Frequent occurrence of oil spill accidents and heavy discharge of oily wastewater lead to serious environmental pollution. The sustainable utilization of natural materials offers non-toxic and renewable methods for oil waste adsorption. A new oil absorbent wood material was therefore developed using the deep eutectic solvent (DES) treatment and subsequently hexadecyltrimethoxysilane (HDTMS) hydrophobic coating. Compared to the conventional chemical approach using NaOH-Na₂SO₃ and NaClO₂, the DES delignification was more favorable towards remaining original wood structures attributing to its dissolving mechanism avoiding chemical hydrolysis. Chemical analysis showed that more residual lignin and hemicellulose remained in the DES-delignified wood compared to those treated by conventional chemical approaches. The specific surface area increased approximately 19-fold from 1.3 to 24.9 m² g⁻¹ after the DES delignification of wood. The DES-delignified wood exhibited excellent mechanical compressibility, i.e., 97% height retention after 100 compression-releasing cycles at 90% strain, which was beneficial to the oil absorption and squeeze application. The DES-delignified wood was then coated by HDTMS to be endowed superhydrophobic surfaces for oil absorption. The developed wood showed high capacity to absorb various types of oils, recording 37 g⁻¹ for absorbing silicone, which is highly competitive compared to current available materials and techniques. This novel oil absorbent wood can be produced using abundantly available wood resource and is eco-friendly in production due to the employ of re-usable DES. This sustainable novel oil-absorber may be widely applicable for cleaning oily wastewater.

溢油事故的频繁发生和含油废水的大量排放导致严重的环境污染。天然材料的可持续利用为油渣吸附提供了无毒且可再生的方法。因此，使用深共熔溶剂（DES）处理以及随后的十六烷基三甲氧基硅烷（HDTMS）疏水涂层开发了一种新的吸油木材料。与使用NaOH-Na ₂ SO ₃和NaClO ₂的常规化学方法相比，DES的去木质作用更有利于保留原始的木质结构，这归因于其溶解机理，避免了化学水解。化学分析表明，与通过常规化学方法处理的木质素和半纤维素相比，在DES脱木质素的木材中残留的木质素和半纤维素残留量更高。比表面积从1.3增至24.9 m ² g ^-1约19倍经过DES木质化处理。DES脱木质处理的木材表现出出色的机械压缩性，即在90％应变下经过100次压缩释放循环后的高度保留率为97％，这有利于吸油和挤压应用。然后通过HDTMS对DES脱木漆的木材进行涂覆，使其具有超疏水的表面，以吸收油。发达的木材显示出高的吸收各种类型油的能力，记录了37 g ^-1的吸收硅酮的能力，与现有的材料和技术相比具有很高的竞争力。这种新颖的吸油木材可以使用大量可用的木材资源生产，并且由于采用了可重复使用的DES，因此在生产中对环境友好。这种可持续的新型吸油剂可广泛应用于清洁含油废水。