Abstract Removal of oil from water through absorbent materials such as graphene proves to be an excellent technique due to its simplicity and recoverability. However, there are several issues encountered such as poor structural integrity and complexity of the fabrication process. In this study, the hollow three-dimensional graphene (H3DG) grown using chemical vapor deposition technique is strengthened by infusing poly(methyl methacrylate) (PMMA) for structural robustness and better recovery process. The overall porous nature of the H3TG and the gaps created within the graphene layers after the nickel etching provides an excellent absorption capacity of up to 48.132 g g−1. Besides, the polymeric reinforcement gives additional flexibility and improved mechanical properties such as reduced elastic modulus and ultimate tensile strength at 452.41 MPa and 19.05 kPa, respectively, as compared to the standalone H3TG. The presence of PMMA is also advantageous as the absorbed oil is recoverable by compression and reused with only 3.616% reduction in oil absorption performance after 10 cycles. Graphical Abstract

中文翻译：

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用聚（甲基丙烯酸甲酯）增强的空心三维石墨烯用于选择性吸油

摘要 通过石墨烯等吸附材料去除水中的油，由于其简单性和可回收性，被证明是一项出色的技术。然而，存在一些问题，例如结构完整性差和制造过程的复杂性。在这项研究中，通过注入聚（甲基丙烯酸甲酯）（PMMA）来增强使用化学气相沉积技术生长的中空三维石墨烯（H3DG），以获得结构稳健性和更好的恢复过程。H3TG 的整体多孔性质和镍蚀刻后石墨烯层内产生的间隙提供了高达 48.132 gg-1 的出色吸收能力。此外，聚合物增强材料提供额外的柔韧性和改进的机械性能，例如降低的弹性模量和 452 的极限拉伸强度。与独立的 H3TG 相比，分别为 41 MPa 和 19.05 kPa。PMMA 的存在也是有利的，因为吸收的油可通过压缩回收并重复使用，10 次循环后吸油性能仅降低 3.616%。图形概要