Graphene based nanosensor for aqueous phase detection of nitroaromatics
Artikel i vetenskaplig tidskrift, 2017

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.

Författare

S. Avaz

Sabanci Universitesi

R. B. Roy

Sabanci Universitesi

Venkata Raghu Mokkapati

Chalmers, Biologi och bioteknik, Systembiologi

A. Bozkurt

Sabanci Universitesi

Santosh Pandit

Chalmers, Biologi och bioteknik, Systembiologi

Ivan Mijakovic

Chalmers, Biologi och bioteknik, Systembiologi

Y. Z. Menceloglu

Sabanci Universitesi

RSC Advances

2046-2069 (ISSN)

Vol. 7 41 25519-25527

Ämneskategorier

Analytisk kemi

DOI

10.1039/c7ra03860g