Facing millions of tons of discharged oily wastewater each year worldwide, it is highly desired to develop eco-friendly, cost-effective and high-efficiency oil/water separation technology with antifouling performance. Herein, three-dimensional (3D) printing technology is applied to develop an eco-friendly acrylonitrile-butadiene-styrene (ABS) membrane that is modified by an eco-friendly plasma strategy without chemical consumption. The modified membrane demonstrates excellent hydrophilicity and oleophobicity, with a water contact angle of 8.8° and underwater oil contact angle of 137.6°. Only driven by tiny gravitation force, the modified membrane exhibits an ultra-high flux of 1.17 × 10⁵ L·m^-2·h^-1 with 99.60% rejection for five typical oil/water systems. The rejection maintains 99.40% after 100 cycling tests during a four-month period, demonstrating superior stability and recyclability of the membrane. To our knowledge, this membrane largely outperforms all the state-of-the-art membranes for oil/water separation. In particular, the electron transfer of liquid and solid (L-S) surface during the contact electrification (CE) process is firstly introduced to interpret the membrane separation process. This work opens an avenue to fabricate appealing performance membranes for oil/water separation.

面对全球每年排放的数百万吨含油废水，迫切需要开发环保、经济、高效且具有防污性能的油水分离技术。在此，应用三维 (3D) 打印技术开发一种环保型丙烯腈-丁二烯-苯乙烯 (ABS) 膜，该膜通过环保型等离子体策略进行改性，无需消耗化学品。改性膜表现出优异的亲水性和疏油性，水接触角为8.8°，水下油接触角为137.6°。^{仅在微小重力驱动下，改性膜表现出1.17×10 5} L·m ^-2 ·h ^-1的超高通量五种典型的油/水系统的截留率为 99.60%。经过四个月的 100 次循环测试后，拒绝率保持在 99.40%，证明了膜的卓越稳定性和可回收性。据我们所知，这种膜在很大程度上优于所有最先进的油/水分离膜。特别是，首次引入接触带电 (CE) 过程中液体和固体 (LS) 表面的电子转移来解释膜分离过程。这项工作为制造具有吸引力的油水分离性能膜开辟了一条途径。