Electrochemical Determination of Lead and Copper Ions by Using UiO-66/TiO2-Carbon Paste Electrode
نویسندگان
1 Chemical Engineering Department, Faculty of Engineering, University of Guilan, Rasht, I.R. IRAN
2 Biofuel & Renewable Energy Research Center, Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, I.R. IRAN
3 Chemical Engineering Department, Faculty of Engineering, University of Guilan, Rasht, I.R. IRAN
4 Chemical Engineering Department, Faculty of Engineering, University of Guilan, Rasht, I.R. IRAN
5 Biofuel & Renewable Energy Research Center, Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, I.R. IRAN
6 Biofuel & Renewable Energy Research Center, Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, I.R. IRAN
doi
10.30492/ijcce.2024.2031984.6647چکیده
In this study, carbon paste fabricated and modified a novel sensitive voltammetric sensor based on UiO-66/TiO2 MOF nanocomposite through the solvothermal method. The electrode surface morphology and enhancement study were performed through FESEM and FT-IR. The electrochemical behavior of the modified electrode was evaluated using cyclic voltammetry in the [Fe (CN)6]3-/4-solution and represented good electrocatalytic activity due to the synergy result of TiO2 and UiO-66. For quantitative analyses, differential pulse voltammetry was used under optimal conditions. The calibration curves show linear response in the concentration range of 2-100 μM with the lowest limit of detection of 0.851 µM and 0.436 µM were obtained for Pb2+ and Cu2+, respectively. The sensor exhibited high sensitivity and selectivity, good reproducibility, desirable stability, and excellent performance in real samples.
