Functional 3D nanoporous Fe-based alloy from metallic glass for high-efficiency water splitting and wastewater treatment

被引：16
作者：
Chen, Shuang-Qin [1 ,2 ]
Li, Mai [1 ,2 ]
Ji, Qingmin [1 ,2 ]
Chen, Xiang [3 ]
Lan, Si [1 ,2 ]
Feng, Tao [1 ,2 ]
Yao, Ke-Fu [4 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing, Peoples R China
[2] Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Nanjing, Peoples R China
[3] Nanjing Univ Sci & Technol, Nano & Heterogeneous Mat Ctr, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China
[4] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2021年 / 571卷
基金：
中国国家自然科学基金;
关键词：
Fe-based nanocrystalline alloy; Dealloying; Nanoporous structure; Oxygen evolution reaction; Wastewater treatment; MAGNETIC-PROPERTIES; EVOLUTION; HYDROGEN; RIBBONS; IRON; CRYSTALLIZATION; STRENGTH; STRATEGY; BEHAVIOR; DYE;
D O I：
10.1016/j.jnoncrysol.2021.121070
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fe-based alloys with 3D nanoporous structures (np-Fe) are promising catalysts in various fields. In this study, np-Fe is easily fabricated using Fe-based metallic glass (Fe-MG) ribbons to prepare Fe-based nanocrystalline alloys as precursors after chemical dealloying in an HCl solution. The potential applications of np-Fe in energy conversion and environmental remediation are highlighted by oxygen evolution reaction (OER) and dyeing wastewater treatment of an np-Fe800-12h. The results show that np-Fe has excellent OER performance with an overpotential of 230 mV at a current density of 10 mA cm(-2). Moreover, np-Fe exhibits superior degradation capability toward azo dye pollutants and shows improved performance than even its nanocrystalline precursor and Fe-MG. This study thus paves a new avenue for fabricating the desired np-Fe as high-performance catalysts for energy conversion and wastewater treatment applications.
引用
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页数：9
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