Construction of ultra-stable and Z-scheme Fe-Graphdiyne/MIL-100(Fe) photo-Fenton catalyst with C = C-Fe|O interface for the highly enhanced catalytic degradation of Dinotefuran

被引:51
作者
Zhang, Zhengsheng [1 ]
Muhammad, Yaseen [2 ]
Chen, Yanhuang [3 ]
Shah, Syed Jalil [1 ]
Peng, Yi [1 ]
Shao, Shan [1 ]
Wang, Ruimeng [1 ]
Li, Xuesheng [1 ]
Liu, Huibiao [3 ]
Zhao, Zhongxing [1 ]
机构
[1] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Agroenvironm & Agroprod Safety, Nanning 530004, Peoples R China
[2] Univ Peshawar, Inst Chem Sci, Peshawar 25120, KP, Pakistan
[3] Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
Graphdiyne; Dinotefuran degradation; Photo-corrosion resistance; C=C-Fe; O interface; Z-scheme Fe-GDY(3)@MIL(Fe) catalyst; METAL-ORGANIC FRAMEWORKS; VISIBLE-LIGHT; PHOTOCATALYTIC DEGRADATION; HYDROGEN-PRODUCTION; WASTE-WATER; GRAPHDIYNE; MIL-100(FE); OXIDATION; THIAMETHOXAM; PERFORMANCE;
D O I
10.1016/j.cej.2021.131621
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
High photo-Fenton catalytic activity and stable recycling performance are the main challenges for Fe-based metal-organic frameworks in practical applications of pesticide degradation. Herein, graphdiyne (GDY) with a unique sp/sp2 pi-conjugated structure was proposed to composite with MIL-100(Fe) to form the Z-scheme photocatalyst Fe-GDY3@MIL(Fe) for dinotefuran (DTF) degradation. A unique C = C-Fe|O interface was established between Fe-GDY and Fe-MOF owing to the confinement of GDY for anchoring Fe. Fe-GDY3@MIL(Fe) composite having tight C = C-Fe|O interface exhibited the highly conductive Z-scheme structure and dispersed Fe sites, which can efficiently enhance redox ability and accelerate Fe(III)/Fe(II) conversion cycle. Therefore, FeGDY3@MIL(Fe) showed 7-80 times of degradation kinetics and 2-5 times of mineralization kinetics compared to the state-of-the-art catalysts under relatively same conditions. Moreover, fast charge separation promoted the chemical stability and photo-corrosion resistance of MIL-100(Fe), which significantly enhanced catalytic stability and life-time.
引用
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页数:16
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