Investigation of the photoactivation effect of TiO2 onto carbon-clay paste electrode by cyclic voltammetry analysis

Atrazine degradation through a heterogeneous dual-effect process using Fe–TiO2-allophane catalysts under sunlight

“…In TiO 2 -allophane and Fe–TiO 2 -allophane catalysts, the effect arises from the interaction of Ti +4 with Si–O groups. A new signal appears at 934 cm −1 , associated with the stretching vibration of Si–O–Ti groups, as reported in studies of zeolite, silica and, clay modified with titanium dioxide [ [52] , [53] , [54] ]. This band at 934 cm −1 intensifies with increasing TiO 2 percentage in the catalyst, whereas bands associated with tetrahedral aluminosilicate decrease.…”

Recent advances in electrochemical sensors and biosensors for monitoring drugs and metabolites in pharmaceutical and biological samples

“…Clay has attractive characteristics, like high specific surface area and cation exchange capacity [ 46 , 47 ]. Bakary Tigana Djonse Justin et al [ 48 ] recently fabricated a titanium dioxide modified carbon clay paste electrode (CPEA/TiO 2 /UV) that allows the analysis of ascorbic acid in pharmaceutical tablets using CV.The sensitivity of the electrode is enhanced by photoactivation of TiO 2 by light irradiation (with a 100 W lamp), which produces electron (e)/hole (h+) pairs upon absorption of appropriate light energy [ 49 ]. The detection limit is 0.732 μmol l -1 in the range of 0.15-0.850 μmol l -1 .…”

Effect of indomethacin on the electrical conductance and electrochemical voltammetry of copper chloride in methanol, ethanol, and their binary mixture with water

“…Cyclic voltammetry is a commonly used electrochemical technique that can provide information about the redox behavior and kinetics of a system [ 11 , 12 ]. As the working electrode's potential changes linearly over time during cyclic voltammetry, oxidation and reduction reactions in the system take place.…”