降级(电信)
膜
激进的
过滤(数学)
陶瓷
催化作用
化学工程
材料科学
纤维
陶瓷膜
中空纤维膜
膜污染
浓差极化
催化氧化
化学
结垢
复合材料
计算机科学
工程类
有机化学
电信
统计
生物化学
数学
作者
Tao Ding,Wenxiao Zhao,Yuqing Sun,Shilong Li,Tianxiang Yu,Wenheng Jing
标识
DOI:10.1016/j.apsusc.2022.155293
摘要
In this work, a novel 2D Fe3O4-MnO2 hollow fiber ceramic membrane (HFCM) with both excellent separation performance and high catalytic activity was constructed. The Fe3O4 nanoparticles were deposited on 2D MnO2 nanoplates to increase the Mn3+ content, and then the nanoplates were pressure-driven and sintered on the surface of the hollow fiber ceramic supports to obtain 2D Fe3O4-MnO2-HFCMs. Electron spin resonance analysis confirmed that hydroxyl radicals and superoxide radicals played a major role in oxidative degradation and tetracycline hydrochloride (TCH) removal was 86.9 %. Noteworthily, TCH was concentrated on the membrane interface due to the concentration polarization effect, which increases the probability of binding free radicals from the catalytic membrane layer, thus enhancing the catalytic performance and the anti-fouling capability of the membrane. The 2D Fe3O4-MnO2-HFCM can be applied in wastewater treatment due to its superior catalytic ozonation activity and high separation performance.
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