In this study, low-cost, environmentally friendly and porous agar/PVA aerogel sorbent materials with highly hydrophobic property were fabricated for the selective separation of oily substances and organic solvents from water by (i) the cross-linking reaction, (ii) freeze drying process and (iii) surface coating treatment. The characterization of agar/PVA aerogels was performed by water solubility, contact angle, SEM, EDX, mapping and XPS measurements. SEM and porosity results revealed that the increase of PVA amount within aerogel matrix led to a decrease in the pore structure of aerogel material. Agar/PVA (100:0) aerogel had good absorption capacity values (19.0–48.1 g·g⁻¹) for various oily substances and organic solvents. All aerogels had excellent separation efficiency (≥99.3%) for chloroform-water mixture. For chloroform-water mixture and emulsion, the flux value of agar/PVA (100:0) aerogel was found to be 4273 L·m⁻²·h⁻¹ and 3094 L·m⁻²·h⁻¹, respectively. New agar/PVA aerogels are promising materials for the effective separation of oil-water or organic solvent-water mixtures and the cleaning of oil-spills from water.

在这项研究中，制备了具有高疏水性的低成本、环保和多孔琼脂/PVA 气凝胶吸附材料，用于通过(i)交联反应(ii)冷冻从水中选择性分离油性物质和有机溶剂干燥过程和(iii)表面涂层处理。通过水溶性、接触角、SEM、EDX、绘图和 XPS 测量对琼脂/PVA 气凝胶进行表征。SEM和孔隙率结果表明，气凝胶基质中PVA含量的增加导致气凝胶材料的孔结构减少。Agar/PVA (100:0) 气凝胶具有良好的吸收能力值 (19.0–48.1 g·g ^-1) 适用于各种油性物质和有机溶剂。所有气凝胶对氯仿-水混合物均具有出色的分离效率（≥99.3%）。对于氯仿-水混合物和乳液，发现琼脂/PVA (100:0) 气凝胶的通量值分别为4273 L·m ^-2 ·h ^-1和3094 L·m ^-2 ·h ^-1。新型琼脂/PVA 气凝胶是用于有效分离油水或有机溶剂水混合物以及从水中清除溢油的有前途的材料。