Abstract A novel ordered cubic mesostructured phenolic resin (PR)/F127 desalting membrane was fabricated by a spin-coating approach via the self-assembly of PR oligomer and Pluronic F127 triblock copolymer template on a polyacrylonitrile (PAN) ultrafiltration substrate. It has a thin PR/F127 desalting active layer (30 nm) and negatively charged membrane surface, and It can reject 83.7% potassium sulphate under 2 g/L feed solution and 2.4 MPa operating pressure. The rejection to potassium citrate can be elevated to 95.6%, and corresponding permeate flux is 11.0 L/m2 h, suggesting good separation capability to multivalent-anion salts. Moreover, it was found that this membrane has a good selective passage for non-charged organic species. Additionally, after the membrane was partially carbonized by adding sulphuric acid, the permeate flux can be dramatically improved to 35.9 L/m2h with a slight potassium citrate rejection decrease (85.4%). Furthermore, the potassium citrate rejection of the membrane can be still kept at a high level (91.7%) after being treated for 6 h in NaClO aqueous solution (pH 4), indicating excellent chlorine resistance performance. This membrane also shows good resistance to acid and alkaline solutions (pH 3–9). The negatively charged membrane surface and F127 templated dense mesostructure play a key role for improving the separation capability of the PR/F127 membrane. This membrane material should have a good application prospect in multi-component separation and reclamation of oxidative waste water.

中文翻译：

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具有有序细观结构和优异耐氯性的酚醛树脂基脱盐膜的制备

摘要 以PR低聚物和Pluronic F127三嵌段共聚物模板自组装在聚丙烯腈(PAN)超滤基材上，采用旋涂法制备了一种新型有序立方介孔结构酚醛树脂(PR)/F127脱盐膜。它具有薄的 PR/F127 脱盐活性层 (30 nm) 和带负电荷的膜表面，在 2 g/L 进料溶液和 2.4 MPa 操作压力下，它可以去除 83.7% 的硫酸钾。对柠檬酸钾的截留率可提高到 95.6%，相应的渗透通量为 11.0 L/m2 h，表明对多价阴离子盐具有良好的分离能力。此外，发现该膜对不带电的有机物质具有良好的选择性通过。此外，在膜通过加入硫酸部分碳化后，渗透通量可显着提高至 35.9 L/m2h，柠檬酸钾截留率略有下降 (85.4%)。此外，该膜在 NaClO 水溶液（pH 4）中处理 6 小时后，其柠檬酸钾截留率仍可保持在较高水平（91.7%），表明其具有优异的耐氯性能。该膜还显示出对酸和碱溶液（pH 3-9）的良好耐受性。带负电荷的膜表面和 F127 模板化的致密介孔结构对于提高 PR/F127 膜的分离能力起着关键作用。该膜材料在氧化废水的多组分分离和回收方面具有良好的应用前景。在NaClO水溶液（pH 4）中处理6小时后，膜的柠檬酸钾截留率仍可保持在较高水平（91.7%），表明其具有优异的耐氯性能。该膜还显示出对酸和碱溶液（pH 3-9）的良好耐受性。带负电荷的膜表面和 F127 模板化的致密介孔结构对于提高 PR/F127 膜的分离能力起着关键作用。该膜材料在氧化废水的多组分分离和回收方面具有良好的应用前景。在NaClO水溶液（pH 4）中处理6小时后，膜的柠檬酸钾截留率仍可保持在较高水平（91.7%），表明其具有优异的耐氯性能。该膜还显示出对酸和碱溶液（pH 3-9）的良好耐受性。带负电荷的膜表面和 F127 模板化的致密介孔结构对于提高 PR/F127 膜的分离能力起着关键作用。该膜材料在氧化废水的多组分分离和回收方面具有良好的应用前景。带负电荷的膜表面和 F127 模板化的致密介孔结构对于提高 PR/F127 膜的分离能力起着关键作用。该膜材料在氧化废水的多组分分离和回收方面具有良好的应用前景。带负电荷的膜表面和 F127 模板化的致密介孔结构对于提高 PR/F127 膜的分离能力起着关键作用。该膜材料在氧化废水的多组分分离和回收方面具有良好的应用前景。