Removal of congo red dye from aqueous solution using nano ZnO/chitosan composite. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 11, n. 4, p. 57–62, 2022. DOI: 10.51316/jca.2022.070. Disponível em: https://jca.edu.vn/index.php/jca/article/view/2022.070.. Acesso em: 28 jul. 2026.