Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent

• DOI: 10.3390/ma15228211
• Publication Date: 2022-11-21T09:33:32Z
• Authors: A. Alhadhrami; Gehad G. Mohamed; Ahmed H. Sadek; Sameh H. Ismail; A. A. Ebnalwaled; Abdulraheem S. A....
• Keywords: Husk

Silica nanoparticles (SiO2 NPs) are one of the most well-studied inorganic for many applications. They offer advantages tunable size, biocompatibility, porous structure, and larger surface area. Thus, in this study, a high yield SiO2 NPs was produced via chemical treatment rice husk ash by sol-gel method. Characteristics prepared were validated using different characterization techniques. Accordingly, phase, composition, morphological, spectroscopic properties sample studied. The average particle size found to be approximately 60-80 nm area 78.52 m²/g. examined as photocatalysts degradation methyl orange (MO) dye under UV irradiation. It that intensity characteristic absorption band MO decreased gradually with exposure time increasing, which means successful photodegradation NPs. Moreover, antibacterial activity obtained investigated counting coliform bacteria water probable number (MPN) index results revealed MPN untreated treated estimated 170 CFU/100 mL 10 mL, respectively, resulting bacterial growth inhibition 94.12%.