Biomass carbon aerogels are emerging as attractive versatile materials have broad potential applications in various fields including energy storage, oil absorption and catalysts due to their abundance in nature, low cost and environmental friendliness. Here, we have successfully prepared a compressible, superhydrophobic and multifunctional hierarchical biomass [email protected]₂@MnO₂ aerogel (HBCSM aerogel) by using cost-effective and environmentally friendly sisal cellulose as main raw material. During this process, the [email protected]₂ aerogel (CS aerogel) was fabricated using sol-gel process, followed by carbonization to form biomass [email protected]₂ aerogel (BCS aerogel). Then, the HBCSM aerogel was fabricated by in situ assembly of MnO₂ nanosheets on the surface of the BCS aerogel under hydrothermal conditions. The incorporation of hierarchical SiO₂@MnO₂ structure into the HBCSM aerogel could not only improve the surface roughness and hydrophobic properties but also enhance the absorption capacity and mechanical durability. In addition, the HBCSM aerogel exhibits excellent superhydrophobicity with the water contact angle (WCA) of 155°. The as-prepared modified HBCSM aerogel exhibits a very large absorption capacity (60–120 g g⁻¹) for different oils and organic solvents and the absorption capacity of the as-prepared aerogel shows a slight decrease after the repeated absorption and release of several oil and solvents for 9 cycles. This work provides a new procedure for fabrication of hybrid carbon aerogel with well-defined 3D hierarchical porous structures that may provide a new slight on the relationship between the structure and property of biomass carbon aerogel, making it a promising candidate for industrial oil-polluted water treatments and oil spill cleanup.

生物质碳气凝胶正在出现，因为有吸引力的多功能材料因其丰富的自然，低成本和环境友好性而在包括能量存储，吸油和催化剂在内的各个领域中具有广泛的潜在应用。在这里，我们以经济高效且环保的剑麻纤维素为主要原料，成功制备了可压缩，超疏水，多功能的生物质[电子邮件保护] ₂ @MnO ₂气凝胶（HBCSM气凝胶）。在此过程中，使用溶胶-凝胶工艺制备了[电子邮件保护的] ₂气凝胶（CS气凝胶），然后碳化形成生物质[电子邮件保护的] ₂气凝胶（BCS气凝胶）。然后，HBCSM气凝胶由在水热条件下，在BCS气凝胶表面上原位组装MnO ₂纳米片。在HBCSM气凝胶中引入SiO ₂ @MnO ₂分层结构不仅可以改善表面粗糙度和疏水性，而且可以提高吸收能力和机械耐久性。此外，HBCSM气凝胶具有出色的超疏水性，水接触角（WCA）为155°。制备后的改性HBCSM气凝胶具有非常大的吸收能力（60–120 g g ^-1）对于不同的油和有机溶剂，经过多次吸收和释放几种油和溶剂进行9个循环后，制得的气凝胶的吸收能力略有下降。这项工作为具有定义明确的3D分层多孔结构的混合碳气凝胶的制备提供了新的程序，这可能对生物质碳气凝胶的结构和性质之间的关系提供新的建议，使其成为工业油污染水的有希望的候选者处理和溢油清理。