Three-dimensional (3D) graphene aerogels (GAs) with a tunable pore structure, a highly accessible surface area, exceptional compressibility, elasticity and wettability have been explored as promising absorbents for efficient oil/water separation. However, the strategies for assembling 3D GAs usually involve a high-temperature process, resulting in high cost. We report the synthesis of a 3D porous polyoxometalate (POM)-hybridized GA (POM-GA) as a highly efficient and recyclable absorbent for oil/water separation. The material was fabricated at room temperature by the self-assembly and reduction of graphene oxide using POM as a functional cross-linker and hydrazine hydrate as a reductant. It had a 3D interconnected macroporous structure, a large specific surface area, exceptional compressibility, elasticity and wettability, displayedexcellent absorption capacities of 100-210 g g⁻¹ for the rapid removal of various organic pollutants from water, outperforming most of the previously reported graphene-based macro-assemblies synthesized at high temperatures. Moreover, the absorbed oils can be readily removed by squeezing or first squeezing and then burning the remaining organic from the 3D POM-GA. The oil-absorption capacity retention rates of the 3D POM-GA are 96% and 90% after 10 absorbing-squeezing and absorbing-squeezing-burning cycles, respectively. The material therefore has great potential for efficient oil/water separation with wide applicability and excellent durability.

具有可调节的孔结构，高度可及的表面积，出色的可压缩性，弹性和可湿性的三维（3D）石墨烯气凝胶（GAs）已被探索为有效油/水分离的有前途的吸收剂。但是，组装3D GA的策略通常涉及高温工艺，从而导致高成本。我们报告了3D多孔多金属氧酸盐（POM）-杂交GA（POM-GA）的合成，作为油/水分离的高效和可回收吸收剂。该材料是在室温下通过自组装和氧化石墨烯（使用POM作为功能性交联剂，并使用水合肼作为还原剂）制备的。它具有3D互连的大孔结构，较大的比表面积，出色的可压缩性，弹性和润湿性，^-1用于从水中快速去除各种有机污染物，其性能优于先前报道的大多数在高温下合成的基于石墨烯的宏组件。此外，通过挤压或先挤压然后燃烧掉3D POM-GA中剩余的有机物，可以轻松去除吸收的油。经过10个吸收挤压和燃烧吸收燃烧循环后，3D POM-GA的吸油量保持率分别为96％和90％。因此，该材料具有高效的油/水分离潜力，具有广泛的适用性和出色的耐久性。