A core–shell Fe3O4@NH2-MIL-101(Cr) composite material for efficient removal of formaldehyde
Source abstract
Abstract
In this study, Fe3O4@NH2-MIL-101(Cr) was successfully synthesized by an in situ hydrothermal method for HCHO removal. The results revealed that NH2-MIL-101(Cr) particles were evenly dispersed on the surface of Fe3O4and had a well-defined core–shell structure of about 300 nm. When compared to pure MIL-101(Cr), Fe3O4@NH2-MIL-101(Cr) exhibited a significantly improved adsorption performance for HCHO removal, with a maximum adsorption capacity of 81.30 mg g−1. The HCHO removal rates remained above 90% after five adsorption–desorption experiments, and there was no apparent collapse or microstructure change, indicating that the Fe3O4@NH2-MIL-101(Cr) had excellent stability and recycling. The adsorption was primarily based on interactions between the amine group on the MOF and HCHO, with the N elements serving as the main active adsorbent sites for the HCHO. The results show that the amine-functionalized materials have excellent application potential in practical HCHO adsorption.Graphical abstractEffective adsorption removal of HCHO with FNM-0.2
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Research context
OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Covalent Organic Framework Applications · Industrial Gas Emission Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
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