Selective glyphosate degradation via oxygen activation using Fe-N-C: Critical role of size exclusion

被引：0

作者：

Chen, Danyi ^{[1
,2
]}

Zhao, Rongrong ^{[1
,2
]}

Liu, Honglin ^{[1
,2
]}

Tian, Yiqun ^{[2
,3
]}

Deng, Cuiwen ^{[1
,2
]}

Chen, Chuncheng ^{[2
,4
]}

Liu, Xiang ^{[2
]}

Huang, Di ^{[2
]}

Huang, Yingping ^{[1
,2
]}

机构：

[1] China Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang 443002, Hubei, Peoples R China

[2] China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir Re, Minist Educ, Yichang 443002, Hubei, Peoples R China

[3] Hubei Xingfa Chem Grp Co Ltd, Yichang 443002, Peoples R China

[4] Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Res Educ Ctr Excellence Mol Sci, Key Lab Photochem,Inst Chem, Beijing 100190, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2025年 / 490卷

基金：

中国国家自然科学基金;

关键词：

Fe-N-C catalysts; Molecular oxygen activation; Glyphosate degradation; Size exclusion; Anti-interference; POROUS CARBON; DOPED CARBON; REMOVAL; PEROXYMONOSULFATE; ADSORPTION; GOETHITE; MOF;

D O I：

10.1016/j.jhazmat.2025.137810

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Selective elimination of glyphosate (PMG) from complex water matrices remains a significant challenge. Metalnitrogen-carbon (M-N-C) materials derived from metal-organic frameworks (MOFs) offer a promising platform due to their tunable porosity and abundant active sites. In this study, three Fe-N-C-x (x = 5, 10, 20) catalysts with varying pore sizes (2-4 nm) and no surface-active sites were synthesized for PMG degradation under interference with contaminants of different sizes. The results showed Fe-N-C-5 exhibited superior catalytic and antiinterference performance for PMG degradation compared to Fe-N-C-10 and Fe-N-C-20. This was attributed to the greater accessibility of smaller-sized PMG (molecular size 0.9 nm) to the internal active sites through the pore channels, while larger-sized pollutants were effectively excluded. Zeta potential measurements and in situ ATRFTIR spectroscopy revealed that the entrance of PMG was driven by both electrostatic interaction and coordination bonding between phosphate and Fe in Fe-N-C-5. Quenching experiments combined with electron spin

引用

页数：13

共 78 条

[1] Resin modified MIL-53 (Fe) MOF for improvement of photocatalytic performance [J].