The development of MOF-based efficient and reusable catalysts for hydrogen production under simulated sunlight irradiation, especially through overall water splitting, remains challenging. This is mainly due to either the inappropriate optical features or poor chemical stability given MOFs. Room temperature synthesis (RTS) tetravalent MOFs a promising strategy design robust their related (nano)composites. By employing these mild conditions, herein, we report first time that RTS leads...

Abstract The size and defects in crystalline inorganic materials are of importance many applications, particularly catalysis, as it often results enhanced/emerging properties. So far, applying the strategy modulation chemistry has been unable to afford high-quality functional Metal–Organic Frameworks (MOFs) nanocrystals with minimized while exhibiting maximized defects. We report here a general sustainable for design highly defective ultra-small tetravalent MOFs (Zr, Hf) crystals (ca. 35%...

Ultrasmall 4 to 6 nm nanoparticles of the metal-organic framework (MOF) UiO-66 (University Oslo-66) were successfully prepared and embedded into polymer Pebax 1657 fabricate thin-film nanocomposite (TFN) membranes for CO

Abstract Room‐temperature syntheses of metal–organic frameworks (MOFs) are interest to meet the demand sustainable chemistry and a pre‐requisite for incorporation functional compounds in water‐stable MOFs. However, only few routes under ambient conditions have been reported produce metal(IV)‐based Reported here is new versatile one‐step synthesis series highly porous M 6 ‐oxocluster‐based MOFs (M=Zr, Hf, Ce) at room temperature, including 8‐ or 12‐connected micro/mesoporous solids with...

The fluorescence-phosphorescence dual solvoluminescence (SL) of water-soluble metal nanoclusters (NCs) at room temperature was successfully achieved by a simple solvent-stimulated strategy. strong interaction between carboxylate ligands and the core nanoscale interface not only induces rigid conformations carbonyl groups but also affords perfect cluster that acts as an exact chromophore NCs for aggregation-induced emission (AIE) mechanics. clustering bearing on polymer backbone chain is...

Zr(IV)-based metal–organic frameworks (MOFs) such as the Zr(IV) trimesate MOF-808 are promising materials for catalytic applications. In this work, we report an aqueous solution-based room-temperature strategy to produce well-defined monodispersed nanocrystals down 35 nm with a high space-time yield, up 2516 kg/m3/day, and excellent crystallinity porosity. The resulting show remarkable colloidal dispersion during 1 day in wide range of nanoparticle concentrations. As result, colloidal-level...

Abstract Encapsulation of active guest compounds inside metal–organic frameworks (MOFs) architectures is one the most promising routes to reach properties beyond those bare MOFs and/or species. In contrast with conventional host/guest composites that rely on encapsulation species into MOF cavities, core–shell display a better accessibility pores ensuring an optimal diffusion substrate while presenting unique structure prevents aggregation and runoff guests ensures tight interaction between...

Encapsulating ultrasmall Cu nanoparticles inside Zr-MOFs to form core-shell architecture is very challenging but of interest for CO2 reduction. We report the first time incorporation NCs into a series benchmark Zr-MOFs, without aggregation, via scalable room temperature fabrication approach. The NCs@MOFs composites show much enhanced reactivity in comparison confined pore MOFs, regardless their similar intrinsic properties at atomic level. Moreover, introducing polar groups on MOF structure...

Abstract Studies of the room temperature synthesis Metal-Organic Frameworks (MOFs) are still scarce and mainly focused on divalent metals based MOFs. The development more chemically robust MOFs is challenging therefore lacks exploration. Here, we review ambient conditions MOFs, from properties sole MOF to their related composites. Low green can not only meet standards sustainable chemistry, but also help achieve a series property enhancements, including applications in catalysis,...

Core–shell Au NPs@MOF-808 architecture has been synthesized using sustainable conditions. NPs capping agent removal optimized to boost the catalytic efficiency of composite material.

It remains unclear whether the emission center of ligand-encapsulated metal nanoclusters (MNCs) is surface ligands or core. In this paper, we simultaneously observed metal-centered and ligand-centered emissions in Ag nanoclusters. The contributions core were individually investigated to understand nature AgNC photoemission. A new ligand synergistic effect was observed. amino correlated nπ* state provides a pivot bridge carboxyl ππ* states enhance charge transfer efficiency between different...

Separation of the C8 aromatic isomers, xylenes (PX, MX, and OX) ethylbenzene (EB), is important to petrochemical industry. Whereas physisorptive separation an energy-efficient alternative current processes, such as distillation, physisorbents do not generally exhibit strong selectivity. Herein, we report mixed-linker square lattice (sql) coordination network [Zn2(sba)2(bis)]n·mDMF (sql-4,5-Zn, H2sba or 4 = 4,4'-sulfonyldibenzoic acid, bis 5 trans-4,4'-bis(1-imidazolyl)stilbene) its sorption...

