Carbon nanoparticles were prepared from glycerol by a thermal process in the presence of H3PO4. These particles were spherical with an average diameter of 66 nm and consisted of a carbon core with carboxylic acid and alcohol functional groups on the surface. The particles were characterized using Fourier-transform infrared, electron microscopy, x-ray diffraction, ultraviolet-visible, and fluorescence spectroscopic techniques. Glassy carbon electrodes were modified, by drop casting, with the carbon nanoparticles and used for heavy metal detection by square wave stripping voltammetry. Parameters such as accumulation time, reduction time and reduction were optimized. The glassy carbon electrode modified with carbon nanoparticles were used for the detection of heavy metal ions in tap water. The average recoveries of Pb2+ and Cu2+ in spiked tap water samples were 98.2% and 96 with a relative standard deviation of 7.4% and 8.5% respectively.

Fabrication, characterization and application of carbon nanoparticles for the detection of heavy metal ions in aqueous media

253rd National Meeting (2017)

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