催化作用
降级(电信)
电子转移
化学
激进的
化学工程
藻类
材料科学
光化学
有机化学
植物
生物
电信
计算机科学
工程类
作者
Kai Yin,Lijing Peng,Dongdong Chen,Songen Liu,Yujie Zhang,Baoyu Gao,Kang Fu,Yi Shang,Xing Xu
标识
DOI:10.1016/j.apcatb.2023.122951
摘要
Developing single-atom catalysts (SACs) with superior Fenton-like performance and low-cost via green synthesis strategy is an urgent problem. It was for the first time to prepare the iron single-atom catalyst (Fe-SAC) with highly atomically-dispersion from natural Fe-rich marine algae (Enteromorpha) with iron amount over 1.5 wt%. Iron screening test indicated that the activation performance of Enteromorpha-derived Fe-SACs catalyst was mainly based on Fe-N4-C sites, and the roles of radicals accompanying with Fe(IV) and 1O2 oxidation showed very small contributions. In contrast, the degradation of organic was dominated by the electron-transfer process (ETP), and the ETP mechanism was greatly enhanced by the iron centers in the Enteromorpha-derived Fe-SACs, which could help extract more electrons from the organics to the Fe-N4-C/PMS complex, thus facilitating the ETP in catalytic system. In addition, the commercial ceramic membrane (CM) coated with Enteromorpha-derived Fe-SACs catalyst showed superior catalytic activtiy with a stable water flux.
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