Review-recent advancements of ZnO/rGO nanocomposites (NCs) for electrochemical gas sensor applications

Rumjit, Nelson Pynadathu and Thomas, Paul and Lai, Chin Wei and Wong, Yew Hoong (2021) Review-recent advancements of ZnO/rGO nanocomposites (NCs) for electrochemical gas sensor applications. Journal of The Electrochemical Society, 168 (2). ISSN 0013-4651, DOI

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Zinc oxide (ZnO)/rGO (reduced graphene oxide) composites have recently gained much interest in electrochemical gas sensor devices due to their fascinating electrochemical properties such as active surface sites, high surface area to volume ratios and high carrier large mobility. ZnO is a significant gas sensing material due to its excellent response towards oxidizing/reducing gases, easy preparation, and less toxicity. At the same time, graphene oxide and reduced graphene oxide-based sensors exhibited high surface area, and the presence of surface functional groups facilitated gas sensing properties. The synergistic effect of ZnO/rGO improved sensing properties and binding stability with macromolecules, thus making them potential candidates for the design of gas sensor devices. However, the fabrication and utilization of gas sensors operating at the low-temperature condition is still a significant hurdle. This review encompasses the recent advancements of ZnO/rGO nanostructures synthesis, studying nanocomposite interactions in various gas sensing applications. This study also proposes future outlooks on the ZnO-rGO gas sensors high selectivity and sensitivity for gas detection at low working temperature.

Item Type: Article
Funders: Impact-Oriented Interdisciplinary Research Grant (IIRG018-2019), NANOCAT RU Grant 2019, Southeast Asia-Taiwan Universities (SATU) Joint Research Grant (ST012-2019), Southeast Asia-Taiwan Universities (SATU) Joint Research Grant (ST016-2020), Faculty Research Grant (GPF017A-2018)
Uncontrolled Keywords: Zinc oxide (ZnO)/rGO; Electrochemical gas sensor; Nanocomposites; Advancements of ZnO/rGO
Subjects: Q Science > QD Chemistry
T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 01 Apr 2022 07:01
Last Modified: 01 Apr 2022 07:01

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