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Degradation of phenol using a peroxidase mimetic catalyst through conjugating deuterohemin-peptide onto metal-organic framework with enhanced catalytic activity
Catalysis Communications ( IF 3.7 ) Pub Date : 2019-10-24 , DOI: 10.1016/j.catcom.2019.105859
Yi Ding , Zhiying Li , Wei Jiang , Bolei Yuan , Tingting Huang , Liping Wang , Jun Tang

Deuterohemin-β-Ala-His-Thr-Val-Glu-Lys (DhHP-6), a novel Deuterohemin-containing peptide mimetic of natural microperoxidase-11 (MP-11), was successfully immobilized onto NH2-UIO-66 (ZrMOF) by precipitation and cross-linking strategy to obtain a peroxidase mimetic, DhHP-6-c-ZrMOF. The synergy between components offers DhHP-6-c-ZrMOF excellent kinetics performance, peroxidase activity, pH stability, and phenol degradation capacity. Up to 98.0% of phenol could be degraded in 120 min when utilizing DhHP-6-c-ZrMOF as heterogeneous Fenton catalyst. Notably, DhHP-6-c-ZrMOF delivered outstanding recoverability with an 80.2% degradation ratio of phenol after four recycles. The efficient peroxidase mimetic can potentially be used as a promising catalyst for the high-efficiency degradation of phenol pollutants.



中文翻译:

使用过氧化物酶模拟催化剂通过将氘铁血红素肽缀合到具有增强催化活性的金属有机骨架上来降解苯酚

一种新型的天然微过氧化物酶11(MP-11)含氘核糖蛋白的模拟肽Deuterohemin-β-Ala-His-Thr-Val-Glu-Lys(DhHP-6)成功地固定在NH 2 -UIO-66( ZrMOF)通过沉淀和交联策略获得过氧化物酶模拟物DhHP-6- c - ZrMOF。组分之间的协同作用为DhHP-6- c - ZrMOF提供了出色的动力学性能,过氧化物酶活性,pH稳定性和苯酚降解能力。当使用DhHP-6- c -ZrMOF作为非均相Fenton催化剂时,在120分钟内可降解高达98.0%的苯酚。值得注意的是,DhHP-6- c-四次循环后,ZrMOF具有出色的可回收性,苯酚的降解率为80.2%。高效的过氧化物酶模拟物可以潜在地用作高效降解苯酚污染物的有前途的催化剂。

更新日期:2019-10-25
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