Liang Hui, Li Ruijuan, Liu Tongjin, Li Rumei, Zhu Yuxiao, Fang Feng
Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
Shandong Key Laboratory for Green Prevention and Control of Agricultural Pests, Jinan 250100, China.
Molecules. 2024 Nov 24;29(23):5545. doi: 10.3390/molecules29235545.
Peroxymonosulfate (PMS)-based advanced oxidation processes have shown potential for the removal of organic contaminants; however, the preparation of catalysts with high degradation efficiencies and rapid reaction rates remains a challenge. In this study, we have successfully synthesized CoFe bimetallic modified corn cob-derived biochar (CoFe/BC) for the activation of PMS, achieving the rapid and efficient degradation of bisphenol F (BPF). The synthesized CoFe/BC catalyst demonstrated excellent catalytic performance, achieving over 99% removal within 3 min and exhibiting a removal rate of 90.0% after five cycles. This could be attributed to the cyclic transformation of Co and Fe, which sustained rapid PMS activation for BPF degradation, and Co/Fe played a significant role in the cyclic transformation. Furthermore, the electron paramagnetic resonance tests confirmed that •SO and •OH were the primary reactive oxygen species, while •O played a minor role in BPF degradation. This study highlights the high degradation efficiency, rapid reaction rate, excellent magnetic separation properties, and exceptional reusability of CoFe/BC catalysts for BPF removal, providing valuable insights for practical wastewater treatment.
基于过一硫酸盐（PMS）的高级氧化工艺已显示出去除有机污染物的潜力；然而，制备具有高降解效率和快速反应速率的催化剂仍然是一项挑战。在本研究中，我们成功合成了用于活化PMS的钴铁双金属改性玉米芯衍生生物炭（CoFe/BC），实现了双酚F（BPF）的快速高效降解。合成的CoFe/BC催化剂表现出优异的催化性能，在3分钟内去除率超过99%，经过五个循环后去除率为90.0%。这可归因于Co和Fe的循环转化，其维持了BPF降解的快速PMS活化，且Co/Fe在循环转化中起重要作用。此外，电子顺磁共振测试证实，•SO和•OH是主要的活性氧物种，而•O在BPF降解中起次要作用。本研究突出了CoFe/BC催化剂在去除BPF方面的高降解效率、快速反应速率、优异的磁分离性能和出色的可重复使用性，为实际废水处理提供了有价值的见解。
