Metal–Organic Framework UiO-68 and Its Derivatives with Sufficiently Good Properties and Performance Show Promising Prospects in Potential Industrial Applications

Ye, Xin; Liu, Dingxin

doi:10.1021/acs.cgd.1c00460

Cited by 28 publications

(9 citation statements)

References 138 publications

(266 reference statements)

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“…For activation of these materials, the samples were immersed in fresh DMF (8 × 8 mL) at 80 °C for two days, and then, the solvent was exchanged sequentially with fresh tetrahydrofuran (THF) (6 × 8 mL) and acetone (6 × 8 mL) at room temperature for four days. − The solvent-exchanged materials were then activated in a high vacuum oven for 12 h at 90 °C.…”

Section: Methodsmentioning

confidence: 99%

Engineering UiO-68-Typed Homochiral Metal–Organic Frameworks for the Enantiomeric Separation of Fmoc-AAs and Mechanism Study

Yuan

et al. 2023

ACS Appl. Mater. Interfaces

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Homochiral metal−organic frameworks (HMOFs) have been widely investigated in the application of enantiomeric separation. Nonetheless, it remains a significant challenge to explore the effect of multiple weak interactions between HMOF adsorbents and chiral adsorbates on enantiomeric separation performance still. In this work, robust chiral amine-alcohol-functionalized UiO-68-typed Zr-HMOFs 1−3 with the same hydrogen-bonding sites but slightly different π-binding sites were prepared for the enantioseparation of amino acid derivatives (Fmoc-AAs) with large πbinding groups. As a consequence of multiple host−guest interactions, these Zr-HMOFs exhibit speedy adsorption and high adsorption capacity for Fmoc-L/D-AAs and dissimilar enantioselectivity for the adsorption of their enantiomers. Materials 1 and 2 exhibit excellent enantioselective separation performance for Fmoc-valine with a single terminal π-binding group, while material 3 displays excellent enantioselective separation performance for Fmoc-phenylalanine and Fmoc-tryptophan with π-binding groups at both ends. As evidently demonstrated by our experimental and density functional theory (DFT) computational results, when the number of π-binding groups preset in the confined chiral space of adsorbents matches the number of π-binding groups of chiral adsorbates, the synergism of π−π or σ−π interactions will increase enantioselectivity; otherwise, the competition interactions from redundant identical binding sites will weaken enantioselectivity. Our case not only provides a tremendously typical system for investigating the collaborative discrimination of multiple weak interactions and exploring the impact of relatively excessive binding sites of HMOF adsorbents or chiral adsorbates on the enantioselective separation performance but also provides guidance for targeted functional modifications of high-performance chiral porous materials.

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Section: Methodsmentioning

confidence: 99%

Engineering UiO-68-Typed Homochiral Metal–Organic Frameworks for the Enantiomeric Separation of Fmoc-AAs and Mechanism Study

Yuan

et al. 2023

ACS Appl. Mater. Interfaces

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“…As reported in Table 3, MIL-53(Fe), with a minimal BET surface area, has had a better performance for MR capture from the aquatic environment than modified zeolite and activated carbon [99,100]. Zirconium-based MOFs cover a wide range of MOFs including UiO-series such as UiO-66 [101], UiO-67 [102], and UiO-68 [103], as well as PCN-series such as PCN-222 [104], PCN-521 [105], MOF-808 [106], MOF-812 [107], NU-1000 [108], and NU-1100 [109]. Zrbased MOFs have efficient performance in the removal of various contaminants from the aquatic environment, especially dyed contaminants.…”

