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Issue 41, 2017, Issue in Progress
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Graphene based nanosensor for aqueous phase detection of nitroaromatics

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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.

Graphical abstract: Graphene based nanosensor for aqueous phase detection of nitroaromatics

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Publication details

The article was received on 04 Apr 2017, accepted on 01 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7RA03860G
Citation: RSC Adv., 2017,7, 25519-25527
  • Open access: Creative Commons BY license
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    Graphene based nanosensor for aqueous phase detection of nitroaromatics

    S. Avaz, R. B. Roy, V. R. S. S. Mokkapati, A. Bozkurt, S. Pandit, I. Mijakovic and Y. Z. Menceloglu, RSC Adv., 2017, 7, 25519
    DOI: 10.1039/C7RA03860G

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