H2S interaction with HKUST-1 and ZIF-8 MOFs: A multitechnique study

Ethiraj, Jayashree; Bonino, Francesca; Lamberti, Carlo; Bordiga, Silvia

doi:10.1016/j.micromeso.2014.12.034

Cited by 99 publications

(96 citation statements)

References 30 publications

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“…The sod and dia topologies show the typical Raman fingerprint of sod. 52,53 For both sod and dia, the main bands are assigned to methyl bending (1459 cm -1 ), C5-N stretching (1147 cm -1 ), imidazole ring puckering (690 cm -1 ) and Zn-N stretching -H2O (d) and from TD-EtOH (f)) and ZIF-C (e, from TD-H2O) phases. ZIF-C refers to ZIF-CO3-1.…”

Section: Resultsmentioning

confidence: 99%

Phase Dependent Encapsulation and Release Profile of ZIF-Based Biocomposites

Carraro¹,

Velasquez²,

Astria³

et al. 2019

Preprint

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Here we systematically varied the composition of the relative amounts of ligand (2-methylimidazole), metal precursor (Zn(OAc)2∙2H2O, and protein to prepare a series of protein@ZIF biocomposites. The effect of post synthetic treatments (i.e. washes with water or water/ethanol) was investigated. The XRD data of the examined samples were used to construct ternary diagrams. Five different phases were identified. The encapsulation efficiency (of bovine serum albumin and insulin) were phase dependent.

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Section: Resultsmentioning

confidence: 99%

Phase Dependent Encapsulation and Release Profile of ZIF-Based Biocomposites

Carraro¹,

Velasquez²,

Astria³

et al. 2019

Preprint

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“…37 The existence of O-H bending and stretching modes conrms that the starting sample contained a large amount of water. The IR modes associated with Cu lie below 600 cm À1 , 36 which are out of the detectable range of the IR system.…”

Section: Characterization Of Cu-btc At Ambient Pressurementioning

confidence: 92%

“…The two bands at 730 cm À1 and 758 cm À1 are the out-of-plane C-H bending modes, while the band at 1113 cm À1 represents the in-plane C-H bending mode, all of which are associated with the aromatic ring of the BTC. 35,36 The second region is from 1150 cm À1 to 1700 cm À1 , in which the characteristic bands associated with the carboxylate groups of the BTC ligand are detected. The weak peaks at 1191 cm À1 and 1274 cm À1 are attributed to the C-O stretching modes.…”

Section: Characterization Of Cu-btc At Ambient Pressurementioning

confidence: 99%

High pressure effects on hydrate Cu-BTC investigated by vibrational spectroscopy and synchrotron X-ray diffraction

Zeng

Shi

et al. 2017

RSC Adv.

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The high pressure behaviors of hydrate Cu-BTC metal-organic framework (MOF) in terms of phase stability, compressibility and reversibility were investigated in situ by synchrotron X-ray powder diffraction as well as vibrational spectroscopy. Two phase transitions, caused by the interaction of water and the sample framework, were revealed by the vibrational spectroscopies. Compressibility of the hydrate Cu-BTC also displays soft and hard regimes, which is the same scenario as non-hydrate Cu-BTC with a pressure transmitting medium. It is further confirmed that the residual water molecules in hydrate Cu-BTC can serve as a pressure transmitting medium with small molecule size under high pressure. Our results not only prove the high stability of Cu-BTC but also provide spectroscopic evidence for the interactions taking place between the guest molecules and the sample framework. Such findings could provide further guidelines for improving Cu-BTC's absorption and storage abilities.

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“…Densified MIL-53 with flexible organic linkers has mostly utilized for CO 2 /CH 4 separation, which showed higher CH 4 /CO 2 separation factors [39,[58][59][60] compared with MOF powders. To this end, ZIF-8 pellets and monoliths have also been tested for various applications in catalysis, H 2 S and N 2 adsorptions, iodine storage, and separation of hexane isomers and bioalcohols [33,[61][62][63][64][65]. In all the above discussed cases, densified MOFs exhibited improved volumetric adsorption capacities or separation properties.…”

Section: Properties and Applications Of Densified Mofsmentioning

confidence: 99%

“…Thus, shaping up these materials to desired forms is essential to avoid any pressure drops in gas columns due to powder compaction [65]. Thus, ZIF-8 has been densified in the form of pellets and monoliths and tested for various applications in gas adsorption, gas separation, and catalysis [33,[61][62][63][64][65]. four ZIF-8 samples were identical to that of ZIF-8 powder according to the XRD patterns shown in Fig.…”

Section: Densification Of Mechanically Robust Zif-8mentioning

confidence: 99%

Adsorption, separation, and catalytic properties of densified metal-organic frameworks

Nandasiri

Jambovane

McGrail

et al. 2016

Coordination Chemistry Reviews

288

166

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Metal-organic frameworks (MOFs) are one of the widely investigated materials of 21 st century due to their unique properties such as structural tailorability, controlled porosity, and crystallinity. These exceptional properties make them promising candidates for various applications including gas adsorption and storage, separation, and catalysis. However, commercial applications of MOFs produced by conventional methods including solvothermal or hydrothermal synthesis are rather limited or restricted because they often produce fine powders. The use of MOF powders for industrial applications often results in pressure drop problems similar to the case with Zeolites and limited robustness against water. To realize these materials for practical applications, densification of MOFs (by increasing pellet density) is routinely employed to form pellets, extrudates or beads to improve the overall density, volumetric adsorption, mechanical and thermal properties. However, the improvements come with some drawbacks such as reduction in overall porosity, surface area, and gravimetric adsorption capacity. Thus, optimizing the properties of densified MOF's by tuning the pellet density is very crucial for realizing these materials for industrial applications. Methods that increase the packing density in MOFs (for example by intentional interpenetration etc.,), which is different from pellet density, is not the scope of this review. In this review, the properties and applications of densified MOFs with different metal clusters and organic linkers are discussed.

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H2S interaction with HKUST-1 and ZIF-8 MOFs: A multitechnique study

Cited by 99 publications

References 30 publications

Phase Dependent Encapsulation and Release Profile of ZIF-Based Biocomposites

Phase Dependent Encapsulation and Release Profile of ZIF-Based Biocomposites

High pressure effects on hydrate Cu-BTC investigated by vibrational spectroscopy and synchrotron X-ray diffraction

Adsorption, separation, and catalytic properties of densified metal-organic frameworks

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