Comparative study on photocatalytic degradation of methylene blue using CoFe2O4, NiFe2O4 and CoNiFe2O4 prepared by sol-gel method. Experimental and Theoretical NANOTECHNOLOGY, [S. l.], v. 10, n. 3, p. 1601–1609, 2026. DOI: 10.56053/10.3.1601. Disponível em: https://etnano.com/index.php/journal/article/view/303.. Acesso em: 15 jul. 2026.