Reduced Magnetism in Core–Shell Magnetite@MOF Composites

Abstract

The magnetic susceptibility of synthesized magnetite (FeO) microspheres was found to decline after the growth of a metal-organic framework (MOF) shell on the magnetite core. Detailed structural analysis of the core-shell particles using scanning electron microscopy, transmission electron microscopy, atom probe tomography, andFe-Mössbauer spectroscopy suggests that the distribution of MOF precursors inside the magnetic core resulted in the oxidation of the iron oxide core.

A Cooperative Pillar–Template Strategy as a Generalized Synthetic Method for Flexible Homochiral Porous Frameworks

“…When larger PA Hs, including anthracene,p henanthrene,t riphenylene,p yrene, and perylene were used, anew type of 3D compounds named CPM-326 were obtained with the formula Co 2 (d-cam) 2 -(TPT) 1 (PAH) 1 . When larger PA Hs, including anthracene,p henanthrene,t riphenylene,p yrene, and perylene were used, anew type of 3D compounds named CPM-326 were obtained with the formula Co 2 (d-cam) 2 -(TPT) 1 (PAH) 1 .…”

“…Zuschriften aromatic hydrocarbon naphthalene,C PM-325 was obtained as a3Dcompound with the formula Co 2 (d-cam) 2 (TPT) 1 (G) 0.5 (G = styrene,p henazine,n aphthalene). When larger PA Hs, including anthracene,p henanthrene,t riphenylene,p yrene, and perylene were used, anew type of 3D compounds named CPM-326 were obtained with the formula Co 2 (d-cam) 2 -(TPT) 1 (PAH) 1 .…”

“…[1] Fundamental to all aspects of MOF research is the development of new synthetic and structural concepts to give better materials and enhanced understanding of such materials.Ingeneral, the formation of MOFs is dictated by coordinate bonds between metal ions and organic ligands. [1] Fundamental to all aspects of MOF research is the development of new synthetic and structural concepts to give better materials and enhanced understanding of such materials.Ingeneral, the formation of MOFs is dictated by coordinate bonds between metal ions and organic ligands.…”

“…Metal-organic frameworks (MOFs) have been extensively studied for av ariety of potential applications,f or example, catalysis or gas storage and separation. [1] Fundamental to all aspects of MOF research is the development of new synthetic and structural concepts to give better materials and enhanced understanding of such materials.Ingeneral, the formation of MOFs is dictated by coordinate bonds between metal ions and organic ligands. [2] However, there are also other types of interactions that often work in synergy with coordinate bonds and play ar ole in the final structure of MOFs.I nt he new materials design, it is not uncommon for researchers to focus on one interaction type and to purposefully employ it to create new materials.How to recognize and take advantage of the synergy among various types of interactions for advanced materials design remains af ascinating topic.…”

Fe3O4@MOF Magnetic Nanocomposites: Synthesis and Applications

“…[14a] Many different types of particles can be embedded in the MOFs, and the nanocomposites can be synthesized by a combination of the MOF as a shell over a magnetic core . After the growth of MOF shell on the magnetic core (Fe 3 O 4 ), we can see a decline in the magnetic value of MNPs . However, the obtained materials have more advantages in contrast to single materials which prepare easy adsorption and separation, and a facile strategy to make MOFs highly recyclable by preventing significant material loss .…”