Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 6, 2025

Oil spills pose a major environmental challenge, highlighting the urgent need for effective materials capable of achieving efficient oil-water separation to mitigate their detrimental impacts. While various bio-based and synthetic adsorbents have been explored this purpose, existing often suffer from low adsorption capacity, poor reusability, limited hydrophobicity, or concerns. In particular, natural frequently exhibit inherent hydrophilicity, limiting effectiveness in selective oil adsorption. To address gap, we developed novel adsorbent derived sphagnum moss, modified via sequential pretreatment with hydrogen peroxide sodium hydroxide, followed by chemical functionalization silane. This modification enhanced hydrophobicity structural stability, overcoming limitations unmodified adsorbents. Characterization using SEM, XPS, FTIR, TGA confirmed successful grafting hydrophobic functional groups formation uniformly rough surface, leading water contact angle 157°. Comparative analysis demonstrated that moss exhibited significantly capacity 22.756 g/g motor oil, outperforming conventional adsorbents, including currently prevalent biological (1.69-12.8 g/g) biochar (8.1-18.2 g/g). Furthermore, kinetics conformed pseudo-second-order model, indicating chemisorption as dominant mechanism. suggests strong interactions between molecules functionalized contributing efficiency selectivity. These findings highlight novelty, superior performance, compatibility an sustainable solution spill remediation. Its high affinity, reusability make it promising alternative providing eco-friendly approach management restoration.

Language: Английский