Metal-organic frameworks (MOFs) have emerged as porous solids of a superior type for the fabrication membranes. However, it is still challenging to prepare uniformly dispersed robust MOF hybrid membrane. Herein, we propose simple and powerful strategy, namely, coordination-driven in situ self-assembly, On basis coordination interactions between metal ions ligands and/or functional groups organic polymer, this method was confirmed be feasible production stable membrane with greatly improved...

Abstract The ability to obtain a maximum loading of inorganic nanoparticles while maintaining uniform dispersion in the polymer is key fabrication mixed‐matrix membranes with high pervaporation performance bioalcohol recovery from aqueous solution. Herein, we report simultaneous spray self‐assembly zeolitic imidazolate framework (ZIF)–polymer suspension and cross‐linker/catalyst solution as method for well‐dispersed ZIF‐8–PDMS nanohybrid membrane an extremely loading. showed excellent...

A homogeneous, nanodisperse ZIF-8/PDMS membrane was prepared by repeated immersion of a polysulfone supporting in dilute suspension and subsequent removal defects using concentrated PDMS solution.

A tubular ceramic‐based multilayer composite nanofiltration membrane has been developed for dye desalination. Poly(acrylic acid)(PAA)/poly(vinyl alcohol)(PVA)/glutaraldehyde(GA) was dynamically assembled on to the inner surfaces of ceramic microporous substrates which had pretreated using dynasylan ameo silane coupling agents. Subsequently, membranes were thermally crosslinked form covalent ester bonds. Experimental results proved that good performance The (GA/PVA/PAA) 3 /ceramic shows over...

A novel membrane material consisting of hydrazone-linked COF-42 incorporated into polydimethylsiloxane (PDMS) exhibits ultra-high selectivity for <italic>n</italic>-butanol/water separation.

The key to preparing dense composite membranes is reducing the thickness of layer with stable separation performance. Herein, we report a nanoconfined membrane prepared by in situ growth Zeolitic Imidazolate Framework (ZIF) nanocrystals nanoporous substrate via fine-tuning contra-diffusion method. on surface was nearly zero. formed ZIF showed state-of-art flux and high stability removing dyes from water. This new strategy expected offer great opportunities for potential practical application...

The key to improving nanofiltration membrane permeance is reducing its thickness while maintaining high rejection. Herein, a 25 nm thick ultrathin polyamide layer was prepared by microphase diffusion-controlled interfacial polymerization (MDC-IP) of poly(ethyleneimine) and trimesoyl chloride, which much thinner than the conventional (CIP) layer. A new formation mechanism for such an presented, included reaction eliminated loose layers due confinement diffusion termination stepwise diffusion....

An automatically controlled spray-layer-by-layer (LbL) assembly method was used to build multilayers onto a tubular ceramic macroporous substrate. Poly(ethyleneimine) (PEI) and poly(acrylic acid) (PAA) were alternately sprayed rotating Scanning electron microscopy (SEM) energy dispersive X-ray spectroscopy (EDX) analyses of different locations on the substrate confirmed that fine coating formed both top surface in pores The pretreatment using water filling greatly influenced self-assembly...

The use of self-assembled monolayers (SAMs) has recently been recognized as an effective way to tailor the surface properties films used in various applications. However, application SAMs preparation separation membranes remains unexplored. In present study, surface-modified poly(dimethylsiloxane) (PDMS) were prepared using fabricate a membrane for pervaporation ethanol/water mixtures. A cross-linked PDMS/polysulfone (PSf) composite was transformed by introducing hydroxyl functionalities on...

The hierarchical-structured superhydrophilic poly(ethylenimine)/poly(acrylic acid) (PEI/PAA)calcium silicate hydrate (CSH) multilayered membranes (PEI/PAA-CSH)n were prepared as aqueous nanofiltration (NF) membrane, and then they transformed into superhydrophobic organic solvent (OSN) by one-step modification of trimethylperfluorinatedsilane (PFTS). Investigation on surface structures properties these indicated that the membrane produced in situ incorporation CSH aggregates PEI/PAA...

Abstract Metal–organic frameworks (MOFs) have emerged as porous solids of a superior type for the fabrication membranes. However, it is still challenging to prepare uniformly dispersed robust MOF hybrid membrane. Herein, we propose simple and powerful strategy, namely, coordination‐driven in situ self‐assembly, On basis coordination interactions between metal ions ligands and/or functional groups organic polymer, this method was confirmed be feasible production stable membrane with greatly...

In this work, the positively or negatively charged anatase TiO2 nanoparticles were synthesized via a low temperature precipitation-peptization process (LTPPP) in presence of poly(ethyleneimine) (PEI) and poly(sodium4- styrenesulfonate) (PSS). X-ray diffraction (XRD) pattern high-resolution transmission electron microscope (HRTEM) confirmed crystalline phase. The charges prepared TiO2, PEI-TiO2 PSS-TiO2 investigated by zeta potentials. results showed that potentials can be tuned from +39.47...