The aqueous system is being polluted by the untreated direct discharge of industrial oily wastewater into the ecosystem. Due to its low cost, energy economy, and sustainability, the advanced membrane filtration method is regarded as one of the best methods for treating oily wastewater. Its exceptional atomic thickness and superior amphiphilic properties of graphene oxide (GO) nanosheet make it one of the finest 2D constituents for creating membranes with high permeability. Nevertheless, the interlayer d-spacing of multi-stacked GO membranes is crucial since it is responsible for the permeability/selectivity trade-off. To efficiently separate oil-in-water emulsion using an in-situ polymerization technique, we developed an aquaporin-like 3D hierarchical multi-functionalized nanoporous graphene (NPG) membrane with tripartite nanochannels. The extraordinary, prepared membrane displayed both ultra-water-permeability of 2490 L m⁻² h⁻¹.bar along with superior selectivity. Consequently, the permeance of the aquaporin-like 3D hierarchical multi-functionalized NPG membrane achieves a higher flux than the GO membrane, while the oil rejection reaches ~97%.

未经处理的工业含油废水直接排放到生态系统中，水系统受到污染。由于其成本低、能源经济且可持续，先进的膜过滤方法被认为是处理含油废水的最佳方法之一。氧化石墨烯 (GO) 纳米片具有非凡的原子厚度和卓越的两亲特性，使其成为用于制造高渗透性膜的最佳二维成分之一。然而，多层GO膜的层间d间距至关重要，因为它决定了渗透性/选择性的权衡。为了利用原位聚合技术有效分离水包油乳液，我们开发了一种具有三部分纳米通道的类水通道蛋白3D分层多功能纳米多孔石墨烯（NPG）膜。这种非凡的制备膜具有 2490 L m ^-2 h ^-1 .bar的超透水性以及卓越的选择性。因此，类水通道蛋白3D分级多功能NPG膜的渗透性实现了比GO膜更高的通量，同时油截留率达到~97%。