Osman, N. S., M. L. Ismail, and N. Sapawe. 2021. “Synthesis of Oil Palm Frond (OPF) Based Silica Nanomaterial via Sol-Gel Method With Enhanced Phenol Removal ”. Journal of Chemical Engineering and Industrial Biotechnology 7 (2): 20-26. https://doi.org/10.15282/jceib.v7i2.6917.