Section: Mil-types Mofsmentioning

confidence: 99%

Recent Advances in MOF-Based Adsorbents for Dye Removal from the Aquatic Environment

et al. 2022

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The adsorptive removal of dyes from industrial wastewater using commercially available adsorbents is not significantly efficient. Metal–organic frameworks (MOFs) offer outstanding properties which can boost the separation performance over current commercial adsorbents and hence, these materials represent a milestone in improving treatment methods for dye removal from water. Accordingly, in this paper, the recent studies in the modification of MOF structures in dye removal from the aquatic environment have been discussed. This study aims to elaborate on the synthetic strategies applied to improve the adsorption efficiency and to discuss the major adsorption mechanisms as well as the most influential parameters in the adsorptive removal of dyes using MOFs. More particularly, the advanced separation performance of MOF-based adsorbents will be comprehensively explained. The introduction of various functional groups and nanomaterials, such as amine functional groups, magnetic nanoparticles, and carbon-based materials such as graphene oxide and CNT, onto the MOFs can alter the removal efficiency of MOF-based adsorbents through enhancing the water stability, dispersion in water, interactions between the MOF structure and the contaminant, and the adsorption capacity. Finally, we summarize the challenges experienced by MOF-based materials for dye removal from water and propose future research outlooks to be considered.

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“…42,43 These MOFs are characterized by a wide band gap of 4.07, 3.68, and 2.92 eV for UiO-66, UiO-67, UiO-68, respectively, making them difficult to use in visible light. 44 In recent years, several approaches have been reported for shifting the photosensitivity of UiO-MOFs into visible light, including the functionalization of organic linkers 45 and the creation of heterostructures. 46…”

Section: Uio Family (Universitetet I Oslo)mentioning

confidence: 99%

“…The theoretical values for the pore volumes of UiO‐MOFs are 0.45, 1.05, and 1.82 cm 3 ·g −1 , and the theoretical values for the specific surface areas are 1087, 3000, and 4170 m 2 ·g −1 for UiO‐66, UiO‐67, UiO‐68, respectively 42,43 . These MOFs are characterized by a wide band gap of 4.07, 3.68, and 2.92 eV for UiO‐66, UiO‐67, UiO‐68, respectively, making them difficult to use in visible light 44 . In recent years, several approaches have been reported for shifting the photosensitivity of UiO‐MOFs into visible light, including the functionalization of organic linkers 45 and the creation of heterostructures 46 …”

Section: Mof‐based Photocatalystsmentioning

confidence: 99%

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

Belousov

Fukina

Koryagin

2022

J of Chemical Tech & Biotech

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Heterogeneous photocatalysis has been considered one of the most attractive alternative routes to transforming naturally abundant, clean, and sustainable solar energy into chemical energy. Nowadays, the most popular heterogeneous photocatalyst, titanium dioxide, has already found applications for water splitting to produce hydrogen and oxygen, for the degradation of organic pollutants, for air purification, and for the creation of self‐cleaning coatings. However, TiO2 has a significant limitation: a large band gap (3.0–3.4 eV) that makes it impossible to use anything other than ultraviolet illumination to initiate photocatalytic processes. With a focus on efficient solar‐energy utilization, the development of new photocatalysts that are sensitive to visible light is an important direction in the theory and practice of heterogeneous photocatalysis. In this regard, the use of metal–organic frameworks (MOFs) is an attractive route; they have emerged as an interesting class of materials for applications in photoreactions due to their flexible tunability in composition, structure, and functional properties, along with their facilitated adsorption towards chemicals and their efficient light absorption. Moreover, they can be composed with other semiconductors to produce heterojunctions (e.g., type‐II, Z‐scheme, and S‐scheme), whose effectiveness in photogenerated charge separation has already been proven by many examples. The present critical review reports progress over the last 5 years in the preparation and activity of metal–organic framework‐based heterojunction photocatalysts for the degradation of organic pollutants. © 2022 Society of Chemical Industry (SCI).

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Metal–Organic Framework UiO-68 and Its Derivatives with Sufficiently Good Properties and Performance Show Promising Prospects in Potential Industrial Applications

Cited by 28 publications

References 138 publications

Engineering UiO-68-Typed Homochiral Metal–Organic Frameworks for the Enantiomeric Separation of Fmoc-AAs and Mechanism Study

Engineering UiO-68-Typed Homochiral Metal–Organic Frameworks for the Enantiomeric Separation of Fmoc-AAs and Mechanism Study

Recent Advances in MOF-Based Adsorbents for Dye Removal from the Aquatic Environment

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

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