Investigation of the photoactivation effect of TiO onto carbon-clay paste electrode by cyclic voltammetry analysis.

In this work, a cyclic voltammetry analysis for the detection of Ascorbic Acid (AA) based on a carbon-clay paste electrode modified with titanium dioxide (CPEA/TiO) is presented. The electrochemical sensor was prepared using clay and carbon graphite, mixed with TiO to investigate the electrode behavior towards the detection of AA. Comprehensive characterization approaches including X-ray diffraction (XRD), Selected area electron diffraction (SAED), Transmission electron microscopy (TEM), Fourier transform infra-red spectroscopy (FTIR) were carried out on different samples.

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay.

Calcinated and acidified clay modified carbon graphite electrode was deployed in the simultaneous evaluation of traces of Pb and Cd in solution. After 5 minutes of accumulation in the circuit, the sensitivity of the electrode was evaluated in a solution of NaSO (0.1 M) by square wave voltammetry on the one hand with Pb (II) and on the other hand with Cd (II).