Rapid self-heating synthesis of Fe-based nanomaterial catalyst for advanced oxidation

被引:50
作者
Yu, Fengbo [1 ]
Jia, Chao [1 ]
Wu, Xuan [1 ]
Sun, Liming [1 ]
Shi, Zhijian [1 ]
Teng, Tao [1 ]
Lin, Litao [1 ]
He, Zhelin [1 ]
Gao, Jie [1 ]
Zhang, Shicheng [1 ,2 ]
Wang, Liang [3 ]
Wang, Shaobin [4 ]
Zhu, Xiangdong [1 ,5 ]
机构
[1] Fudan Univ, Shanghai Tech Serv Platform Pollut Control & Reso, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200092, Peoples R China
[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
[3] Jiangsu Univ Sci & Technol, Sch Energy & Power, Zhenjiang 212003, Jiangsu, Peoples R China
[4] Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia
[5] Suzhou Univ Sci & Technol, Natl Local Joint Engn Lab Municipal Sewage Resour, Suzhou 215009, Peoples R China
基金
中国国家自然科学基金;
关键词
MESOPOROUS CARBON; DEGRADATION; IRON; MECHANISM; CHLORAMPHENICOL; ACTIVATION; PERSULFATE; WATER; PEROXYMONOSULFATE; NANOTUBES;
D O I
10.1038/s41467-023-40691-2
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Iron-based catalysts are promising candidates for advanced oxidation process-based wastewater remediation. However, the preparation of these materials often involves complex and energy intensive syntheses. Further, due to the inherent limitations of the preparation conditions, it is challenging to realise the full potential of the catalyst. Herein, we develop an iron-based nanomaterial catalyst via soft carbon assisted flash joule heating (FJH). FJH involves rapid temperature increase, electric shock, and cooling, the process simultaneously transforms a low-grade iron mineral (FeS) and soft carbon into an electron rich nano Fe-0/FeS heterostructure embedded in thin-bedded graphene. The process is energy efficient and consumes 34 times less energy than conventional pyrolysis. Density functional theory calculations indicate that the electron delocalization of the FJH-derived heterostructure improves its binding ability with peroxydisulfate via bidentate binuclear model, thereby enhancing (OH)-O-center dot yield for organics mineralization. The Fe-based nanomaterial catalyst exhibits strong catalytic performance over a wide pH range. Similar catalysts can be prepared using other commonly available iron precursors. Finally, we also present a strategy for continuous and automated production of the iron-based nanomaterial catalysts.
引用
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页数:10
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