Author, as appears in the article.: Alouani, Mohamed Ayoub; Casanova-Chafer, Juan; Guell, Frank; Pena-Martin, Elisa; Ruiz-Martinez-Alcocer, Sara; de Bernardi-Martin, Santiago; Garcia-Gomez, Alejandra; Vilanova, Xavier; Llobet, Eduard
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Alouani, Mohamed Ayoub / Casanova Chafer, Juan / GüELL VILÀ, FRANK / Llobet Valero, Eduard / Vilanova Salas, Javier
Keywords: Zinc oxide Sensitive detection No2 detection Nitrogen dioxide Nanoparticles Graphite Graphene Gas sensor zinc oxide sensor no2 detection gas sensor
Abstract: This paper investigates the effect of decorating graphene with zinc oxide (ZnO) nanoparticles (NPs) for the detection of NO2. In this regard, two graphene sensors with different ZnO loadings of 5 wt.% and 20 wt.% were prepared, and their responses towards NO2 at room temperature and different conditions were compared. The experimental results demonstrate that the graphene loaded with 5 wt.% ZnO NPs (G95/5) shows better performance at detecting low concentrations of the target gas than the one loaded with 20 wt.% ZnO NPs (G80/20). Moreover, measurements under dry and humid conditions of the G95/5 sensor revealed that the material is very sensitive to ambient moisture, showing an almost eight-fold increase in NO2 sensitivity when the background changes from dry to 70% relative humidity. Regarding sensor selectivity, it presents a significant selectivity towards NO2 compared to other gas compounds.
Thematic Areas: Zootecnia / recursos pesqueiros Química Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Linguística e literatura Letras / linguística Interdisciplinar Instruments & instrumentation Instrumentation Information systems Geografía Geociências Farmacia Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrochemistry Electrical and electronic engineering Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Biochemistry Atomic and molecular physics, and optics Astronomia / física Arquitetura, urbanismo e design Analytical chemistry
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: mohamedayoub.alouani@urv.cat juan.casanova@urv.cat eduard.llobet@urv.cat xavier.vilanova@urv.cat
Author identifier: 0000-0001-6164-4342 0000-0002-6245-7933
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Sensors. 23 (13): 6055-
APA: Alouani, Mohamed Ayoub; Casanova-Chafer, Juan; Guell, Frank; Pena-Martin, Elisa; Ruiz-Martinez-Alcocer, Sara; de Bernardi-Martin, Santiago; Garcia-Gom (2023). ZnO-Loaded Graphene for NO2 Gas Sensing. Sensors, 23(13), 6055-. DOI: 10.3390/s23136055
Entity: Universitat Rovira i Virgili
Journal publication year: 2023
Publication Type: Journal Publications
Repositori URV