Reduced Graphene Oxide/α-Cyclodextrin-Based Electrochemical Sensor: Characterization and Simultaneous Detection of Adenine, Guanine and Thymine

Year 2017, Volume: 21 Issue: 1, 146 - 152, 15.04.2017

Erhan Zor

https://doi.org/10.19113/sdufbed.72272

Cited By: 2

Abstract

Graphene, the rising star of carbon nanomaterials, is a single layer of sp²-bonded carbon atoms patterned in a 2D honeycomb network. Thanks to its unique features, graphene has attracted enormous attention and it has arisen various applications in the fields of optical and electrochemical sensors. In the present work, reduced graphene oxide/alpha cyclodextrin (rGO/α-CD) is proposed as a nanocomposite for individual and simultaneous detection of adenine, guanine and thymine. rGO/α-CD has been characterized by FT-IR, Raman spectroscopy, AFM, HR-TEM and SEM techniques. Cyclic voltammetry, differential pulse voltammetry and chronoamperometry techniques were utilized for detection of adenine, guanine and thymine. The limit of detection (LOD) values for adenine, guanine and thymine were calculated to be 145.5, 38.9 and 52.9 nmol L^-1, respectively. The results show that the developed sensor can be utilized for the determination of adenine, guanine and thymine in human serum, indicating its promising application in the analysis of real samples.

Keywords

Graphene Oxide, Cyclodextrin; Electrochemical Sensor; Adenine; Guanine; Thymine

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