3,5-Diamino-1,2,4-triazole@electrochemically reduced graphene oxide film modified electrode for the electrochemical determination of 4-nitrophenol Deivasigamani Ranjith
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
3,5-Diamino-1,2,4-triazole@electrochemically reduced graphene oxide film modified electrode for the electrochemical determination of 4-nitrophenol
Deivasigamani Ranjith
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| Creator |
Ranjith Kumar, D.
Kesavan, S. Lara Baynosa, M. Shim, J. |
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| Subject |
Electrodics and Electrocatalysis
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| Description |
In this study, an eco-friendly benign method for the modification of electrochemically reduced graphene
oxide (ERGO) on glassy carbon (GC) surface and electrochemical polymerized 3,5-diamino-1,2,4-triazole
(DAT)
film composite (pDAT@ERGO/GC) electrode was developed. The surface morphologies of the
pDAT@ERGO/GC modified electrode were analyzed by
field emission scanning electron microscopy
(FESEM). FESEM images indicated that the ERGO supported pDAT has an almost homogeneous
morphology structure with a size of 70 to 80 nm. It is due to the water oxidation reaction occurred while
pDAT@ERGO/GC fabrication peak at +1.4 V leads to O2 evolution and oxygen functional group
functionalization on ERGO, which confirmed by X-ray photoelectron spectroscopy (XPS). In contrast,
the bare GC modified with pDAT showed randomly arranged irregular bulky morphology structure
compared to those of pDAT@ERGO/GC. Electrochemical reduction of graphene oxide was confirmed by
Raman spectroscopy, XPS, and electrochemical impedance spectroscopy (EIS). The pDAT@ERGO/GC
modified electrode was used for the electrochemical determination of 4-nitrophenol (4-NP). The 4-NP
oxidation peak was observed at +0.25 V, and the differential pulse voltammetry demonstrated wide
concentration range (5–1500 mM), high sensitivity (0.7113 mA mM�1), and low limit of detection (37 nM).
Moreover, the pDAT@ERGO/GC electrode was applied to real water sample analysis by standard addition
method, where in good recoveries (97.8% to 102.4%) were obtained.
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| Publisher |
Elsevier B.V.
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| Date |
2017-06-23
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3225/1/059-2017.pdf
Ranjith Kumar, D. and Kesavan, S. and Lara Baynosa, M. and Shim, J. (2017) 3,5-Diamino-1,2,4-triazole@electrochemically reduced graphene oxide film modified electrode for the electrochemical determination of 4-nitrophenol Deivasigamani Ranjith. Electrochimica Acta, 246. pp. 1131-1140. |
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| Relation |
http://www.e lsevier.com/loca te/ele cta cta
http://cecri.csircentral.net/3225/ |
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