Synthesis of graphene oxide-cobalt oxide hybrid materials for gas sensors application

Yusof, Nabilah Mohammad and Ibrahim, Suriani and Rozali, Shaifulazuar (2022) Synthesis of graphene oxide-cobalt oxide hybrid materials for gas sensors application. Materials Today-Proceedings, 66 (5, SI). pp. 2680-2684. ISSN 2214-7853, DOI

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The development of acetone gas sensors has been tremendous within these past few years due to their ability to prevent casualty events such as damage to vision and central nervous system after exposure to high concentration of acetone gas. Highly sensitive acetone gas sensors are used for air quality control, projection of environmental patterns, health monitoring programs, and many more. In this study, hybrid materials containing graphene oxide and cobalt oxide were synthesized via hydrothermal method for gas sensors. Graphene holds the potential of replacing silicon due to its unique distinguishable features especially in lowering bandgaps for metal oxides. Graphene oxide (GO) was synthesized using improved Hummers' method. Then, graphene oxide-cobalt oxide (GO-Co3O4) was prepared using the hydrothermal method which results in the formation of porous structure materials that might hold the key to lowering the operating temperature of pristine GO and Co3O4 for low concentration gas sensing purposes. This leads to a highly responsive gas sensing system which is said to be beneficial, especially in developing affordable and sophisticated non-invasive early detection of diabetes systems in the medical field. This nanostructure is expected to detect acetone concentrations up to 20 ppm at a temperature close to the room environment. Copyright (c) 2022 Elsevier Ltd. All rights reserved.

Item Type: Article
Funders: Research University Grant [ST063-2021], Science and Technology Development Fund (STDF) Ministry of Higher Education & Scientific Research (MHESR) [IIRG018D-2019], materials characterization laboratory (CAREF) , Faculty of Engineering, University of Malaya
Additional Information: 14th AUN/SEED-Net Regional Conference on Materials (RCM) / 4th International Postgraduate Conference on Materials, Minerals and Polymer (MAMIP), ELECTR NETWORK, DEC 01-02, 2021
Uncontrolled Keywords: Graphene oxide; Cobalt oxide; Gas sensor; Acetone
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 30 Aug 2023 03:04
Last Modified: 30 Aug 2023 03:04

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