Journal article
Dual Selective Gas Sensing Characteristics of 2D alpha-MoO3-x via a Facile Transfer Process
Fahmida Rahman, Ali Zavabeti, Md Ataur Rahman, Aram Arash, Aishani Mazumder, Sumeet Walia, Sharath Sriram, Madhu Bhaskaran, Sivacarendran Balendhran
ACS Applied Materials and Interfaces | American Chemical Society | Published : 2019
Abstract
Metal oxide-based gas sensor technology is promising due to their practical applications in toxic and hazardous gas detection. Orthorhombic α-MoO3 is a planar metal oxide with a unique layered structure, which can be obtained in a two-dimensional (2D) form. In the 2D form, the larger surface area-to-volume ratio of the material facilitates significantly higher interaction with gas molecules while exhibiting exceptional transport properties. The presence of oxygen vacancies results in nonstoichiometric MoO3 (MoO3-x), which further enhances the charge carrier mobility. Here, we study dual gas sensing characteristics and mechanism of 2D α-MoO3-x. Herein, conductometric dual gas sensors based on..
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Grants
Awarded by Australian Research Council (ARC)
Funding Acknowledgements
The authors acknowledge support from the Australian Research Council (ARC) with project and personnel support through DE150100909 (S.B.), DE160100023 (M.B.), and DP140100170 (M.B.) and equipment funding through LE110100223 and LE150100001. This work was performed in part at the Micro Nano Research Facility (MNRF) at RMIT University in the Victorian Node of the Australian National Fabrication Facility (ANFF). Facilities and technical support from the RMIT Microscopy and Microanalysis Facility (RMMF), a node of Microscopy Australia, is acknowledged. The authors acknowledge equipment funding from the Australian Research Council through LE150100001. The authors would like to thank Kai Xu for his help in selectivity testing.