We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Solvent-resistant polyHOF membranes with well-defined nanostructures and high structural stability
AI summary Read the abstract
This research develops solvent-resistant polymer membranes structured around hydrogen-bonded organic frameworks (HOFs) with precise nanoscale architecture. The well-defined pore structure of HOFs enables selective molecular separation even in harsh solvent environments where conventional membranes degrade. These membranes have potential applications in chemical processing and water purification where durability and selectivity are critical.
Hydrogen-bonded organic frameworks (HOFs) have gained growing attention in the design and fabrication of advanced nanoporous membranes, while there have been few reports about their potential applications requiring long-term immersion of membranes in liquid, especially organic solvents. Herein, we fabricated solvent-resistant HOF@polymer (polyHOF) membranes through facile polymer network-reinforced synthesis strategy of polyHOF nanosheets, followed by vacuum filtration. Two hydrophilic polymers, polyvinyl alcohol (PVA) and polyethylene glycol (PEG), were selected to form multiple-site hydrogen bonding interactions with the pristine HOF framework. Benefiting from the reinforced hydrogen bonding networks and the electrostatic interactions between polymer chains and the HOF framework, these polyHOF membranes demonstrate exceptional stability in many solvents (even in water) for more than 30 days. Moreover, the enriched and regular channel of HOF enables the ultrafast solvent permeance (367.8 L·m−2·h−1·bar−1 to water) and precise molecular sieving (> 99.6% rejection to Evans blue). This modification technique presents a generic and promising strategy to robust HOF membranes, which can maintain high performance during long-term operation.
More Papers Like This
Advancements in Organic Solvent Nanofiltration: The Critical Role of Polyamide Membranes in Sustainable Industrial Applications
AI summary Read the abstract
This review examines polyamide membranes as the leading material for organic solvent nanofiltration (OSN), highlighting how advances in nanostructured additives, interfacial polymerization, and crosslinking have improved selectivity and stability, while challenges such as fouling and solvent degradation continue to limit wider industrial adoption for sustainable chemical separations.
A simple and sequential strategy for the introduction of complexity and hierarchy in hydrogen-bonded organic (HOFs) crystals for environmental applications
AI summary Read the abstract
Researchers developed a simple, sequential strategy for building hierarchical hydrogen-bonded organic frameworks (HOFs) with combined hierarchies in composition, architecture, and porosity by controlling assembly conditions without catalysts, demonstrating the approach's potential for environmental applications such as pollutant removal.
A simple and Sequential Strategy for the Introduction of Complexity and Hierarchy in Hydrogen-bonded Organic Framework (HOF) Crystals for Environmental Applications
AI summary Read the abstract
Researchers developed a sequential self-assembly strategy to introduce hierarchical complexity into hydrogen-bonded organic framework (HOF) crystals without surface functionalization or templates. The approach yielded the first core-shell HOF-on-HOF crystals with superhydrophobic properties and the ability to capture persistent water contaminants including oils and microplastics.
A Simple and Sequential Strategy for the Introduction of Complexity and Hierarchy in Hydrogen‐Bonded Organic Framework (HOF) Crystals for Environmental Applications
AI summary Read the abstract
Scientists developed a new type of porous crystalline material called a hydrogen-bonded organic framework (HOF) that can trap microplastics and oils from water, demonstrating a potential new approach for water decontamination. The material was engineered to form hierarchical structures without complex surface treatments, making the fabrication process relatively accessible for scale-up.
Double-Modified Composite Membranes with Organic Framework Nanoparticles for Nanoplastics Removal: Insights from Density Functional Theory Modeling
AI summary Read the abstract
Researchers developed a dual-modified composite membrane combining hydrogen-bonded organic framework and metal-organic framework nanoparticles, achieving both high water permeability and strong rejection of nanoplastic particles, outperforming single-modification membranes in water treatment performance.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.