Kumar Abhishek Saji, Akoumeh Rayane, Ramanathan Arunachalam, Park JaeWoo, Thippanna Varunkumar, Patil Dhanush, Zhu Yuxiang, Ravichandran Dharneedar, Thummalapalli Sri Vaishnavi, Sobczak M Taylor, Chambers Lindsay Bick, Theobald Taylor G, Yu Churan, Sui Chao, Yang Libin, Ponnamma Deepalekshmi, Hassan Mohammad K, Al-Ejji Maryam, Yang Sui, Song Kenan
Materials Science and Engineering, School for Engineering of Matter, Transport and Energy (SEMTE), Ira A. Fulton Schools of Engineering, Arizona State University (ASU), Tempe, Arizona 85281, United States.
Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar.
ACS Appl Mater Interfaces. 2025 Feb 5;17(5):8285-8298. doi: 10.1021/acsami.4c18528. Epub 2025 Jan 23.
This study introduces a biomimetic approach to 3D printing multilayered hierarchical porous membranes (MHMs) using Direct Ink Writing (DIW) technology. Fabricated through a fast layer-by-layer printing process with varying concentrations of pore-forming agents, the produced MHMs mimic the hierarchical pore structure and filtration capabilities of natural soil systems. As a result, the 3D-printed MHMs achieved an impressive oil rejection rate of 99.02% and demonstrated exceptional reusability, maintaining a flux recovery ratio of 99.48% even after hours of continuous filtration. Moreover, the 3D-printed MHMs exhibit superior hierarchical porous architecture and mechanical integrity compared to traditional flat sheet single-layered membranes. This study presents a significant advancement for scalable 3D printing of customized multilayer membranes with tailored porosity and high-performance filtration properties. The simplicity, versatility, and cost-effectiveness of the presented manufacturing method offer a pathway for advanced design and on-demand membrane production.
本研究介绍了一种采用直接墨水书写（DIW）技术3D打印多层分级多孔膜（MHM）的仿生方法。通过使用不同浓度的成孔剂进行快速逐层打印工艺制造而成，所生产的MHM模仿了天然土壤系统的分级孔隙结构和过滤能力。结果，3D打印的MHM实现了令人印象深刻的99.02%的拒油率，并表现出出色的可重复使用性，即使经过数小时的连续过滤，通量恢复率仍保持在99.48%。此外，与传统的平板单层膜相比，3D打印的MHM具有更优异的分级多孔结构和机械完整性。本研究为可定制孔隙率和高性能过滤特性的定制多层膜的可扩展3D打印取得了重大进展。所提出的制造方法的简单性、通用性和成本效益为先进设计和按需生产膜提供了一条途径。
