Issue 46, 2016

Novel hydrothermal synthesis of MoS2 nanocluster structure for sensitive electrochemical detection of human and environmental hazardous pollutant 4-aminophenol

Abstract

Herein, we have demonstrated a new electrochemical sensor for trace level detection of environmentally hazardous 4-aminophenol (4-AP) using a glassy carbon electrode (GCE) modified with MoS2 nanoclusters. The MoS2 nanoclusters were fabricated by a simple hydrothermal treatment without using any other organic templates or surfactants. The formation of MoS2 nanoclusters was confirmed by X-ray diffraction, FT-infrared, Raman and energy dispersive X-ray spectroscopies, scanning electron and transmission electron microscopies and selected area electron diffraction studies. The MoS2 modified GCE (MoS2/GCE) shows good electrocatalytic activity towards the redox reaction of 4-AP by means of cyclic voltammetry and differential pulse voltammetry. The DPV detection of 4-AP using MoS2/GCE delivers excellent sensitivity with a low detection limit of 0.03 (±0.008) μM and good linearity in the range of 0.04–17 μM. The sensitivity of the developed electrode is 4.278 (±0.058) μA mM−1 cm−2. The developed sensor displayed good repeatability, reproducibility and selectivity. Moreover, the practical applicability of the MoS2/GCE is demonstrated in water samples which delivered satisfactory recoveries.

Graphical abstract: Novel hydrothermal synthesis of MoS2 nanocluster structure for sensitive electrochemical detection of human and environmental hazardous pollutant 4-aminophenol

Article information

Article type
Paper
Submitted
25 ربيع الثاني 1437
Accepted
05 رجب 1437
First published
06 رجب 1437

RSC Adv., 2016,6, 40399-40407

Novel hydrothermal synthesis of MoS2 nanocluster structure for sensitive electrochemical detection of human and environmental hazardous pollutant 4-aminophenol

J. V. Kumar, R. Karthik, S. Chen, K. Saravanakumar, M. Govindasamy and V. Muthuraj, RSC Adv., 2016, 6, 40399 DOI: 10.1039/C6RA03343A

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