Ramadhanti, A.R. , Awaluddin, A. , Nurhayati, N. and Siregar , S.H. 2025. Degrading colour with magnets: degradation of methylene blue MnOx-Fe3O4 using the photo-fenton method. Acta Chimica Asiana. 8, 2 (Nov. 2025), 726–732. DOI:https://doi.org/10.29303/aca.v8i2.236.