Nuzula, A., Dewata, I., Kurniawati, D., & Effendi, J. (2026). Degradation of Methylene Blue by a Photo-Fenton System Based on Copper Ferrite Catalyst and Ascorbic Acid. Hydrogen: Jurnal Kependidikan Kimia, 14(2), 380–386. https://doi.org/10.33394/hjkk.v14i2.20202