Journal of the Taiwan Institute of Chemical Engineers ( IF 5.5 ) Pub Date : 2021-12-06 , DOI: 10.1016/j.jtice.2021.11.021 Yang Bai 1 , Gongzhe Nie 1 , Yi He 2 , Chao Li 3 , Xianbo Wang 1 , Liqun Ye 3
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Background
The Fenton-like reaction is a highly potential advanced oxidation process. The photo-Fenton-like reaction formed by the combination of photocatalytic advanced oxidation process, which combines their advantages, breaks the original Fenton-like reaction rate bottleneck.
Methods
In this study, an ultra-thin MOF (Cu-TCPP(BA)-MOF) with porphyrin as the ligand and copper as the metal node was synthesized via a simple one-pot method for the first time.
Significant Findings
It activates Peroxymonosulfate (PMS) under visible light to degrade 10 mg/L Rhodamine B which can be completely degraded within 40 min. The pseudo-first-order rate constant of RhB is 0.9011 min−1, being 5 folds larger than this for CuO as catalysts. ESR analysis shows that Cu-TCPP(BA)-MOF/PMS/vis system produces a large amount of non-radical 1O2. Also under visible light, with E. coli concentration of 107cfu/mL, it can be completely inactivated within 50 min. Dilution spreading plate method and Fluorescence spectroscopy confirmed the complete death of bacteria. In terms of mechanism, the ultra-thin MOF provides a large number of Cu2+ active sites. Under visible light, the cycle between Cu2+ and Cu+ is accelerated and the pathways that produce reactive oxygen species (ROS) is changed, thereby improving the performance of contaminant treatment and sterilization.
中文翻译：
Cu-MOF通过催化活化过氧单硫酸盐有效降解有机污染物和大肠杆菌灭活
背景
类芬顿反应是一种极具潜力的高级氧化过程。结合光催化高级氧化工艺形成的类类芬顿反应，结合了它们的优点，打破了原有类类芬顿反应的速率瓶颈。
方法
本研究首次通过简单的一锅法合成了一种以卟啉为配体、铜为金属节点的超薄MOF（Cu-TCPP(BA)-MOF）。
重要发现
它在可见光下激活过氧单硫酸盐 (PMS) 以降解 10 mg/L 的罗丹明 B，可在 40 分钟内完全降解。RhB 的准一级速率常数为 0.9011 min -1，比作为催化剂的 CuO 大 5 倍。ESR分析表明Cu-TCPP(BA)-MOF/PMS/vis体系产生大量非自由基1 O 2。同样在可见光下，大肠杆菌浓度为10 7 cfu/mL，50分钟内即可完全灭活。稀释扩散板法和荧光光谱证实细菌完全死亡。在机理上，超薄MOF提供了大量的Cu 2+活跃的网站。在可见光下，加速了Cu 2+和Cu +之间的循环，改变了产生活性氧（ROS）的途径，从而提高了污染物处理和杀菌的性能。
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