Hydrothermal synthesis of glucose derived carbon surface on cupric oxide (C@CuO) nanocomposite for effective electro-oxidation of catechol
- Authors
- Sivakumar, Mani; Muthukutty, Balamurugan; Chen, Tse-Wei; Chen, Shen-Ming; Maiyalagan, T.; Pandi, Karuppiah; Ali, M. Ajmal; Al-Mohaimeed, Amal M.
- Issue Date
- Jul-2022
- Publisher
- ELSEVIER
- Keywords
- Cupric oxide; Glucose-derived carbon; C@CuO; Catechol; Electrochemical sensor
- Citation
- MICROCHEMICAL JOURNAL, v.178
- Journal Title
- MICROCHEMICAL JOURNAL
- Volume
- 178
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88167
- DOI
- 10.1016/j.microc.2022.107433
- ISSN
- 0026-265X
- Abstract
- In this work, we prepared carbon surface on cupric oxide (C@CuO) utilizing facile hydrothermal with glucose as a carbon precursor and applied it in different annealing treatments (300, 400, and 500 degrees C). As-prepared materials were characterized by various physicochemical techniques such as FE-SEM, EDX, elemental mapping analysis, XRD, Raman, and EIS spectroscopy. The composite C@CuO annealed at 400 degrees C (C@CuO-2) shows a considerable amount of carbon surface on metal oxide (CuO) with a well-defined structure, high crystallinity, and low charge transfer resistance. The as-prepared composites were exploited to reduce the charge transfer resistance and enhance the electrocatalytic properties. Due to the promising properties of C@CuO-2, it is utilized as an active electrode modifier (C@CuO-2/GCE) for the electrochemical sensing of Catechol (CC). The electrochemical experiments were performed using cyclic voltammetry (CV) and amperometric (i-t) techniques. This C@CuO-2 composite shows an excellent activity towards the oxidation of CC compared to C@CuO-1 & 3 respectively. In addition, the C@CuO-2 modified GCE exhibits a substantial linear range (0.001 to 15.75 mM), sensitivity (259.19 mu A mM-1 cm-2), and limit of detection (0.023 mu M) respectively. Moreover, the C@CuO-2 composite also shows the perspective applications in real samples analysis.
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