Lithium–sulfur batteries are considered as promising candidates for next‐generation energy storage devices grid applications due to their high theoretical density. However, the inevitable shuttle effect of lithium polysulfides and/or dendrite growth Li metal anodes hinder commercial viability. Herein, microporous Zr fumarate metal–organic framework (MOF)‐801(Zr) is produce thin (≈15.6 μm, ≈1 mg cm 2 ) mixed‐matrix membranes (MMM) a novel interlayer Li–S batteries. It found that...

Abstract Room‐temperature syntheses of metal–organic frameworks (MOFs) are interest to meet the demand sustainable chemistry and a pre‐requisite for incorporation functional compounds in water‐stable MOFs. However, only few routes under ambient conditions have been reported produce metal(IV)‐based Reported here is new versatile one‐step synthesis series highly porous M 6 ‐oxocluster‐based MOFs (M=Zr, Hf, Ce) at room temperature, including 8‐ or 12‐connected micro/mesoporous solids with...

In this article, we present an unprecedented strategy to prepare bistable porous nanocrystals based on the anchoring of switchable molecules in pores a host matrix through strong host–guest interactions. More precisely, have inserted prototypical Fe(III) spin-crossover complex MOF-808, chemically robust large-pore Zr-based MOF. The loaded hysteretic thermal spin transition close room temperature that is independent loading and MOF particle size while remaining highly porous, which opens up...

In this study, we report a straightforward strategy for Hg2+ ion detection. Fluorescent Au nanoparticles (NPs) were one-pot synthesized using polymer (polyvinyl pyrrolidone [PVP]) as both capping and fluorescence agent. The as-synthesized PVP-Au NPs showed remarkably rapid response selectively ions compared to 14 other metal ions. detection limit of was estimated at 100 nM. We discuss the emission quenching mechanism NPs, former being attributed enhanced latter related static by Hg2+. offers...

A precise and concomitant control of both the size defects in inorganic materials is importance many applications, particularly catalysis, as it often results enhanced properties or emerging new features. So far, applying strategy modulation chemistry has been unable to afford high-quality functional Metal-Organic Frameworks (MOFs) nanocrystals with minimized while exhibiting maximized defects. We report here a general sustainable for design highly defective ultra-small M(IV)-MOFs crystals...

Abstract Ultrasonic technology was, for the first time, utilized in pretreatment of flow-back fracturing fluid (FBFF) an oil field. The effects each parameter, including frequency ultrasonic, energy density, working and dosage flocculant (poly-aluminum chloride), were investigated seriously this study. flocculation as a novel applied FBFF provided good performance at reducing viscosity fluid, even better than chemical oxidation. Keywords: fluidflocculationultrasonic

Viscoelastic surfactant with two-head group was synthesized from monomers of lauric acid, hydroxyethyl ethylenediamine, and sodium chloroacetate in this study. The molecular structure proved by FT-IR. results viscosity property fresh acid spent showed that former one decreased increasing concentration hydrochloric it mainly controlled temperature. Maximum appeared at pH = 4. Besides, affected variation carbon number hydrophobic chain or mixture different surfactant.

Flume experiments were conducted to assess the impact of defined local hydrodynamic conditions on growth process periphytic biofilm. Biofilms developed in four different hydrodynamics with friction velocities 0.0027, 0.0064, 0.0117 and 0.0172 m/s respectively over a 36-day period. The initial colonization microbial community was significantly delayed by high flow velocities. dry mass, bacterial abundance total EPS content biofilms reached their maximal values at critical velocity 0.0064 m/s,...

Lithium-sulfur batteries are considered as promising candidates for next-generation energy storage devices grid applications due to their high theoretical density. However, the inevitable shuttle effect of lithium polysulfides and/or dendrite growth Li metal anodes hinder commercial viability. Here, microporous Zr fumarate MOF-801(Zr) was produce thin (~15.6 µm, ~1mg cm2) mixed matrix membranes (MMM) a novel interlayer Li-S batteries. It found that MOF-801(Zr)/C/PVDF-HFP composite...

<title>Abstract</title> The size and defects in crystalline inorganic materials are of importance many applications, particularly catalysis, as it often results enhanced/emerging properties. So far, applying the modulation chemistry strategy has been unable to afford high-quality functional Metal–Organic Frameworks (MOFs) nanocrystals with minimized while exhibiting maximized defects. We report here a general sustainable for design highly defective ultra-small tetravalent MOFs (Zr, Hf)...