Abstract A novel fouling-resistant nanofiltration mixed-matrix membrane was obtained by the incorporation of 2D boron nitride nanosheets (BNNS) in polyethersulfone (PES). The addition of just 0.05 wt% of BNNS into the PES matrix led to a 4-fold increase in pure water permeance with a 10% decrease in the rejection of the dye Rose Bengal; up to 95% rejection of humic acid and nearly 100% flux recovery over two cycles in cross-flow fouling tests without the need for chemical cleansing. This performance is attributed to the uniform distribution of the BNNS in the PES matrix, observed via Raman mapping, and the surface chemistry and structure of the BNNS, which hydrophilised the polymer matrix and reduced its surface roughness. The low amount of BNNS filler needed to render the mixed-matrix membrane fouling-resistant opens the way to its use in waste-water treatment applications where organic fouling remains a major challenge.

中文翻译：

---

防污二维氮化硼纳米片 – PES 纳滤膜

摘要 通过在聚醚砜（PES）中加入二维氮化硼纳米片（BNNS），获得了一种新型耐污染纳滤混合基质膜。将 0.05 wt% 的 BNNS 添加到 PES 基质中，纯水渗透率提高了 4 倍，而对染料 Rose Bengal 的排斥降低了 10%；在横流污垢测试中，在两个循环中腐殖酸去除率高达 95%，通量恢复率接近 100%，无需化学清洗。这种性能归因于通过拉曼映射观察到的 BNNS 在 PES 基质中的均匀分布，以及 BNNS 的表面化学和结构，使聚合物基质亲水化并降低其表面粗糙度。