Synthesis, structural characterization and adsorption capacity of H-δ-MnO2. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 7, n. 2, p. 80–85, 2018. Disponível em: https://jca.edu.vn/index.php/jca/article/view/642.. Acesso em: 28 feb. 2025.