A review on the advancement in photocatalytic degradation of poly/perfluoroalkyl substances in water: Insights into the mechanisms and structure-function relationship.

Poly/perfluoroalkyl substances (PFAS) are persistent organic pollutants and ubiquitous in aquatic environment, which are hazardous to organisms and human health. Several countries and regions have taken actions to regulate or limit the production and emission of some PFAS. Even though a series of water treatment technologies have been developed for removal of PFAS to eliminate their potential adverse effects, the removal and degradation performance are usually unsatisfactory.

Bioinspired Design of a Giant [Mn ] Nanocage-Based Metal-Organic Framework with Specific CO Binding Pockets for Highly Selective CO Separation.

Adsorption-based removal of carbon dioxide (CO ) from gas mixtures has demonstrated great potential for solving energy security and environmental sustainability challenges. However, due to similar physicochemical properties between CO and other gases as well as the co-adsorption behavior, the selectivity of CO is severely limited in currently reported CO -selective sorbents. To address the challenge, we create a bioinspired design strategy and report a robust, microporous metal-organic framework (MOF) with unprecedented [Mn ] nanocages.

An uncommon multicentered Zn-Zn bond-based MOF for CO fixation with aziridines/epoxides.

A novel cluster-based MOF with uncommon multicentered Zn-Zn bonds {[KNaZn(HL)]·4HO} (HL = tetrazole monoanion) (1) was synthesized, which showed higher stability than the reported Zn-Zn bonded compounds. Moreover, 1 can effectively and circularly catalyze the cyclization of CO and aziridines or epoxides with five substituent groups. Importantly, this is the first time that the catalytic properties of MOFs with multicentered metal-metal bonded clusters as the catalyst have been studied.

Photocatalytic Hydrogen Evolution Based on Cobalt-Organic Framework with High Water Vapor Adsorption.

Photocatalytic hydrogen evolution is desired to effectively alleviate the serious crisis of energy and the environment, and the utilization of low-cost photocatalysts, especially cobalt-based MOF catalysts, is meaningful, but rarely investigated. Herein, through a self-assembly strategy, we synthesized a Co clusters-based MOF () by the ligand ,'-bicyclo[2.2.

Highly Efficient Conversion of Propargylic Amines and CO Catalyzed by Noble-Metal-Free [Zn ] Nanocages.

The reaction of propargylic amines and CO can provide high-value-added chemical products. However, most of catalysts in such reactions employ noble metals to obtain high yield, and it is important to seek eco-friendly noble-metal-free MOFs catalysts. Here, a giant and lantern-like [Zn ] nanocage in zinc-tetrazole 3D framework [Zn (Trz) (OH) (H O) ⋅8 H O] Trz=(C N O) (1) was obtained and structurally characterized.

High Uptake of ReO and CO Conversion by a Radiation-Resistant Thorium-Nickle [Th Ni ] Nanocage-Based Metal-Organic Framework.

Assembled from [Th Ni ] nanocages, the first transition-metal (TM)-thorium metal-organic framework (MOF, 1) has been synthesized and structurally characterized. 1 exhibits high solvent and acid/base stability, and resistance to 400 kGy β irradiation. Notably, 1 captures ReO (an analogue of radioactive TcO , a key species in nuclear wastes) with a maximum capacity of 807 mg g , falling among the largest values known to date.

A Cuprous/Lanthanide-Organic Framework as the Luminescent Sensor of Hypochlorite.

A new 3D framework {[Eu Cu(IN) (CO )(H O)] ⋅3 H O}  (1) was obtained and structurally characterized, containing Cu and an unusual lanthanide duplex chain. The luminescent explorations of compound 1 suggest that 1 could emit the characteristic emission of Cu , and 1 can act as the luminescent sensor of ClO with the detection limit of 10  m. Notably, 1 represents the first example of MOF-based sensor for detecting ClO .

A multifunctional MOF as a recyclable catalyst for the fixation of CO with aziridines or epoxides and as a luminescent probe of Cr(vi).

A multifunctional metal-organic framework (1) containing 24-nuclear zinc nanocages shows high solvent- and pH-stability. Compound 1 can be employed as a catalyst for the conversion of CO2 with aziridines or epoxides, which can be reused at least ten times just by a simple and rapid method. The PXRD of compound 1 after ten recyclings remains well consistent with the original one.

Several [Gd-M] Heterometal-Organic Frameworks with [Gd] as Nodes: Tunable Structures and Magnetocaloric Effect.

