Water-stable Porous Metal-organic Frameworks Research Articles

Retraction notice to “Application of a water stable porous metal-organic framework for 5-Fu delivery and inhibiting human spinal cord tumor cells” [Inorg. Chem. Commun. 91 (2018) 91–94

Retraction notice to “Application of a water stable porous metal-organic framework for 5-Fu delivery and inhibiting human spinal cord tumor cells” [Inorg. Chem. Commun. 91 (2018) 91–94

Encapsulated anion-dominated photocatalytic and adsorption performances for organic dye degradation and oxoanion pollutant capture over cationic Cu(i)-organic framework semiconductors.

Decontamination of industrial wastewater containing toxic organic dye molecules and oxoanions is urgently desirable for environmental sustainability and human health. Water-stable porous metal-organic frameworks (MOFs) have emerged as highly efficient photocatalysts and/or adsorbents for water purification through controllable integration of the constitutive requirements. To reveal the inclusion anion effect of microporous MOFs on wastewater treatment, two isostructural MOFs incorporating positive charge and semiconductive characteristics, {[Cu(tpt)]·3H2O·0.5SO4}n (1) and {[Cu(tpt)]·2H2O·ClO4}n (2, tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine), have been synthesized and employed as dual-functional materials for both dye photodegradation and oxoanion removal. The two MOFs possess the same 3-fold interpenetrating cationic backbones but are encapsulated by highly disordered sulfate or perchlorate in the open channels. These included anions have significantly tuned the hydrophilicity of the channels, extended the visible-light absorption, optimized the bandgap and decreased the conduction band potential. Under the low-energy irradiation of a 30 W LED lamp, MOF 1 has selectively and efficiently degraded rhodamine B compared to 2 with accelerated kinetics, resulting from the stronger reduction ability and less migration resistance of the photogenerated electrons. Instead, MOF 2 can quickly capture harmful MnO4- and Cr2O72- by exchanging with the entrapped ClO4-, with maximum adsorption amounts of 557 and 168 mg g-1, respectively, under ambient conditions. The improved decolorization of the aqueous solution over 2 benefits essentially from the shape and charge memory effect and the smaller hydration energy of ClO4- than SO42-. These interesting observations highlight the importance of the included anions inside the porous MOF semiconductors on wastewater treatment.

Coating sponge with multifunctional and porous metal-organic framework for oil spill remediation

It is worth to synthesize high-efficient sorbents for oil spill on ocean or rivers due to its fatal influence on marine life as well as human beings. This article introduced a highly hydrophobic and oleophilic composite material (MS-CMC-HPU-13) consists of water-stable porous Metal-Organic Framework (MOF) crystals and melamine sponge (MS). This specified composite material exhibited excellent recoverable and recyclable absorption performance of oil and organic solvents. The oil adsorption capacity of MS-CMC-HPU-13 can reach up to 13,000%, proving its potential ability to clean up oil spill. Besides, an oil collecting device assembled by MS-CMC-HPU-13, pipe and self-suction pump is constructed, which can collect oil continuously from the water surface with high speed under harsh conditions.

RETRACTED: Application of a water stable porous metal-organic framework for 5-Fu delivery and inhibiting human spinal cord tumor cells

Abstract A water-stable porous Zn-based metal-organic framework with the chemical formula of {[Zn(bptc)(H2O)]·(DMA)4}n (1, DMA = N,N-dimethylacetamide) has been synthesized and structurally characterized using the biphenyl-3,3′,5,5′-tetracarboxylic acid (H4bptc). The single X-ray study reveals that complex 1 belongs to the chiral tetragonal space group I4122, and features chiral four-fold helical metal chains as SBUs. Furthermore, complex 1 exhibits 1D nano-sized channels with a pore diameter of 12.1 × 12.1 A2 along the c axis and a high pore volume of 50.9%. In particular, the desolvated 1 could adsorb around 51.2 wt% 5-fluorouracil (5-Fu) and the cumulative release value of 5-Fu at 72 h was about 84.9% in PBS (pH 7.4) at 37 °C. In addition, in vitro anticancer activity of compounds 1 and 5-Fu loaded 1a on four human spinal cord tumor cells (U266, MM1S, RPMI-8226 and KM-3) was further determined.

Gas Adsorption and Separation by the Al-Based Metal–Organic Framework MIL-160

One of the most promising technologies, with a low energy penalty, for CO2 capture from diverse gas mixtures is based on the adsorption process using adsorbents. Many efforts are still currently deployed to search for water stable porous metal–organic frameworks (MOFs) with high CO2 affinity combined with large CO2 uptake. In this context, we have selected the water stable and easily scalable Al-based MOF MIL-160 showing an ultramicroporosity and potential interacting sites (hydroxyl and furan), both features being a priori relevant to favor the selective adsorption of CO2 over other gases including H2, N2, CH4, and CO. Density functional theory (DFT) and force-field-based grand-canonical Monte Carlo (GCMC) simulations were first coupled to predict the strength of host/guest interactions and the adsorption isotherms for all guests as single components and binary mixtures. This computational approach reveals the promises of this solid for the selective adsorption of CO2 with respect to these other investig...

Synthesis Optimization, Shaping, and Heat Reallocation Evaluation of the Hydrophilic Metal-Organic Framework MIL-160(Al).

The energy-storage capacities of a series of water-stable porous metal-organic frameworks, based on high-valence metal cations (Al3+ , Fe3+ , Cr3+ , Ti4+ , Zr4+ ) and polycarboxylate linkers, were evaluated under the typical conditions of seasonal energy-storage devices. The results showed that the microporous hydrophilic Al-dicarboxylate MIL-160(Al) exhibited one of the best performances. To assess the properties of this material for space-heating applications on a laboratory pilot scale with an open reactor, a new synthetic route involving safer, greener conditions was developed. This led to the production of MIL-160(Al) on a 400 g scale, before the material was shaped into pellets through a wet-granulation method. The material exhibited a very high energy-storage capacity for a physical-sorption material (343 Wh kg-1 ), which is in full agreement with the predicted value.

Water Stable Metal–Organic Framework Evolutionally Formed from a Flexible Multidentate Ligand with Acylamide Groups for Selective CO2 Adsorption

A water stable porous metal–organic framework has been synthesized through an evolution approach in terms of both structures and properties. This interesting pillar-layered MOF ({[Cu2(TCMBT)(bpp)(μ3-OH)]·6H2O}n (1)) constructed from a flexible ligand possesses a BET surface area of 808.5 m2 g–1 and exhibits good selectivities of CO2/N2 (20.1:1) and CO2/CH4(4.0:1), which are comparable to those of the ZIF materials reported by Yaghi’s group. The excellent water stability of complex 1 would be quite preferable in practical application.