Preprint Article Version 1 This version is not peer-reviewed

The Effect of Doping rGO with MnO2 Nanomaterial on Its Gas Sensing Properties

Mohamed Ayoub Alouani
ORCID logo ,
Juan Casanova-Chafer
,
Santiago de Bernardi-Martín
ORCID logo ,
Alejandra García-Gómez
,
Foad Salehnia
ORCID logo ,
José Carlos Santos-Ceballos
ORCID logo ,
Alejandro Santos-Betancourt
ORCID logo ,
Xavier Vilanova
* ORCID logo ,
Eduard Llobet
* ORCID logo
Version 1 : Received: 21 October 2024 / Approved: 21 October 2024 / Online: 22 October 2024 (02:49:11 CEST)

How to cite: Alouani, M. A.; Casanova-Chafer, J.; de Bernardi-Martín, S.; García-Gómez, A.; Salehnia, F.; Santos-Ceballos, J. C.; Santos-Betancourt, A.; Vilanova, X.; Llobet, E. The Effect of Doping rGO with MnO2 Nanomaterial on Its Gas Sensing Properties. Preprints 2024, 2024101611. https://doi.org/10.20944/preprints202410.1611.v1 Alouani, M. A.; Casanova-Chafer, J.; de Bernardi-Martín, S.; García-Gómez, A.; Salehnia, F.; Santos-Ceballos, J. C.; Santos-Betancourt, A.; Vilanova, X.; Llobet, E. The Effect of Doping rGO with MnO2 Nanomaterial on Its Gas Sensing Properties. Preprints 2024, 2024101611. https://doi.org/10.20944/preprints202410.1611.v1

Abstract

Manganese dioxide (MnO2) has drawn attention as a sensitizer to be incorporated in graphene-based chemoresistive sensors thanks to its promising properties. In this regard, a rGO@MnO2 sensing material was prepared and deposited on two different substrates (Silicon and Kapton). These sensors were exposed to different dilutions of NO2 under dry and humid conditions at room temperature. Other gases or vapours such as NH3, CO, ethanol and H2 were also tested. FESEM, HRTEM, RAMAN and XRD were used to characterize the prepared sensors. The experimental results showed that the incorporation of MnO2 in the rGO material enhanced its response towards NO2. Moreover, this material showed also very good responses toward NH3 both under dry and humid conditions and showed no cross-responsiveness towards other toxic gases.

Keywords

reduced graphene oxide; manganese dioxide (MnO2); gas sensor; NO2 detection; NH3 detection

Subject

Chemistry and Materials Science, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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