Evaluation of Scan Rate Influence on Cyclic Voltammograms of Copper Electrodes Coated with PS-CS-GA/ZnO Nanocomposite

Anceu Murniati; Ilahi Hidayanti Nur; Niki Gumelar; Senadi Budiman; Buchari Buchari; Suryo Gandasasmita; Zeily Nurachman

doi:10.26874/jkk.v7i1.256

Anceu Murniati Study Program of Master of Chemistry, Faculty of Sciences and Informatics, Universitas Jenderal Achmad Yani, Indonesia; Material and Environmental Development Center, Universitas Jenderal Achmad Yani, Indonesia
Ilahi Hidayanti Nur Department of Chemistry, Faculty of Sciences and Informatics, Universitas Jenderal Achmad Yani, Indonesia; Material and Environmental Development Center, Universitas Jenderal Achmad Yani, Cimahi, Indonesia
Niki Gumelar Study Program of Master of Chemistry, Faculty of Sciences and Informatics, Universitas Jenderal Achmad Yani, Indonesia; Material and Environmental Development Center, Universitas Jenderal Achmad Yani, Indonesia
Senadi Budiman Study Program of Master of Chemistry, Faculty of Sciences and Informatics, Universitas Jenderal Achmad Yani, Indonesia; Material and Environmental Development Center, Universitas Jenderal Achmad Yani, Indonesia
Buchari Buchari Analytical Chemistry Research Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha No. 10 Bandung 40132, Indonesia
Suryo Gandasasmita Analytical Chemistry Research Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha No. 10 Bandung 40132, Indonesia
Zeily Nurachman Biochemistry Research Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha No. 10 Bandung 40132, Indonesia

DOI: https://doi.org/10.26874/jkk.v7i1.256

Keywords: chitosan, cyclic voltammetry, modified electrode, nanocomposite, polysulfone

Abstract

Copper (Cu) is widely utilized as an electrode material due to its high conductivity and relatively low cost. This study aims to develop nanocomposite-modified Cu electrodes using polysulfone (PS), chitosan (CS), glutaraldehyde (GA), and zinc oxide (ZnO) to form PS-CS-GA/ZnO-NP modified Cu electrodes. The nanocomposite was prepared in the proportions of 48.8% PS, 24.4% CS, 24.4% ZnO, and 2.4% GA using the phase inversion method. The characterization of the PS-CS-GA/ZnO nanocomposite-modified Cu electrode was conducted using cyclic voltammetry with a 0.01 M K₃[Fe(CN)₆] in 0.1 M KCl. The cyclic voltammogram profile was obtained at a scan rate of 25 mV/s, exhibiting an ipa/ipc ratio of 0.93 within a potential of -1.5 to +0.4 V vs Ag/AgCl over 15 cycles. The FTIR spectrum of the PS-CS-GA/ZnO nanocomposite thin film displayed a peak at 1668 cm^-1, indicating the presence of C=N groups, which suggests a cross-linking interaction between CS and GA.