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Issue 44, 2019
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Simple hydrothermal synthesis of defective CeMoSe2 dendrites as an effective electrocatalyst for the electrochemical sensing of 4-nitrophenol in water samples

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Abstract

This work reports the fabrication of a highly selective and novel electrocatalyst for electrochemical sensing applications. To this aim, CeMoSe2 dendrites were synthesized via hydrothermal synthesis and characterized by using various analytical techniques such as X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX) spectroscopy, transmission electron microscopy (TEM) and X-ray photoelectric spectroscopy (XPS). Further, the conductivity of the as-prepared CeMoSe2 dendritic structure was studied by electrochemical impedance spectroscopy (EIS). The higher conductivity of the CeMoSe2 dendrites made them essential for the electrochemical detection of 4-nitrophenol (4-NP) using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Electrochemical studies proved that the CeMoSe2 dendrite modified electrode (GCE) shows a low detection limit of 0.0035 μM and a higher sensitivity of 1.24 μA μM−1 cm−2. Besides this, the real time application of the proposed sensor was tested in river water, which resulted in recovery values of 103.3 to 108.6%. The obtained recovery values also proved that CeMoSe2/GCE is more suitable for the detection of 4-NP. Thus this simplistic 4-NP sensor is also advantageous due to its simplicity, reliability, low cost, and high stability, rendering it suitable for practical applications in real sample systems.

Graphical abstract: Simple hydrothermal synthesis of defective CeMoSe2 dendrites as an effective electrocatalyst for the electrochemical sensing of 4-nitrophenol in water samples

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Publication details

The article was received on 26 Jul 2019, accepted on 04 Oct 2019 and first published on 24 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ03891D
New J. Chem., 2019,43, 17200-17210

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    Simple hydrothermal synthesis of defective CeMoSe2 dendrites as an effective electrocatalyst for the electrochemical sensing of 4-nitrophenol in water samples

    S. Ramki, R. Sukanya, S. Chen, M. Sakthivel and J. Y. Wang, New J. Chem., 2019, 43, 17200
    DOI: 10.1039/C9NJ03891D

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