Next Article in Journal
Determination of Optimal Predictors and Sampling Frequency to Develop Nutrient Soft Sensors Using Random Forest
Previous Article in Journal
A Human Digital-Twin-Based Framework Driving Human Centricity towards Industry 5.0
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Sensors
Volume 23
Issue 13
10.3390/s23136055
sensors-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

ZnO-Loaded Graphene for NO2 Gas Sensing

by
Mohamed Ayoub Alouani
1,
Juan Casanova-Cháfer
1,
Frank Güell
1,2,
Elisa Peña-Martín
3,
Sara Ruiz-Martínez-Alcocer
3,
Santiago de Bernardi-Martín
3,
Alejandra García-Gómez
3,
Xavier Vilanova
1,* and
Eduard Llobet
1
1
Microsystems Nanotechnologies for Chemical Analysis (MINOS), Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain
2
ENFOCAT-IN2UB, Universitat de Barcelona, C/Martí i Franquès 1, 08028 Barcelona, Spain
3
Gnanomat S.L. C/Faraday, 7. Parque Científico de Madrid, 28049 Madrid, Spain
*
Author to whom correspondence should be addressed.
Sensors 2023, 23(13), 6055; https://doi.org/10.3390/s23136055
Submission received: 6 March 2023 / Revised: 26 April 2023 / Accepted: 27 June 2023 / Published: 30 June 2023
(This article belongs to the Section Chemical Sensors)
Browse Figures
Review Reports Versions Notes

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.
Keywords: graphene; zinc oxide; gas sensor; NO2 detection graphene; zinc oxide; gas sensor; NO2 detection

Share and Cite

MDPI and ACS Style

Alouani, M.A.; Casanova-Cháfer, J.; Güell, F.; Peña-Martín, E.; Ruiz-Martínez-Alcocer, S.; de Bernardi-Martín, S.; García-Gómez, A.; Vilanova, X.; Llobet, E. ZnO-Loaded Graphene for NO2 Gas Sensing. Sensors 2023, 23, 6055. https://doi.org/10.3390/s23136055

AMA Style

Alouani MA, Casanova-Cháfer J, Güell F, Peña-Martín E, Ruiz-Martínez-Alcocer S, de Bernardi-Martín S, García-Gómez A, Vilanova X, Llobet E. ZnO-Loaded Graphene for NO2 Gas Sensing. Sensors. 2023; 23(13):6055. https://doi.org/10.3390/s23136055

Chicago/Turabian Style

Alouani, Mohamed Ayoub, Juan Casanova-Cháfer, Frank Güell, Elisa Peña-Martín, Sara Ruiz-Martínez-Alcocer, Santiago de Bernardi-Martín, Alejandra García-Gómez, Xavier Vilanova, and Eduard Llobet. 2023. "ZnO-Loaded Graphene for NO2 Gas Sensing" Sensors 23, no. 13: 6055. https://doi.org/10.3390/s23136055

APA Style

Alouani, M. A., Casanova-Cháfer, J., Güell, F., Peña-Martín, E., Ruiz-Martínez-Alcocer, S., de Bernardi-Martín, S., García-Gómez, A., Vilanova, X., & Llobet, E. (2023). ZnO-Loaded Graphene for NO2 Gas Sensing. Sensors, 23(13), 6055. https://doi.org/10.3390/s23136055

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop