Gallo, Jurex, Josephine Borja, Susan Gallardo, Pailin Ngaotrakanwiwat, Cris Salim, and Hirofumi Hinode. 2011. “Nanotitania-Activated Carbon With Enhanced Photocatalytic Activity: A Comparison Between Suspended and Immobilized Catalyst for Turquoise Blue Removal”. ASEAN Journal of Chemical Engineering 11 (2), 59-69. https://jurnal.ugm.ac.id/v3/AJChE/article/view/8092.