[논문]Surface coating of MOF layers on the nanocrystals of other MOFs using nanoparticle mediated nucleation for the efficient removal of formaldehyde

Kim, Raekyung; Ryu, UnJin; Jee, Seohyeon; Choi, Kyung Min

doi:10.1016/j.apsusc.2019.144612

[해외논문] Surface coating of MOF layers on the nanocrystals of other MOFs using nanoparticle mediated nucleation for the efficient removal of formaldehyde

Applied surface science, v.505, 2020년, pp.144612 -

Kim, Raekyung (Corresponding author.) , Ryu, UnJin , Jee, Seohyeon , Choi, Kyung Min

Abstract ▼ AI-Helper

Abstract The coating of metal-organic frameworks (MOFs) has been desired to control the surrounding environment of the substrate and the pathway for the guest molecules approaching. Especially, the MOF layer coating on the other MOF nanoparticles has been challenging because of lattice mismatch and undesired homogeneous nucleation. In this report, we coated MOF layers on other nanocrystalline MOFs (nMOFs) using metal nanoparticle mediated nucleation method, and showed how this coating can be used for unique sorption behavior of H2O and efficient removal of trace formaldehyde existing in ppm level in air. Specifically, the layers of MOF-801 and UiO-66 were grown from the Pt nanoparticles attached on the particles of nUiO-66 and nMOF-801 to result final products of nMOF-801 ⊂ UiO-66 and nUiO-66 ⊂ MOF-801, respectively. We found that these samples of nUiO-66 ⊂ MOF-801 and nMOF-801 ⊂ UiO-66 present unusual H2O uptake behaviors originated from the sequence of condensation between inner and outer MOFs. These samples also captured 7 times higher amount of formaldehyde than an activated carbon and had high affinity to release less amount of formaldehyde even when its concentration outside is low. Highlights Developing MOF coating method using metal nanoparticle mediated nucleation. MOF layers were coated on other nanocrystalline MOF particles having lattice parameter mismatched. The MOF coated sample showed the unique H2O sorption behavior. The MOF layer coating on other MOF particles efficiently captured formaldehyde and didn’t release it reversely. Graphical abstract [DISPLAY OMISSION]

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[해외논문] Surface coating of MOF layers on the nanocrystals of other MOFs using nanoparticle mediated nucleation for the efficient removal of formaldehyde

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[해외논문] Surface coating of MOF layers on the nanocrystals of other MOFs using nanoparticle mediated nucleation for the efficient removal of formaldehyde

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