Electrochemical synthesis of nitrogen-doped carbon quantum dots decorated copper oxide for the sensitive and selective detection of non-steroidal anti-inflammatory drug in berries.

Author(s) Muthusankar, G.; Sasikumar, R.; Chen, S.M.; Gopu, G.; Sengottuvelan, N.; Rwei, S.P.
Journal J Colloid Interface Sci
Date Published 2018 Aug 01

We report a sensitive non-steroidal anti-inflammatory drug aspirin (ASA) sensor studies using the nitrogen-doped carbon quantum dots (N-CQD) decorated copper oxide (CuO). A simplistic approach of electrochemical deposition method has been used to prepare the N-CQD incorporated with copper oxide (N-CQD/CuO) and the resulting composite has characterized by analytical techniques. Modified glassy carbon electrode of N-CQD/CuO/GCE is developed and is used for the sensor studies of aspirin. The modified N-CQD/CuO/GCE has exhibited a higher current (I) response to the oxidation process when compared to N-CQD/GCE, CuO/GCE and bare GCE. Furthermore, it has shown a good linear range of 1-907 µM with a limit of detection (LOD) ∼0.002 µM and sensitivity ∼21.87 µA µM cm. The developed sensor has displayed outstanding repeatability, stability and accumulation time along with better electro-catalytic response in berries for real-life application.

DOI 10.1016/j.jcis.2018.03.095
ISSN 1095-7103
Citation J Colloid Interface Sci. 2018;523:191200.

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