首页|Iron single-atom/clusters catalysts derived from iron-rich Enteromorpha after urea-saturation for Fenton-like reaction
Iron single-atom/clusters catalysts derived from iron-rich Enteromorpha after urea-saturation for Fenton-like reaction
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Fabrication of single atom catalysts(SACs)by a green and gentle method is important for their practi-cal Fenton-like use.In this work,a high effective iron-based catalyst was prepared from the iron-rich Enteromorpha for NPX degradation via peroxymonosulfate(PMS).Both Fe-SACs and iron-clusters was fab-ricated from the intrinsic iron element in Enteromorpha after the urea saturation.The Fe-SACs/clusters can achieve 100％of NPX oxidation within 20 min with the kobs of 0.282 min-1.Quenching tests indi-cated that the radical pathways were not dominated in the catalytic systems,and strong electron transfer process can be induced in the Fe-SACs/clusters+PMS system by using the NPX as electron donor and Fe-SACs/clusters/PMS'complexes as electron acceptor.This result was consistent with the phenomenon ob-served in the galvanic oxidation system.In addition,the Fe-SACs/clusters was deposited onto the ceramic membrane(CM)by the spraying-crosslinking process to form a Fe-SACs/clusters@CM,which showed an effective and continuous NPX degradation in a heterogeneous PMS system.
SACsIronClustersFenton-like reactionEnteromorpha
Yujie Zhang、Siyi Liu、Dongdong Chen、Xing Xu
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School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China
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