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Removal of antibiotic tetracycline by metal-organic framework MIL-101(Cr) loaded nano zero-valent iron.
- Source :
-
Journal of Molecular Liquids . Sep2020, Vol. 313, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Nano zero-valent iron (nZVI) is a highly reactive particle but easily to be aggregated. Porous materials support can improve the stability of nZVI. Materials of Institute Lavoisier Frameworks (MILs), a type of metal-organic frameworks (MOFs), have enormous surface areas, ultrahigh porosity, and good water stability. The combination between MILs and nZVI can provide an intensively "capture & destroy" effect to micro-pollutants in water. In this study, a novel composite, nZVI modified MIL-101(Cr), was prepared, characterized, and applied for tetracycline (TC) adsorption and degradation. The surface morphology and micropore structure of nZVI/MIL-101(Cr) were characterized. The TC adsorption performance of the composite was investigated via various parameters, adsorption kinetics, isotherms, and thermodynamics. Results showed that the TC adsorption followed pseudo-second-order kinetic equation and the maximum adsorption quantity (q m) was 625.0 mg/g. The catalytic property of nZVI/MIL-101(Cr) was also investigated via heterogeneous Fenton-like process, and nZVI/MIL-101(Cr) showed 90% TC removal efficiency in a wide pH range. Moreover, nZVI/MIL-101(Cr) displayed good stability and reusability. The developed composite is a potential adsorbent and heterogeneous catalyst for antibiotics pollution control in water. Unlabelled Image • A novel composite was synthesized by impregnating nano zero-valent iron to MOF. • NZVI/MIL-101(Cr) was used as an adsorbent and heterogeneous catalyst to remove TC. • The maximum TC adsorption capacity was 625.0 mg/g for nZVI/MIL-101(Cr). • NZVI/MIL-101(Cr) exhibited higher catalytic activity for TC degradation. • NZVI/MIL-101(Cr) displayed high stability and reusability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01677322
- Volume :
- 313
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Liquids
- Publication Type :
- Academic Journal
- Accession number :
- 145135459
- Full Text :
- https://doi.org/10.1016/j.molliq.2020.113512