Abstract Cathode membranes can provide innovative solutions for membrane-fouling mitigation and filtration performance enhancement, in combination with electric field in a new electrochemical system. In this research, a novel polyvinylidene fluoride/stainless steel/polypyrrole (PVDF/SS/PPy) cathode membrane was prepared via in situ flow-through electro-polymerization method. The PVDF/SS/PPy membrane exhibited excellent electric catalytic activity for 2-electron ORR (oxygen reduction reaction). A battery system with PVDF/SS/PPy membrane cathode and Fe sacrificial anode was developed for in situ •OH generation. A pH range of 3.5–4.0 is preferred and the area ratio of iron anode to PVDF/SS/PPy cathode membrane was ~1:6 according to the •OH production and iron consumption results. The phenol filtration tests suggested that the PVDF/SS/PPy cathode membrane has improved selectivity for removing small refractory organic pollutant such as phenol, the removal rate increased from 54.7% to 79.3%, while flux decreased from 152 L/(m2·h) to 19 L/(m2·h). The results of filtrating river water and BSA indicated that the PVDF/SS/PPy cathode membrane had excellent anti-fouling performance when the foulants load matches the •OH production.

中文翻译：

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活性电芬顿 PVDF/SS/PPy 阴极膜可以通过过滤去除污染物，并通过与牺牲铁阳极配对来减轻污染

摘要 阴极膜与电场相结合，可在新型电化学系统中为减少膜污染和增强过滤性能提供创新解决方案。在这项研究中，通过原位流通电聚合方法制备了一种新型聚偏二氟乙烯/不锈钢/聚吡咯（PVDF/SS/PPy）阴极膜。PVDF/SS/PPy膜对2电子ORR（氧还原反应）表现出优异的电催化活性。开发了具有 PVDF/SS/PPy 膜阴极和 Fe 牺牲阳极的电池系统，用于原位生成 •OH。3.5-4.0 的 pH 值范围是优选的，根据 •OH 生产和铁消耗结果，铁阳极与 PVDF/SS/PPy 阴极膜的面积比为~1:6。苯酚过滤试验表明PVDF/SS/PPy阴极膜对苯酚等难降解有机污染物的去除选择性提高，去除率从54.7%提高到79.3%，通量从152 L/(m2·h)降低至 19 L/(m2·h)。过滤河水和BSA的结果表明，当污染物负荷与•OH产量相匹配时，PVDF/SS/PPy阴极膜具有优异的防污性能。