\graphene – TechFragments

TechFragments

Menu

Tag: graphene

A Graphene Superconductor That Plays More Than One Tune

Researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a graphene device that’s thinner than a human hair but has a depth of special traits. It easily switches from a superconducting material that conducts electricity without losing any energy, to an insulator that resists the flow of electric current, […]

Carbon Dioxide Absorption By Boron Nitride Foam

A light foam created from two-dimensional sheets of hexagonal boron nitride by materials scientists at Rice University absorbs carbon dioxide. They discovered freeze-drying hexagonal-boron nitride (h-BN) transformed it into a macro-scale foam that disintegrates in liquids. But adding a bit of polyvinyl alcohol (PVA) into the mix turned it into a far more robust and […]

Graphene Quantum Dots Recycle Waste CO2 Into Fuel

Nitrogen-doped graphene quantum dots could represent a simple method for recycling waste carbon dioxide into valuable fuel, rather than releasing it into the atmosphere or burying it underground, say Rice University scientists. Nitrogen-doped graphene quantum dots (NGQDs) are an efficient electrocatalyst to make complex hydrocarbons from carbon dioxide, according to the research team. Using electrocatalysis, […]

Super-wrinkled Graphene Improves Battery Electrode Performance

A new method for making ultrathin metal-oxide sheets containing intricate wrinkle and crumple patterns has been found by researchers at Brown University. The textured metal-oxide films have better performance when used as photocatalysts and as battery electrodes, the researchers show in the journal ACS Nano. The findings extend previous work done by the same research […]

Light-controllable Dispersion And Recovery Of Graphene

A simple and effective way of capturing graphenes and the toxins and contaminants they attract from water by using light has been found by Monash University researchers. The findings, published in the Royal Society of Chemistry journal Nanoscale, could have important ramifications for large-scale water purification. A modest quantity of a special light-sensitive soap was […]