A New Approach for Fabricating PSf/GO-SiO2 Membranes with TEOS Modification for Enhanced Oil-Water Separation

Nasir, Munasir; As'adah, Anis; Putri, Ariyanti Rasiana; Faizzatunnisa, Nuhaa; Sazali, Ezza Syuhada; Taufiq, Ahmad

doi:10.22079/jmsr.2025.2057559.1720

A New Approach for Fabricating PSf/GO-SiO₂ Membranes with TEOS Modification for Enhanced Oil-Water Separation

Document Type : Research Paper

Authors

Munasir Nasir ¹

Anis As'adah ¹

Ariyanti Rasiana Putri ¹

Nuhaa Faizzatunnisa ²

Ezza Syuhada Sazali ³

Ahmad Taufiq ⁴

¹ Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Indonesia

² Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Indonesia

³ Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, Malaysia

⁴ Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Indonesia

10.22079/jmsr.2025.2057559.1720

Abstract

Excessive oil pollution is a serious environmental problem because oil and grease are organic substances that are difficult to degrade by bacteria and can cause long-term contamination. One promising solution to overcome this problem is the use of membrane technology. In this study, PSf/GO-SiO₂ membranes were synthesized using various TEOS concentrations via the phase inversion method. Their performance in filtering oil-in-water emulsions was evaluated based on the flux rate (J), flux decline ratio (FDR), and flux recovery ratio (FRR) using a dead-end filtration system. The results showed that the presence of TEOS affected the membrane structure, mainly by changing the pore size, promoting the formation of micro-voids, and increasing the surface hydrophilicity. Among the tested membranes, PSf/GO-SiO₂ with a TEOS concentration of 0.6 showed the best performance, with a pure water flux (J_w) of 185.64 L/m²·h and a solution flux (J_o) of 177.92 L/m².h. The results also showed a small flux reduction (FDR » 4.16%) and high flux recovery (FRR > 95%). However, excessive silica content led to the formation of thicker membranes and decreased filtration efficiency, characterized by an increase in FDR (up to 12%) and a decrease in FRR (» 88%). These findings highlight the potential of PSf/GO-SiO₂ membranes for advanced wastewater treatment, while also underlining that the developed membranes have high potential for long-term stability performance and excellent antifouling properties

Graphical Abstract