Iron single-atom/clusters catalysts derived from iron-rich Enteromorpha after urea-saturation for Fenton-like reaction  

作　　者：Yujie Zhang Siyi Liu Dongdong Chen Xing Xu 

机构地区：[1]School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China

出　　处：《Chinese Chemical Letters》2024年第3期149-152,共4页中国化学快报（英文版）

基　　金：supported by National Natural Science Foundation of China(No.52170086);Shandong Provincial Excellent Youth(No.ZR2022YQ47)。

摘　　要：Fabrication of single atom catalysts(SACs)by a green and gentle method is important for their practical 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 fabricated 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 k_(obs)of 0.282 min^(-1).Quenching tests indicated 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 FeSACs/clusters/PMS^*complexes as electron acceptor.This result was consistent with the phenomenon observed 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.

关 键 词：SACs IRON CLUSTERS Fenton-like reaction ENTEROMORPHA 

分 类 号：TQ426[化学工程]