CO2 at parts per million (ppm) levels demonstrated that the hybrids subjected to 5 min of oxygen plasma treatment exhibited a 3-fold improvement in sensing performance compared to untreated layers. Consequently, the CO2 sensing capability of the oxygen-treated samples showed a limit of detection and limit of quantification of 6.9 and 22.9 ppm, respectively. Furthermore, the influence of ambient moisture on the CO2 sensing performance was also evaluated, revealing a significant effect of oxygen plasma treatment.
Thematic Areas: Process chemistry and technology Nanoscience & nanotechnology Instrumentation Fluid flow and transfer processes Engenharias iii Chemistry, multidisciplinary Chemistry, analytical Bioengineering
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/submittedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Acs Sensors. 9 (2): 830-839
APA: Casanova-Chafer, Juan; Garcia-Aboal, Rocio; Llobet, Eduard; Atienzar, Pedro (2024). Enhanced CO2 Sensing by Oxygen Plasma-Treated Perovskite-Graphene Nanocomposites. Acs Sensors, 9(2), 830-839. DOI: 10.1021/acssensors.3c02166
Entity: Universitat Rovira i Virgili
Journal publication year: 2024
Publication Type: Journal Publications
Repositori URV