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Vol. 25 No. 11 (2013): Vol 25 Issue 11

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Synthesis, Characterization and Electrochemical Sensing Property of W-MCM-41

https://doi.org/10.14233/ajchem.2013.14263
V. Thatshanamoorthy
Department of Inorganic Chemistry, University of Madras, Guindy Maraimalai Campus, Chennai-600 025, India
V. Narayanan
Department of Inorganic Chemistry, University of Madras, Guindy Maraimalai Campus, Chennai-600 025, India

Corresponding Author(s) : V. Narayanan

vnnara@yahoo.co.in

Asian Journal of Chemistry, Vol. 25 No. 11 (2013): Vol 25 Issue 11

Abstract

Mesoporous tungsten incorporated MCM-41 (W-MCM-41) was prepared by direct hydrothermal method with different weight ratio of Si to W (Si/W = 25, 50, 100 and 150). The synthesized W-MCM-41 was characterized by low angle X-ray diffraction analysis, Fourier transform-infrared spectroscopy and UV-visible spectroscopy. From the XRD of W-MCM-41 it is observed that, when incorporation of tungsten into the MCM-41 matrix, the mesoporous structure is distorted slightly and hence the intensities are found to decrease with increase in tungesten concentration. The FT-IR spectrum of the samples showed that the tungesten was well incorporated within the MCM-41 framework. The morphological properties of the synthesized samples were characterized by scanning electron microscopy which showed that the synthesized samples comprise of highly agglomerated particles. The synthesized W-MCM-41 was used to modify glassy carbon electrode (W-MCM-41/GCE) and the modified electrode was used to detect 4-chlorophenol in a pH 7.4 phosphate buffer solution by cyclic voltammetry. At the W-MCM- 41/GCE, 4-chlorophenol oxidized at less positive potential with larger current response than the bare GCE. The proposed sensor exhibits great potential in the electrochemical sensing of 4-chlorophenol and related pollutants.

Keywords

W-MCM-41 Mesoporous material 4-Chlorophenol Electrochemical sensor
Thatshanamoorthy, V., & Narayanan, V. (2013). Synthesis, Characterization and Electrochemical Sensing Property of W-MCM-41. Asian Journal of Chemistry, 25(11), 6083–6086. https://doi.org/10.14233/ajchem.2013.14263
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