A recyclable magnetic bifunctional biochar photocatalyst material (FZLB) comprising of FeO/ZnO/ Lufa-biochar was developed for the efficient degradation of phenols found in mechanical wastewater. The use of filamentous biochar not only provided abundant open active sites essential for the photocatalytic reaction, but also facilitated mass transfer, amplified the charge transfer rate and reduced the complexation of photogenerated electron-hole pairs. Of the catalysts tested, the 20 % FZLB catalyst demonstrated the greatest photocatalytic activity, achieving 96.5 % phenol degradation following 90 min of visible light exposure alone. Notably, the material could be quickly retrieved in 90 s, making it highly efficient for use in managing mechanical wastewater when visible light is present. The 20 % FZLB catalyst's notable photocatalytic activity highlights its potential as a viable solution for effective mechanical wastewater management under visible light conditions.

中文翻译：

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一种新型可回收的 Fe3O4/ZnO/丝瓜生物炭复合材料，可在可见光下有效降解有机污染物

开发了一种由 FeO/ZnO/Lufa-生物炭组成的可回收磁性双功能生物炭光催化剂材料 (FZLB)，用于有效降解机械废水中的酚类物质。丝状生物炭的使用不仅为光催化反应提供了丰富的开放活性位点，而且还促进了传质，放大了电荷转移速率并减少了光生电子-空穴对的络合。在测试的催化剂中，20% FZLB 催化剂表现出最大的光催化活性，仅在可见光照射 90 分钟后即可实现 96.5% 的苯酚降解。值得注意的是，该材料可以在 90 秒内快速回收，使其在可见光存在时能够高效地用于管理机械废水。20% FZLB 催化剂显着的光催化活性凸显了其作为可见光条件下有效机械废水管理的可行解决方案的潜力。