Category Chemistry/Nanotechnology

Mixed halide perovskites for spectrally stable and high-efficiency blue light-emitting diodes. Researchers at Linköping University, Sweden, have developed efficient blue light-emitting diodes based on halide perovskites. “We are very excited about this breakthrough,” says Feng Gao, professor at Linköping University. The new LEDs may open the way to cheap and energy-efficient illumination.

Illumination is responsible for approximately 20% of global electricity consumption, a figure that could be reduced to 5% if all light sources consisted of light-emitting diodes (LEDs)...

A research team from INRS has developed a process for the electrolytic treatment of wastewater that degrades microplastics at the source. Wastewater can carry high concentrations of microplastics into the environment. These small particles of less than 5 mm can come from our clothes, usually as microfibers. Professor Patrick Drogui, who led the study, points out there are currently no established degradation methods to handle this contaminant during wastewater treatment. Some techniques already exist, but they often involve physical separation as a means of filtering pollutants. These technologies do not degrade them, which requires additional work to manage the separated particles.

Therefore, the research team decided to degrade the particles by electrolytic oxidation, a process n...

Study shows improvements to chemical sensing chip that aims to quickly and accurately identify drugs and other trace chemicals. University at Buffalo researchers are reporting an advancement of a chemical sensing chip that could lead to handheld devices that detect trace chemicals — everything from illicit drugs to pollution — as quickly as a breathalyzer identifies alcohol.

The chip, which also may have uses in food safety monitoring, anti-counterfeiting and other fields where trace chemicals are analyzed, is described in a study that appears on the cover of the Dec...

Powerful graphene hybrid material for highly efficient supercapacitors. A team working with Roland Fischer, Professor of Inorganic and Metal-Organic Chemistry at the Technical University Munich (TUM) has developed a highly efficient supercapacitor. The basis of the energy storage device is a novel, powerful and also sustainable graphene hybrid material that has comparable performance data to currently utilized batteries.

Usually, energy storage is associated with batteries and accumulators that provide energy for electronic devices. However, in laptops, cameras, cellphones or vehicles, so-called supercapacitors are increasingly installed these days.

Unlike batteries they can quickly store large amounts of energy and put it out just as fast...