Fabrication of MnO2 - based electrochemical electrodes for the determination of copper (II) ion in water. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 12, n. 1, p. 101–105, 2023. DOI: 10.51316/jca.2023.016. Disponível em: https://jca.edu.vn/index.php/jca/article/view/2023.016.. Acesso em: 1 may. 2026.