Green reduction of graphene oxide using Indian gooseberry (amla) extract for gas sensing applications

Mascarenhas, Fiona Crysta and Sykam, Nagaraju and Selvakumar, M and Mahesha, M G (2020) Green reduction of graphene oxide using Indian gooseberry (amla) extract for gas sensing applications. Journal of Environmental Chemical Engineering, 8. ISSN 2213-3437

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Abstract

Graphene preparation from reduction of graphene oxide (GO) which is known as reduced graphene oxide (rGO) is considered as one of the promising methods for the development of graphene-based devices on a large scale at low-cost. In the present work, rGO has been successfully prepared using Indian gooseberry (Amla) extract, a green reducing agent, and its sensitivity for ammonia gas molecules has been studied using chemiresistor configuration. About 5 % sensitivity was observed for 3 ppm concentration of ammonia gas. Raman and X-ray photoelectron spectroscopy (XPS) spectra have confirmed the formation of rGO. Fourier transform infrared spectroscopy (FTIR), ultraviolet visible (UV–vis) spectroscopy and electron microscopy have been adopted for evaluating the quality of synthesized rGO. In addition, the green synthesized rGO has been evaluated for the device suitability by comparing its quality and performance with rGO synthesized using chemical reducing agent (hydrazine hydrate).

Item Type: Article
Uncontrolled Keywords: rGO Green reducing agent Chemical sensor Raman spectroscopy XPS
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 25 Jun 2020 10:56
Last Modified: 25 Jun 2020 10:56
URI: http://eprints.manipal.edu/id/eprint/155351

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