A. . Luthfiah, Y. Deawati, M. L. Firdaus, I. Rahayu, and D. R. . Eddy, “Silica from Natural Sources: a Review on the Extraction and Potential Application as a Supporting Photocatalytic Material for Antibacterial Activity”, sci. technol. indones., vol. 6, no. 3, pp. 144–155, Jul. 2021.