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Reference type: Journal
Authors: Avaz S, Roy RB, Mokkapati VRSS, Bozkurt A, Pandit S, Mijakovic I, Menceloglu YZ
Article Title: Graphene based nanosensor for aqueous phase detection of nitroaromatics.
Publication date: 2017
Journal: RSC Advances
Volume: 7
Issue: (41)
Page numbers: 25519-25527.
DOI: 10.1039/C7RA03860G

Abstract: A graphene-based nanosensor was fabricated to selectively detect nitrotriazolone (NTO) molecules with a molecularly imprinted film via simple electrical measurements. Molecularly imprinted polymer comprising chitosan was used as sensitive layer. Gold electrodes for electrical measurements were lithographically fabricated on Si/SiO2 substrate, followed by monolayer graphene transfer and polymeric film coating. Monolayer graphene and molecularly imprinted polymer were characterized by ATR-FTIR, UV-Vis, SEM and Raman spectroscopy. Transfer-length measurements (TLM) indicate that the sensor selectively and linearly responds against aqueous NTO solutions within a wide range of concentration of 0.01-0.1 mg mL-1 that covers the lowest toxic level of NTO determined by USEPA. This nanosensor with embedded electrodes is re-usable and suitable for field applications, offering real-time electrical measurements unlike current techniques where complex analytics are required
Template and target information: nitrotriazolone, NTO

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