Ani Mulyasuryani, Matlal Fajri Alif, Rahadian Zainul
Magnetic Ion Imprinted Materials (MIIMs) have specific recognition capabilities so that they have been widely used for the manufacture of electrochemical sensors with high selectivity. In this study, an electrochemical sensor has been developed for the detection of Cu(II) by modifying the screen printed carbon electrode (SPCE) by carbon paste-copper(II)MIIM. MIIM is made of a mixture of Fe3O4@SiO2 and Cu(II) 3-aminopropyl triethoxysilane complex. MIIM characterization was based on surface morphology, FTIR spectrum and electrochemical properties of the modified SPCE. At the pH 3, the cathodic peak current from the sensor increases linearly with the Cu(II) concentration in the range from 0 ∼200 nM with a detection limit (S/N = 3) of 3 nM. In addition, the developed sensor exhibits high sensitivity is 0.49 µA/nM with an accuracy of (102.7 ± 1.5) %. The Cu(II) sensor can be applied to surface water samples. © 2024 by SPC (Sami Publishing Company).
Analytical Chemistry Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya, East Java, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, West Sumatra, Padang, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, West Sumatra, Padang, Indonesia; Center for Advanced Material Processing, Artificial Intelligence and Biophysics Informatics (CAMPBIOTICS), Universitas Negeri Padang, Indonesia
