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Room Temperature Detection of Hydrogen Gas Using Graphene Based Conductometric Gas Sensor

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Graphene materials are under intense research for the fabrication of gas sensors because of their two-dimensional conjugated structures, fast electron mobility and large specific surface areas. In this article, we report on an efficient graphene based H2 gas sensor fabricated by wet chemical methods. Unlike other solid-state gas sensors, the graphene sensor can be operated at room temperature. Changes in the device conductance are measured using digital handheld multimeter for various concentrations of H2 gas adsorbed on the surface of graphene. The outstanding flexibility of the reduced graphene films ensures stable sensing performance in device subjected to extreme bending stress. The advantages of this sensor are very good sensitivity, quick response time, short recovery time, and low power consumption.
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Keywords: Conductometric Gas Sensors; Graphene Nanosheets; Modified Hummer’s Method

Document Type: Research Article

Affiliations: National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai 600025, India

Publication date: May 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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