文献类型：期刊文献

英文题名：Bio-Inspired 2D Nanochannels With Adaptive Gating for Intelligent Molecular Sieving

作者：Huang, Yi[1];Yi, Ruobing[2];Qiang, Yu[3];Xie, Binyou[1];Zhang, Min[3];Liang, Shanshan[3];Chen, Junlang[1];Wang, Shuai[3,4];Chen, Liang[1,5]

机构：[1]Zhejiang A&F Univ, Coll Optomech Engn, Hangzhou 311300, Peoples R China;[2]Shandong Univ Technol, Sch Chem & Chem Engn, Zibo 255049, Peoples R China;[3]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[4]Zhejiang Univ, Shaoxing Inst, Ctr Healthcare Mat, Shaoxing 312000, Peoples R China;[5]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China

年份：2025

卷号：21

期号：13

外文期刊名：SMALL

收录：;EI(收录号：20250917956563);WOS:【SCI-EXPANDED(收录号:WOS:001432192100001)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 12004110 and 12074341), and the Fundamental Research Funds for the Central Universities. The authors thanked the staff members from BL06B beamline of Shanghai Synchrotron Radiation Facility (SSRF) for assistance during data collection.

语种：英文

外文关键词：2D nanochannel; graphene oxide membrane; molecular sieving; nanofiltration; pH-responsive

摘要：Intelligent membranes with programmable permeance and precise sieving performance are in high demand for complex water treatment scenarios. Herein, a bioinspired membrane featuring intelligent adaptive 2D nanochannels with outstanding molecule sieving performance is reported. In particular, a protein-mimetic 2D nanochannel with pH-responsive characteristics is constructed by introducing sodium alginate (SA) molecular chains into GO laminates. The conformational transformation of SA chains under varying pH conditions enables adaptive regulation of the 2D channel size and selective molecular transport. The resulting GO-SA membrane possesses outstanding water permeance up to 122.67 L m(-2) h(-1) bar(-1), along with a high sieving response factor of 50.12. Besides, it is discovered that the introduction of multivalent Ca2+ ions can stabilize the membrane structure, thereby "locking" the pH-responsive behavior. Based on this, the water treatment system is designed can not only realize the multistage separation of dye molecules, but also enable the recovery and recycling of acid and alkali. This strategy provides insights for designing intelligent membranes with gated responses.