Heterojunction of Pores in Granola‐Type Crystals of Two Different Metal–Organic Frameworks for Enhanced Formaldehyde Removal

Abstract

Metal-organic frameworks (MOFs) have introduced heterogeneity in their homogeneous matrix to create new functions that cannot be realized by each MOF individually. In this study, we chemically combined two different MOFs (UiO-66 and HKUST-1) in granola-type granules (termed as HKUST-1^UiO-66) to create a heterojunction of pores in nanocrystalline particles. The structure, morphology, elemental composition, and pore environment were characterized to confirm that two types of pores are in conjunction all over the HKUST-1^UiO-66 granules. We found that the HKUST-1^UiO-66 granules showed an enhanced CO 2 sorption capacity than its constituents due to the complexity and the heterojunction of pores inside. Moreover, the HKUST-1^UiO-66 granules present four and two times higher formaldehyde removal capacity than those of the HKUST-1 and UiO-66 samples, respectively.

Dynamic weak coordination bonding of chlorocarbons enhances the catalytic performance of a metal–organic framework material

“…An attractive system for this study is metal–organic frameworks (MOFs), a crystalline subset of porous materials comprised of metal ions and multitopic organic linkers. Owing to the presence of permanent porosity and OMSs (in many cases), most MOFs have demonstrated salient features, playing critical roles in different applications such as drug delivery, 13–15 electronics, 16–19 ionic conduction, 20–25 chemical sensing, 26–28 molecular separation, 29–37 gas absorption, 35–47 and in particular, catalytic reactions. 47–58…”

Homogenous Microporous Thin Films Assembled Using Discrete Metal-Organic Polyhedra

“…The closed-loop system consisted of a large gas mixing chamber connected to both a sample chamber and a gas detector (1512i photoacoustic gas monitor, LumaSense Technology). [34,35] When the target formaldehyde concentration was reached in the gas mixing chamber using a gas control system, the formaldehyde was subsequently directed through the sample chamber. The adsorption abilities of the MOP and MOP-NU powder samples are compared in Figure 5a .…”

Magnetite Metal–Organic Frameworks: Applications in Environmental Remediation of Heavy Metals, Organic Contaminants, and Other Pollutants

“…The comparative analysis can be appraised from the earlier studies performed to absorb assorted pollutants (Table ). − Functionalization and modification of nanostructured materials are typically accompanied by an increase in activity, efficiency, and selectivity. − …”