杂原子
催化作用
合金
可重用性
化学工程
材料科学
化学
铜
冶金
有机化学
计算机科学
工程类
程序设计语言
软件
戒指(化学)
作者
Qixing Xia,Dongjie Zhang,Zhongping Yao,Zhaohua Jiang
标识
DOI:10.1016/j.apcatb.2021.120662
摘要
Fe/Cu bimetallic materials are promising Fenton-like catalysts to deal with the increasing environmental pollution. However, it remains a great challenge to prepare conveniently desirable Fe/Cu co-catalysts with brilliant catalytic efficiency and simultaneously reveal their co-catalytic mechanism. Herein, we report a facile approach of generating Fe-Cu alloys with outstanding Fenton-like catalytic performance via a straightforward electrodeposition method. The degradation ability of Fe-Cu alloy mainly comes from Fe 2+ /H 2 O 2 reaction, while the Cu components including the Cu heteroatoms in Fe lattice and the independent Cu clusters in alloy play a notable assistant role. Experiments and density functional theory (DFT) calculations indicate that the Cu heteroatoms enhance the capacity of adjacent Fe atoms for the adsorption of H 2 O 2 to generate more •OH, while the independent Cu clusters suppress the surface passivation of catalyst for improving the reusability in cycle experiments. Our study will promote the industrial application of bimetallic Fenton-like catalysts for water treatment. • Hierarchical Fe-Cu alloys were prepared by electro-deposition method. • Fe-25Cu possesses excellent catalytic activity and reusability. • The Cu components in Fe-Cu alloy are Cu heteroatoms and independent Cu clusters. • Cu heteroatoms are responsible for the catalytic activity via enhancing H 2 O 2 adsorption. • Independent Cu clusters boost the reusability via suppressing the passivation layer.
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