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A bifunctional MoS 2 /SGCN nanocatalyst for the electrochemical detection and degradation of hazardous 4-nitrophenol.

التفاصيل البيبلوغرافية
العنوان: A bifunctional MoS 2 /SGCN nanocatalyst for the electrochemical detection and degradation of hazardous 4-nitrophenol.
المؤلفون: Ganesh PS; Interaction Laboratory, Advanced Technology Research Center, Future Convergence Engineering, Korea University of Technology and Education, Cheonan 31253, Republic of Korea. Electronic address: ganeshps11@gmail.com., Elugoke SE; Centre for Material Science, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa., Lee SH; Interaction Laboratory, Advanced Technology Research Center, Future Convergence Engineering, Korea University of Technology and Education, Cheonan 31253, Republic of Korea., Ko HU; Interaction Laboratory, Advanced Technology Research Center, Future Convergence Engineering, Korea University of Technology and Education, Cheonan 31253, Republic of Korea., Kim SY; Interaction Laboratory, Advanced Technology Research Center, Future Convergence Engineering, Korea University of Technology and Education, Cheonan 31253, Republic of Korea. Electronic address: sykim@koreatech.ac.kr., Ebenso EE; Centre for Material Science, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa.
المصدر: Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2024 Jul 16; Vol. 282, pp. 116701. Date of Electronic Publication: 2024 Jul 16.
Publication Model: Ahead of Print
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 7805381 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1090-2414 (Electronic) Linking ISSN: 01476513 NLM ISO Abbreviation: Ecotoxicol Environ Saf Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Amsterdam, Netherlands : Elsevier
مستخلص: Herein, we reported the dual functions of molybdenum disulfide/sulfur-doped graphitic carbon nitride (MoS 2 /SGCN) composite as a sensing material for electrochemical detection of 4-NP and a catalyst for 4-NP degradation. The MoS 2 nanosheet, sulfur-doped graphitic carbon nitride (SGCN) and MoS 2 /SGCN were characterized using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) spectroscopy and X-ray photoelectron spectroscopy (XPS). Electrochemical characterization of these materials with electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1 mM K 4 [Fe(CN) 6 ] 3-/4- show that the composite has the lowest charge transfer resistance and the best electrocatalytic activity. The limit of detection (LOD) and the linear range of 4-nitrophenol at MoS 2 /SGCN modified glassy carbon electrode (MoS 2 /SGCN/GCE) were computed as 12.8 nM and 0.1 - 2.6 μM, respectively. Also, the percentage recoveries of 4-NP in spiked tap water samples ranged from 97.8 - 99.1 %. The electroanalysis of 4-NP in the presence of notable interferons shows that the proposed electrochemical sensor features outstanding selectivity toward 4-NP. Additionally, the results of the catalytic degradation of 4-NP at MoS 2 /SGCN show that the nanocatalyst catalyzed the transformation of 4-NP to 4-aminophenol (4-AP) with a first-order rate constant (k) estimated to be 4.2 ×10 -2 s -1 . The results of this study confirm that the MoS 2 /SGCN nanocatalyst is a useful implement for electroanalytical monitoring and catalytic degradation of the hazardous 4-NP in water samples.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
فهرسة مساهمة: Keywords: 4-nitrophenol; Degradation; Electrochemical sensors; Environmental monitoring; Sulfur-doped graphitic carbon nitride
تواريخ الأحداث: Date Created: 20240717 Latest Revision: 20240717
رمز التحديث: 20240718
DOI: 10.1016/j.ecoenv.2024.116701
PMID: 39018731
قاعدة البيانات: MEDLINE
الوصف
تدمد:1090-2414
DOI:10.1016/j.ecoenv.2024.116701