Yulkifli, Alwi Nofriandi, Illyas Md Isa, Norhayati Hashim, Mohamad Syahrizal Ahmad, Mohamad Idris Saidin, Alizar, Yenni Darvina, Washilla Audia, Suyanta, Ratno Nuryadi, Novesar Jamarun
This study reports the fabrication and characterization of a screen-printed carbon electrode (SPCE) modified with pyridinium-antimony trichloride (PAT) for copper ion (Cu2+) detection in aqueous environments. The SPCE was prepared by printing carbon ink onto a polyethylene terephthalate-mica substrate, while the PAT material was characterized using transmission electron microscope, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. Electrochemical performance was evaluated using cyclic voltammetry, electrochemical impedance spectroscopy, and chronocoulometry, exhibited two distinct linear ranges (0.1-10 μM, R2 = 0.998; 0.1-10 mM, and R2 = 0.938). The sensor demonstrated exceptional selectivity against ten interfering metal ions, exhibiting high reproducibility (relative standard deviation, RSD, 2.08%) and repeatability (RSD 3.22%). These metrics confirm the sensor's reliability and consistency in Cu2+ detection. © 2025 IEEE.
Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Padang, 25132, Indonesia; Doctoral Program of Environmental Science, Postgraduate Program, Universitas Negeri Padang, Padang, 25132, Indonesia; Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Perak, 35900, Malaysia; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Padang, 25132, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia; Center of Materials Technology, Agency for the Assessment and Application of Technology, Banten, 15314, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Andalas, Padang, 25175, Indonesia
