In this study, we developed a loose nanofiltration catalytic membrane (LNCM) by incorporating nitrogen-doped carbon nanotubes (NCNT) into graphene oxide (GO) membrane (NCNT@GO-M) to activate peroxymonosulfate for efficient phosphonates degradation into phosphate, reducing phosphorus-based pollution and facilitating P recovery. The NCNT@GO-M exhibited superior permeability (76.7 L m h bar) due to its expanded pore size (1.60 nm). It integrated nanoconfinement and surface catalysis, improving the availability of surface-bound sulfate radicals for rapid Orth-P generation (k, 1.93 s), with the k being 2.4 times higher than that of the NCNT membrane catalytic system and 2626 times higher than the NCNT@GO heterogeneous catalytic system. The NCNT@GO-M also demonstrated excellent antifouling, self-cleaning, and anti-interference ability, effectively retaining humic acid with a molecular weight exceeding 3.6 kDa (∼62% removal of dissolved organic carbon), making it suitable for real-water applications. The development of LNCM shows great potential for transforming and recovery of the nutrients in wastewater.

中文翻译：

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提高催化膜的性能，同时降解溶解的有机膦酸盐和回收磷：一种适合用途的松散纳滤设计


在这项研究中，我们开发了一种松散纳滤催化膜（LNCM），将氮掺杂碳纳米管（NCNT）掺入氧化石墨烯（GO）膜（NCNT@GO-M）中，以活化过一硫酸盐，从而有效地将磷酸盐降解为磷酸盐，从而减少磷的排放。基于污染并促进磷回收。由于其扩大的孔径（1.60nm），NCNT@GO-M表现出优异的渗透性（76.7Lm h bar）。它集成了纳米约束和表面催化，提高了表面结合硫酸根的可用性，可快速生成Orth-P（k，1.93s），k比NCNT膜催化系统高2.4倍，比NCNT膜催化系统高2626倍。 NCNT@GO多相催化体系。 NCNT@GO-M还表现出优异的防污、自清洁和抗干扰能力，有效保留分子量超过3.6kDa的腐殖酸（溶解有机碳去除率约62%），使其适用于真实水体应用程序。 LNCM的发展显示出废水中营养物质转化和回收的巨大潜力。