Themed collection Zeolites and 3D Porous Solids

Linde Type A (LTA) zeolite-based membranes have demonstrated excellent selectivity in pervaporation due to their unique structural framework and interaction with water.

We present a review on some recent studies on the syntheses, structures and properties of amine-functionalized MOFs, and highlight the benefits of amino functionality towards potential applications in CO₂ capture, membranes and catalysis.

Current and recent advances in polymeric and nano-enhanced membrane developments for reverse osmosis are reported in terms of membrane performance and fouling.

A green and cost-effective process for UiO-66 synthesis with a facile and efficient solvent-free template oriented route.

Hierarchical SAPO-34 crystals were synthesized by a facile TEAOH etching post-treatment for the first time.

CO₂ permeability of zeolite A/PTMSP MMM increases with water content in the system, enhancing CO₂/N₂ and CO₂/CH₄ selectivities of PTMSP.

We report the organic template-free synthesis of hierarchical ZSM-5 zeolite using waste materials, by a simple hydrothermal method and their excellent anti-cancer activity against A549 human lung epithelial cell lines.

For screening purposes, mixture separations with MOFs are evaluated on the basis of a combined selectivity/capacity metric.

Novel diquaternary pyrazolium templates with different spatial sizes have unique effects on zeolite phase selectivity and macromorphology.

We report a combination of the shape selectivity effect of zeolites and external surface alkylation to produce larger molecules.

Crystal defects in BaSO₄ catalyst provide acid sites that catalyze the dehydration of lactic acid to acrylic acid.

Hybrid TiO₂/ZIF-8 nanobeads have been prepared by decorating the surface of mesoporous TiO₂ spheres with ZIF-8 nanoparticles and enhanced photocatalytic activity of Cr(VI) reduction than pristine TiO₂ beads due to their hybrid nanostructures.

A dandelion-like SAPO-11 with multiple branches was fabricated by seed-induced-steam-assisted conversion, which combined an in situ inoculating seed method (the initial gel pre-crystallized at 433 K for 24 h) and steam-assisted conversion process.

Graphene oxide (GO) was incorporated into polyimide (PI) to fabricate GO/PI mixed matrix membranes (MMMs), which show a high water flux (36.1 kg m⁻² h⁻¹) and a high salt rejection (99.9%) for desalination of 3.5 wt% seawater at 90 °C.

C₅-Sugars form a new bio-monomer (trans-2,5-dihydroxy-3-pentenoic acid methyl ester), which can undergo enzymatic copolymerization with E6-HH to form multifunctional polymers.

A series of hierarchical ZSM-5 zeolites with different Si/Al ratios were successfully prepared using a seed-deduced method and the addition of organosilicone reagents into the medial synthesis system.

Nano-sized ZSM-5 zeolite aggregates with mesopores and high catalytic activity were prepared by a modified seed-induced method using silicate-1 as seeds without additional templates in the presence of a trace amount of CTAB.

A series of novel 3D lanthanide MOFs based on unsymmetrical 1,2,3-triazole-containing tricarboxylic acid ligand (H₃TAIP) has been synthesized. Compound 1 [Tb(TAIP)(DMF)₂] exhibits selective detection of 4-nitrotoluene and Fe³⁺ ion.

Zeolite ZSM-5 (SiO₂/Al₂O₃ = 50) has been treated with hydrofluoric acid (HF) solutions, characterized with many techniques and studied in the conversion of methanol to gasoline (MTG).

The MOF 1 shows an unusual (4,4)-connected 3D porous network. The high quenching efficiency of 1 is up to 98.2% at 160 ppm NBZ. 1 displays highly selectivity, sensitivity and recyclability in the detection of nitrobenzene.

To investigate the corresponding relationship between catalytic efficiency and structure, MnO₂ nanomaterials (nanospheres, nanosheets, nanorods) have been prepared successfully, and were thoroughly characterized by SEM and TEM.

Ni_xCo_1−x(OH)₂ composite microspheres are successfully synthesized with the assistance of alkali solution by employing a bimetallic Co–Ni–MOF as both the precursor and the self-sacrificing template, demonstrating excellent electrochemical performance.

A π-electron conjugated ligand has been employed in a Zn-MOF efficient fluorescent sensor for determining electron-deficient nitroaromatics.

Pesticide removal from wastewater is of significant general benefit to protect of humans from the effect of pollution.

The title compound is a potential candidate for developing novel luminescence sensors for the selective sensing of nitrobenzene which can be deployed for explosives, Fe³⁺ and organic dyes.

An anionic metal–organic framework, [HDMA]₂[Zn₂(BDC)₃(DMA)]·6DMF is modified by lanthanides and they exhibit selective adsorption ability to cationic dyes. RhB@1 has a rapidest response and realizes sensing acetone and aniline.

A hexagonal COF has been designed via Schiff-base condensation reaction between 1,3,5-tris-(4-aminophenyl)triazine and 1,3,5-triformylphloroglucinol. It showed excellent sensing behavior towards nitroaromatic compounds through fluorescence quenching and excellent CO₂ uptake.

In this work, metal organic framework (MIL-68(Al)), was synthesized by a simple, fast and low-cost process for simultaneous removal of methylene blue and Rhodamine B, regarded to be toxic and even carcinogenic, from aqueous solution.

White-light emission materials were successfully acquired based on a sequence of isostructural co-doped lanthanide coordination polymers [Eu_xTb_1−x(Hbtca)(phen)] (0 ≤ x ≤ 1).

Using enantiopure (R)-2,2′-dihydroxy-1,1′-binaphthalene-6,6′-dicarboxylic acid as a starting material, we prepared three homochiral MOFs that were further used as chiral stationary phases for HPLC to separate the enantiomers.

A simple and facile solvothermal method is developed for the preparation of a reduced graphene oxide/NH₂-MIL-125(Ti) (rGO–NMTi) hybrid nanocomposite photocatalyst with large specific surface area and thermal stability.

A “three sections, three periods” mechanism is proposed to discuss the formation and transformation of confined species and its effects on catalyst deactivation and product selectivity.

A new composite of mesoporous materials, HKUST-1 metal organic framework and SBA-15, was synthesized and applied to the simultaneous visible-light-driven photodegradation of a binary dye mixture of safranin O and malachite green.

Metal organic frameworks (MOFs) with exceptionally high surface areas, shape selectivity and availability of multiple active sites are suitable materials to serve as solid stationary phase for chromatographic applications.

A series of nano-sized luminescent lanthanide metal–organic frameworks (Ln-MOFs) are developed for application in dye adsorption and fluorescence sensing for monoaromatic hydrocarbons (BTEX).

Zeolitic imidazolate frameworks and polyimide supports improved their affinity during thermal annealing and therefore the separation performance of the membrane.

Surface defection incurs bond breakage and unsaturated Zn-sites and N-sites on the external surface of ZIF-8 particles. These bonds in turn bind H₂O molecules in an aqueous environment, converting ZIF-8 from hydrophobic to hydrophilic.

Dual function of the adsorption and photodegradation for the methylene blue removal over the UiO-66(Ti) nanocomposites.