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Electrochemical determination of 4-nitrophenol in environmental water samples using porous graphitic carbon nitride-coated screen-printed electrode.

Authors
  • Ramalingam, Manikandan1
  • Ponnusamy, Vinoth Kumar2, 3
  • Sangilimuthu, Sriman Narayanan4
  • 1 Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung City, 807, Taiwan, Republic of China. , (China)
  • 2 Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung City, 807, Taiwan, Republic of China. [email protected] , (China)
  • 3 Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung City, 807, Taiwan, Republic of China. [email protected] , (China)
  • 4 Department of Analytical Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai, Tamil Nadu, 600 025, India. , (India)
Type
Published Article
Journal
Environmental Science and Pollution Research
Publisher
Springer-Verlag
Publication Date
May 01, 2020
Volume
27
Issue
15
Pages
17481–17491
Identifiers
DOI: 10.1007/s11356-019-05494-3
PMID: 31152423
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

We demonstrate a facile preparation of novel oxidized graphitic carbon nitride (O-gC3N4) applied as an efficient electrocatalyst for highly sensitive electrochemical detection of 4-nitrophenol (4-NP) in environmental water samples. As-prepared O-gC3N4 were characterized by attenuated total reflection infrared spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction methods for the confirmation of different functional groups and structural phase of O-gC3N4. The surface morphology of the O-gC3N4 was characterized using field emission scanning electron microscopy and high-resolution transmission electron microscopy. Results revealed that the synthesized gC3N4 possessed acid functional groups, nanosheet with porous in nature. The O-gC3N4 was drop cast on the screen-printed electrode (SPE), and it was applied for electrochemical determination of 4-NP using cyclic voltammetry and differential pulse voltammetry (DPV) techniques. The O-gC3N4/SPE exhibited excellent electrocatalytic activity towards 4-NP detection. Under the optimized experimental conditions, the DPV response of O-gC3N4/SPE showed good linear range from 0.0033 to 0.313 μM with a detection limit (S/N = 3) of 0.075 μM. The developed electrode has successfully applied for the determination of 4-NP in different environmental water samples, and the results have shown satisfied.

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