Nikhil, S., et al. “Facile Fabrication of G-C3N4 Fe3O4 Photocatalyst With Enhanced Visible-Light Photocatalytic Activity towards the Degradation of Tartrazine Dye”. Asian Journal of Chemistry, vol. 33, no. 10, Sept. 2021, pp. 2293-00, doi:10.14233/ajchem.2021.23305.