Tunable structures and magnetocaloric effect (MCE) of seven MOFs with [Gd] as nodes are explored. The [Gd] node is realized from mononuclear [Gd] to binuclear paddle-wheel [Gd], tetranuclear tetrahedral [Gd], and pentanuclear trigonal bipyramidal [Gd]. Meanwhile, the magnetic entropy changes from 19.

A Porous Metal-Organic Framework Assembled by [Cu] Nanocages: Serving as Recyclable Catalysts for CO Fixation with Aziridines.

Based on a novel ligand 5-(2,6-bis(4-carboxyphenyl)pyridin-4-yl)isophthalic acid (HBCP) with large skeletons, a unique porous framework {[Cu(BCP)(HO)]·3DMF} () assembled by nano-sized and censer-like [Cu] cages is successfully obtained and structurally characterized. In , the large 1D channel in frameworks and window size in the nanocages can enrich methylene blue and capture CO, exhibiting the promising applications in environmental protection. More importantly, the explorations on the cycloaddition reaction of CO and aziridines with various substituents suggest that can serve as an efficient heterogeneous catalyst for CO conversion with aziridines in a solvent-free system, which can be reused at least ten times without any obvious loss in catalytic activity.

A Bifunctional Europium-Organic Framework with Chemical Fixation of CO and Luminescent Detection of Al.

A novel three-dimensional lanthanide-organic framework {[Eu(BTB)(phen)]·4.5DMF·2HO} (1) has been synthesized. Structural characterization suggests that framework 1 possesses one-dimensional channels with potential pore volume, and the large channels in the framework can capture CO.

Lanthanide-based metal-organic frameworks as luminescent probes.

Lanthanide-based metal-organic frameworks (Ln-MOFs), as notable materials, are constructed by Ln ions and organic ligands, or Ln ions functionalizing non-Ln-MOFs, and exhibit promising applications in various fields. Over the past decades, quite a lot of investigations of Ln-MOFs have been carried out, and many good results have been obtained. Among these results, Ln-MOFs as luminescent probes for unique detection are gradually becoming a hot topic due to their fast and effective luminescent response for the targeted substance.

Unique (3,4,10)-Connected Lanthanide-Organic Framework as a Recyclable Chemical Sensor for Detecting Al(3.).

Three isostructural Ln-BTB frameworks (Ln = Eu (1), Dy (2), Yb (3)) were synthesized and structurally characterized, in which mononuclear and trinuclear [Ln3] units as nodes construct unprecedented (3,4,10)-connected 3D frameworks with (4·6·8)4(4·8(2))2(4·8(5))(6(2)·8(4))(4(5)·6(8)·8(26)·10(6)) point symbol. The luminescent investigations revealed that compound 1 can sensitively and selectively detect Al(3+), but comparably compound 2 could not detect Al(3+) among various cations. More importantly, 1 as an Al(3+) sensor can be reused at least five times, which represents the first recyclable metal organic framework (MOF)-supported Al(3+) sensor.

First tetrazole-bridged d-f heterometallic MOFs with a large magnetic entropy change.

A novel 3D tetrazole-bridged 3d-4f heterometallic MOF {(H3O)3[Gd3Mn2(Trz)4]·12H2O}n (1) with a hexanuclear [Gd6] cluster was obtained via in situ [2+3] cycloaddition reaction and structurally characterized, possessing good solvent and thermal stabilities, as well as a large magnetic entropy change -ΔS(m) = 40.3 J kg(-1) K(-1) for ΔH = 7 T at 2.0 K.

Lanthanide organic framework as a regenerable luminescent probe for Fe(3+).

A unique three-dimensional Tb-BTB framework (1) with two types of one-dimensional channels was obtained and structurally characterized, exhibiting high thermal stability. Luminescent investigations reveal that 1 can detect Fe(3+) with relatively high sensitivity and selectivity. Importantly, 1 as the luminescent probe of Fe(3+) can be simply and quickly regenerated, which represents a rare example in reported luminescent sensors of Fe(3+).

A water-stable lanthanide-organic framework as a recyclable luminescent probe for detecting pollutant phosphorus anions.

A novel 3D Eu-BTB framework () containing three types of 1D channels was synthesized and structurally characterized. Compound exhibits high thermostability and water stability with the pH range from 2 to 12. Additionally, the luminescence explorations revealed that can sensitively and selectively detect pollutant PO4(3-) among various colourless anions.