Magnetically recyclable core–shell MOF nanoparticles of Fe₃O₄@PDA@UIO-66-NH₂ grafted by organic acids for intensified cationic dye adsorption

Abstract

Two kinds of hierarchical magnetic metal-organic framework (MOF) nanoparticles Fe3O4@PDA@UIO-66-NH-tar (mUIO-66-NH-tar) and Fe3O4@PDA@UIO-66-NH-citr (mUIO-66-NH-citr) were fabricated through post- synthetic modification. The novel nanoparticles were then characterized using SEM, FTIR, PXRD,...

Room Temperature Hydroxyl Group‐Assisted Preparation of Hydrophobicity‐Adjustable Metal‐Organic Framework UiO‐66 Composites: Towards Continuous Oil Collection and Emulsion Separation

“…P‐UiO‐66(200) has a higher weight loss because of foreign organic compounds derived from the grafted TDPA molecules on the material surfaces. Previous studies have reported a similar common phenomenon after introducing new guest organic species in MOFs [2b,15a,26] . TGA analysis results confirm the successful grafting of TDPA on UiO‐66.…”

Post-synthesis modification of metal–organic frameworks: synthesis, characteristics, and applications

“…Post-synthetic MOFs with introduced various functional groups were able to be used for adsorptions 153–155 of CO 2 , 3,118,156 H 2 , 157 SO 2 , 158 ammonia, 159,160 toxic dyes, 161–166 radioactive contaminants, 59 heavy metal ions, 5,91,167,168 and biomacromolecules. 169 Studies demonstrated that post-synthetic MOFs were promising to be applied as drinking water cleaners for water purification.…”

Facile preparation of core–shell magnetic Fe3O4@ZIF-8-PSS for organic dye adsorption

“…5 Among them, the adsorption method has attracted wide attention due to its advantages, such as simple operation, high efficiency, and environmental friendliness. [6][7][8] Zeolite-imidazolate-8 (ZIF-8), as a classical metal-organic framework (MOF) material, has the advantages of a high specific surface area, high thermal stability, and open metal sites. 9,10 Furthermore, the synthesis of ZIF-8 is simple and requires mild conditions, and it exhibits excellent adsorption performance in organic dyes.…”

“…5 Among them, the adsorption method has attracted wide attention due to its advantages, such as simple operation, high efficiency, and environmental friendliness. 6–8…”