ZnS-Montmorillonite: An Application as Electrochemical Sensor

Siriphorn Udkhao; Atchana Wongchaisuwat; Ladda Meesuk

doi:10.4028/www.scientific.net/KEM.538.312

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ZnS-Montmorillonite: An Application as Electrochemical Sensor
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 538ZnS-Montmorillonite: An Application as...

ZnS-Montmorillonite: An Application as Electrochemical Sensor

Abstract:

Sensors based on clay-modified electrode have been studied extensively. They have been made from different intercalation compounds to determine both organic and inorganic species. Various analytical techniques have been applied for clay-modified electrodes. In this work, we used ZnS-montmorillonite as a sensor to construct an electrochemical electrode or potentiometric electrode by mixing ZnS-montmorillonite with graphite, polytetrafluoroethylene (PTFE) and carboxymethylcellulose (CMC) in an appropriate ratio. It was found that, the electrode gave best response to sulfide ion compared with other ions. The graph plotted between potential in mV against log[S2-] gave slope near 29.5 due to Nernst equation. The pH studied showed that the potential was almost constant at pH 4-11 and pH 4-9 in 0.01 M and 0.001 M of S2- solutions, respectively. This implied that the sensor could be used at a wide range of pH. The electrode also gave good precision.

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Periodical:

Key Engineering Materials (Volume 538)

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312-315

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https://doi.org/10.4028/www.scientific.net/KEM.538.312

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Online since:

January 2013

Authors:

Siriphorn Udkhao, Atchana Wongchaisuwat, Ladda Meesuk

Keywords:

Clay Modified Electrode, Electrochemical Sensor, Intercalation, Montmorillonite, ZnS

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References

[1] M. Darder, M. Colilla, E. Ruiz-Hitzky, Chitosan-clay nanocomposite: application as electrochemical sensors, Appl. Clay Sci. 28 (2005) 199-208.

DOI: 10.1016/j.clay.2004.02.009

Google Scholar

[2] S. Hu, Electrocatalysis reduction of molecular oxygen on a sodium montmorillonite-methyl viologen carbon paste chemically modified electrode, J. Electroanal. Chem. 463 (1999) 253-257.

DOI: 10.1016/s0022-0728(98)00445-8

Google Scholar

[3] F. J. Anaissi, G. J. F. Demets, H. E. Toma, A. C. V. Coelho, Modified electrodes based on mixed bentonite vanadium (V) oxide xerogel, J. Electroanal. Chem. 464 (1999) 48-53.

DOI: 10.1016/s0022-0728(98)00465-3

Google Scholar

[4] P. Falaras, F. Lezou, P. Pomonis, A. Ladavos, Al-pillared acid-activated montmorillonite modified electrodes, J. Electroanal. Chem. 486 (2000) 156-165.

DOI: 10.1016/s0022-0728(00)00133-9

Google Scholar

[5] N. Khaorapapong, A. Ontam, M. Ogawa, Formation of ZnS and CdS in the interlayer spaces of montmorillonite. Appl. Clay Sci. 50 (2010) 19-24.

DOI: 10.1016/j.clay.2010.06.013

Google Scholar