Temperature-modulated morphological changes in MIL-88B(Fe)-derived iron-based materials triggering generation of the peroxymonosulfate nonradical pathway to degrade carbamazepine: The key role of iron nanoparticles and CN.
Chen ZengJunli ZhengJiaxin LiuQintie LinYuxin LiuYajie WuHao LuoYang LuoPublished in: Journal of colloid and interface science (2024)
Temperature modulation of the synthesis process of MOF-derived composites is not well understood for changes in the peroxymonosulfate catalytic domain. This study synthesized a carbon-based nitrogen-doped (MN@C) MOF-derived composite catalyst derived from MIL-88B(Fe) (Materials Institute Lavoisier) by modulating temperature changes and calcination. Combined with density-functional theory calculations (DFT) analyses showed that changes in iron nanoparticles (FeNP) and CN content caused the alterations of the degradation pathways. MN@C-9 exhibited outstanding activation performance (100 % carbamazepine (CBZ) removal within 10 min). The system maintained efficient operation in different aqueous environments and a wide pH range and demonstrated efficient removal of many pollutants typical of pharmaceuticals and personal care products (PPCPs). After comprehensively analyzing the results of liquid chromatography mass spectrometry (LC-MS) and toxicity prediction, the possible degradation pathways were reasonably speculated, and the toxicity of the byproducts was greatly reduced. This study provides a potential and efficient catalyst preparation strategy for water purification.
Keyphrases
- metal organic framework
- density functional theory
- mass spectrometry
- liquid chromatography
- molecular dynamics
- room temperature
- ionic liquid
- oxidative stress
- reduced graphene oxide
- palliative care
- heavy metals
- molecular docking
- quality improvement
- risk assessment
- high performance liquid chromatography
- gold nanoparticles
- ms ms
- simultaneous determination
- molecular dynamics simulations
- transition metal