Sintesis dan Karakterisasi Silika Sekam Padi sebagai Material Self-Cleaning

Elsandika, Gabriela
Dirgantara, Made
Beladona, Siti Unvaresi Misonia
Pasaribu, Marvin Horale

Jurnal Fisika Unand
Vol 14 No 2 (2025)

This study aimed to valorize rice husk waste by extracting silica and developing a self-cleaning surface coating. Silica was successfully extracted from rice husk ash via an alkaline reflux method followed by acid precipitation. The extracted silica exhibited an amorphous structure with a high purity of 96.7%, as confirmed by X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis. Subsequent modification with Trimethylchlorosilane (TMCS) significantly enhanced the hydrophobicity of the silica, resulting in a contact angle of 99.84° with water. The synthesized silica-based material demonstrates promising potential as a self-cleaning surface coating, offering improved durability and ease of maintenance.