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Imperfection is OK for better MOFs

Jun 26, 2019

Perfect crystals are not necessarily the most useful. Defects in the ordered crystalline structure of metal-organic frameworks (MOFs) could tailor these versatile materials for specific applications. KAUST researchers have already developed a pioneering method to image the defects using transmission electron microscopy. They now report that creating specific defects, visualizing them, and investigating their chemical effects takes the exploration of MOFs to new levels of detail and control.

#Discovery

Colorful solution to a chemical industry bottleneck

May 08, 2019

KAUST researchers have tailored the structure of graphene-oxide layers to mimic the hourglass shape of these biological channels, creating ultrathin membranes to rapidly separate chemical mixtures.

MOFs can sense and sort troublesome gases

Apr 08, 2019

From astronauts and submariners to miners and rescue workers, people who operate in small enclosed spaces need good air quality to work safely and effectively. Electronic sensors now developed by a KAUST team can simultaneously detect at least three critical parameters that are important to monitor to ensure human comfort and safety.

Cleaning up with cellulose

Mar 10, 2019

Environmentally friendly method for making membranes adds greener options for processing industrial waste. Selectively permeable membranes made from renewable plant-based materials could significantly improve the environmental credentials of the chemical industry. A KAUST team has tested the viability of cellulose membranes to show they can effectively clean wastewater.

Driving water down nanohighways

Mar 03, 2019

Self-assembled channels in a polymer membrane could greatly enhance extraction of water from gases. Removing water vapor from air and other gas mixtures, which is crucial for many industrial processes and air conditioning, could become cheaper and more effective through polymer membrane technology now developed at KAUST.

Crystal clear solvent filtration

Jan 30, 2019

Covalent organic crystal networks generate high-selectivity and high-flux membranes for organic solvent filtration. Covalent organic materials with well-ordered porous microstructures could provide the membranes needed for technology to meet increasingly stringent environmental controls and be cost effective to produce.

A broader bandwidth for electrical devices

Jan 23, 2019

Combining a polymer and microparticles enables a new type of capacitor that could mimic the way the brain processes information. A simple fractional-order capacitor has been developed by a team from KAUST. Made from a single component, this device expands the range of frequencies that can be achieved by these devices, making them better at energy storage.

Crystals that clean natural gas

Nov 05, 2018

Removing the troublesome impurities of hydrogen sulfide (H2S) and carbon dioxide (CO2) from natural gas could become simpler and more effective using a metal-organic framework (MOF) developed at KAUST.

Water desalination picks up the pace

Jul 15, 2018

​A membrane made of porous carbon-fiber structures grown on a porous ceramic substrate is more efficient at filtering seawater than existing similar membranes. Engineered porous membranes could help recover freshwater from heavily polluted groundwater and seawater, which is of critical need in developing countries and arid environments like the Arabian Peninsula

Lining MOF pockets to detect noxious gases

Apr 29, 2018

A porous material with tailor-made pockets stitched into its structure is a promising material for sensing noxious gases. A thin film of the material, coated onto an electrode, formed an electronic sensor that could detect traces of sulfur dioxide gas1. The sensor is a significant step toward real-world devices that can sniff out dangerous gases in real air.

A light touch for revealing atomic frameworks

Mar 05, 2018

Materials that normally become damaged inside electron microscopes can now be imaged with atom-scale resolution.
To understand how atomic structure impacts biological function and chemical behavior, researchers often turn to high-resolution transmission electron microscopy (HRTEM). Many compounds, however, are too sensitive for these microscopes as powerful electron beams can knock out atoms or cause adverse heating. A team from KAUST has now developed a set of tools that can minimize beam damage in HRTEM using low doses of electrons.

A delivery platform for gene-editing technology

Feb 18, 2018

A new delivery system for introducing gene-editing technology into cells could help safely and efficiently correct disease-causing mutations in patients.

The system, developed by KAUST scientists, is the first to use sponge-like ensembles of metal ions and organic molecules to coat the molecular components of the precision DNA-editing technology known as CRISPR/Cas9, allowing efficient release of the genome-editing machinery inside the cell.

Super-adsorbent MOF to control humidity

Feb 04, 2018

Humidity control is a vital aspect of air conditioning, but high energy requirements make conventional methods expensive and environmentally damaging. Researchers at KAUST have developed a metal-organic framework (MOF) that, within its range of applications, could control humidity in an eco-friendly and cost-effective way.

Professor Khashab featured on France 24

Jun 12, 2017

​Professor Niveen Khashab, Associate Professor of Chemical Science, and her research group were recently featured on France 24. The France 24 video focused the group's use of nano-particles for cancer research.

MOFs provide a better way to remove water from gas

May 31, 2017

AMPM Center research: MOFs provide a better way to remove water from gas A breakthrough in generating water-stable metal-organic frameworks allows efficient removal of water from gases.