Surface functionalization of zinc oxide (ZnO) nanoparticles was performed by glycidyl POSS. The synthesized nanoparticles were applied to prepare polyether-imide based-nanofiltration membranes by phase inversion method. The characterizations were done by FESEM, EDX and AFM analysis. The effect of different concentrations of POSS-ZnO (PZ) nanoparticles was investigated to evaluate the separation performance of prepared membranes by contact angle measurement, pure water flux (PWF), rejection of aqueous solutions including Na 2 SO 4 , Pb(NO 3 ) 2 , Cu(NO 3 ) 2 and flux recovery ratio (FRR%). The prepared PEI/PZ membranes showed significant separation performance and antifouling properties compared with neat PEI and PEI/ZnO membranes. The highest pure water flux (42.4 L/m 2 h) was revealed for M1-PZ in 0.001 wt% of PZ nanoparticles, whereas that was 17 (L/m 2 h) for neat membrane and 12–18 (L/m 2 h) for PEI/ZnO, respectively. Also, salt rejection was low for blended PEI/ZnO membranes. By incorporation of PZ into the PEI, Na 2 SO 4 , and Pb (NO 3 ) 2 rejection improved to 83% and 59%, respectively. Moreover, the M3-PZ showed the best separation performance for Cu (NO 3 ) 2 with the rejection of 67%. The highest antifouling properties were obtained for M4-PZ with FRR% of 59%, which is significant compared with 15% for PEI/ZnO and 30% for neat PEI membranes.

中文翻译：

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缩水甘油POSS功能化ZnO纳米颗粒结合聚醚酰亚胺基纳滤膜去除水中重金属离子

氧化锌 (ZnO) 纳米粒子的表面功能化是通过缩水甘油 POSS 进行的。应用合成的纳米粒子通过相转化法制备聚醚-酰亚胺基纳米过滤膜。通过FESEM、EDX和AFM分析完成表征。研究了不同浓度的 POSS-ZnO (PZ) 纳米粒子的影响，通过接触角测量、纯水通量 (PWF)、包括 Na 2 SO 4 、Pb(NO 3 ) 水溶液的截留来评估所制备膜的分离性能2、Cu(NO 3 ) 2 和焊剂回收率(FRR%)。与纯 PEI 和 PEI/ZnO 膜相比，制备的 PEI/PZ 膜显示出显着的分离性能和防污性能。M1-PZ 在 0.001 wt% 的 PZ 纳米颗粒中显示出最高的纯水通量 (42.4 L/m 2 h)，而对于纯膜，这分别为 17 (L/m 2 h)，对于 PEI/ZnO，分别为 12–18 (L/m 2 h)。此外，PEI/ZnO 混合膜的脱盐率很低。通过在 PEI 中加入 PZ，Na 2 SO 4 和 Pb (NO 3 ) 2 的去除率分别提高到 83% 和 59%。此外，M3-PZ 对Cu (NO 3 ) 2 表现出最好的分离性能，去除率为67%。M4-PZ 获得了最高的防污性能，FRR% 为 59%，与 PEI/ZnO 的 15% 和纯 PEI 膜的 30% 相比，这是显着的。M3-PZ 对Cu (NO 3 ) 2 表现出最好的分离性能，去除率为67%。M4-PZ 获得了最高的防污性能，FRR% 为 59%，与 PEI/ZnO 的 15% 和纯 PEI 膜的 30% 相比，这是显着的。M3-PZ 对Cu (NO 3 ) 2 表现出最好的分离性能，去除率为67%。M4-PZ 获得了最高的防污性能，FRR% 为 59%，与 PEI/ZnO 的 15% 和纯 PEI 膜的 30% 相比，这是显着的。