Dual-active-site Fe/Cu single-atom nanozymes with multifunctional specific peroxidase-like properties for S^(2-)detection and dye degradation

作     者：Xiaofang Chen Ya Wang Min Feng Die Deng Xiaoyi Xie Caixia Deng Kashif Nawaz Khattak Xiupei Yang Xiaofang Chen;Ya Wang;Min Feng;Die Deng;Xiaoyi Xie;Caixia Deng;Kashif Nawaz Khattak;Xiupei Yang

作者机构：College of Chemistry and Chemical EngineeringChemical Synthesis and Pollution Control Key Laboratory of Sichuan ProvinceChina West Normal UniversityNanchong 637000China College of Environmental Science and EngineeringChina West Normal UniversityNanchong 637000China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2023年第34卷第6期

页      面：267-272页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 081705[工学-工业催化] 07[理学] 08[工学] 070205[理学-凝聚态物理] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0828[工学-农业工程] 0817[工学-化学工程与技术] 0804[工学-仪器科学与技术] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.22276150,21906129) the Natural Science Foundation of Sichuan Province of China(No.2019YJ0522) the Innovation Team of Research at China West Normal University(No.KCXTD2022–2) 

主　　题：Single-atom nanozymes Dual active sites Peroxidase-like catalyst Colorimetric detection Dye degradation 

摘      要：Designing single-atom nanozymes with densely exposed metal atom active sites and enhancing catalytic activity to detect pollutants remain a serious ***,we reported a single-atom nanozyme with layered stacked Fe/Cu dual active sites(Fe/Cu-NC SAzyme)synthesized via hydrothermal and hightemperature pyrolysis using folic acid as a *** with Fe-NC and Cu-NC SAzyme,Fe/Cu-NC SAzyme has higher peroxidase-like activity,which indicates that the doping of synthesized Fe/Cu bimetals can improve the catalytic activity and that the atomic loading of Fe and Cu in Fe/Cu-NC is 5.5 wt%and 2.27 wt%,*** S^(2-)is added to the Fe/Cu-NC catalytic system,a high-sensitivity and high-selectivity S^(2-)colorimetric sensing platform can be established,with a wide linear range(0.09-6μmol/L)and a low detection limit(30 nmol/L),which can be used to detect S^(2-)in environmental water ***’s more,the Fe/Cu-NC SAzyme can activate peroxymonosulfate(PMS)to degrade 99.9%of rhodamine B(Rh B)within 10 min with a degradation kinetics of 0.5943 min^(-1).This work details attractive applications in Fe/Cu-NC SAzyme colorimetric sensing and dye degradation.