Spinel CoMn2O4 nano-/micro-spheres embedded RGO nanosheets modified disposable electrode for the highly sensitive electrochemical detection of metol
- Authors
- Venkatesh, Krishnan; Muthukutty, Balamurugan; Chen, Shen-Ming; Karuppasamy, Periyakaruppan; Haidyrah, Ahmed S.; Karuppiah, Chelladurai; Yang, Chun-Chen; Ramaraj, Sayee Kannan
- Issue Date
- Feb-2022
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- CoMn2O4@RGO nanocomposite; Screen-printed carbon electrode; Photographic developing agent; Metol; Lake water
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.106, pp.287 - 296
- Journal Title
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
- Volume
- 106
- Start Page
- 287
- End Page
- 296
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88169
- DOI
- 10.1016/j.jiec.2021.11.005
- ISSN
- 1226-086X
- Abstract
- This work focussed on the fabrication of synergetic spinel CoMn2O4 embedded reduced graphene oxide (CoMn2O4@RGO) nanocomposite over the surface of modified screen-printed carbon electrode (SPCE) for highly sensitive and enhanced electrochemical detection of metol (MTL) in 0.05 M phosphate buffer elec-trolyte. The CoMn2O4@RGO nanocomposite material was synthesized by sonochemical method and well-characterized using various spectral and analytical (XRD, TGA, Raman spectroscopic, FE-SEM, HR-TEM & EA) techniques. Cyclic and differential pulse voltammetry techniques were used for the detection of MTL at CoMn2O4@RGO modified SPCE. The present electrochemical sensor shows a dynamic linear response range from 0.01 to 137.65 mu M and the detection limit, quantification, sensitivity were estimated to be 0.050 mu M, 1.64 mu M, and 3.77 mu A mu M-1 cm(-2). Furthermore, the proposed MTL sensor was exhibited numer-ous advantages including very ease fabrication, high selectivity, stability, and reproducibility for the detection of MTL. Based on the obtained experimental data a plausible MTL redox mechanism was pro-posed. In addition, the present electrochemical sensor was applied in real sample analysis at the spiked samples (lake water samples + MTL) observed with good recovery results. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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