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Synthesis and characterization of C-dots using composite carbon paste electrode as high performance in potentiometric sensors
M. Muthukumaran1, S. Niranjani1, K. Samuel Barnabas1, V. Narayanan2, T. Raju1*, K. Venkatachalam1*

Published in: Journal for Advance Research in Applied Sciences
Volume- 4, Issue-7, pp.85-91, Dec 2017
DPI :-> 16.10089.JARAS.2017.V4I7.8591.2224



Abstract
The newly synthesized C-dots as water-soluble materials using Sodium glucose xanthate (SGX), the composite electrode material was used for the potentiometric sensors for toxic metal ion. Composite carbon paste electrode (CCPE) was prepared from sodium glucose xanthate C-dots, graphite powder and paraffin wax (binder) for the application of metal ions sensing. C-dots fluorescent in nature. The formation of C-dots was confirmed by UV-Visible, photoluminescence and FT-IR, confocal raman spectroscopy. The effect of pHs on the UV-Visible and Fluorescence Spectroscopy of different pH was carried out at the solutions concentration (1mg/ml) at different pHs (pH=1-10). Surface morphology was analyzed using FE-SEM microscopy. The utility of composite carbon paste electrode with C-dots for the potentiometric determination of Cu(II) ion in aqueous medium was demonstrated with different electrolyte solutions and different pHs (pH=1-7). Interestingly C-dots exhibits a good response towards the Cu(II) ion when compared to other metal ions. In the potentiometric sensing the CCPE is the working (indicator) electrode and saturated calomel electrode (SCE) is the reference electrode.

Key-Words / Index Term
C-dots, composite carbon paste electrode (CCPE), potentiometric sensors, Toxic metal ions

How to cite this article
M. Muthukumaran1, S. Niranjani1, K. Samuel Barnabas1, V. Narayanan2, T. Raju1*, K. Venkatachalam1* , “Synthesis and characterization of C-dots using composite carbon paste electrode as high performance in potentiometric sensors”, Journal for Advance Research in Applied Sciences, 4, Issue-7, pp.85-91, Dec 2017. DPI:16.10089.JARAS.V4.I7.2224