Chemistry Chemical engineering

Rie Makiura, Associate Professor at the Graduate School of Engineering, Osaka Metropolitan University has published a review article on the facile synthesis of nanosheet materials with precise regular nanoscale pores. In 2010, Professor Makiura’s research group succeeded in fabricating the world's first MOF (metal-organic framework) nanosheets on the surface of water using a simple low-energy process. The procedure, which involved adding drops of suitably chosen molecular components to the water surface took advantage of the same phenomenon that causes the formation of oil films and led to the creation of nanosheets of exceptional integrity and stability. In the present review article, Professor Makiura describes the MOF nanosheets developed by her group so far and provides a detailed description of their characteristics and comparison with other MOF nanosheets reported around the world. In addition, she describes the formation mechanism of the MOF nanosheets on the water surface.

Milling rice to separate the grain from the husks, produces about 100 million tons of rice husk waste globally each year. Scientists searching for a scalable method to fabricate quantum dots have developed a way to recycle rice husks to create the first silicon quantum dot LED light. Their new method transforms agricultural waste into state-of-the-art light-emitting diodes in a low-cost, environmentally friendly way.

Research by Japanese scientists at Hiroshima University reveals a way to make ammonia from its constituent molecules of nitrogen and hydrogen at ambient pressure.

When liquid meets gas, a unique zone forms. Variable by nature, molecules can cross from one state to another, combining in unique ways to either desirable or unwanted ends. From heat escaping a mug of coffee to increasing molecular concentrations in chemical solutions, gas-liquid interfaces are ubiquitous across nature and engineering. But a lack of tools capable of precisely controlling such gas-liquid interfaces limit their applications — until now.

Prof. Jong-Soo Lee, DGIST, succeeded in developing green-emitting Cd-Free quantum dot synthesis technology with high color reproduction capability

The Research Center for Thin Film Solar Cell, DGIST succeeded achieving the world’s highest PCE of 12.2% for flexible CZTS thin film solar cells.

Researchers at Osaka Prefecture University have established an approach to identify the orientation of molecules and chemical bonds in crystalline organic-inorganic hybrid thin films deposited on substrates using Fourier transform infrared spectroscopy (FT-IR) and polarized infrared light with a 3D-printed attenuated total reflectance (ATR) unit. This inexpensive method with laboratory-grade equipment quickly reaches the crystal-structure model of even extremely thin films of less than 10 nm.

Researchers discovered, while exploring the photomechanical properties of diarylethene, that under irradiation with UV light the crystal of the compound peels off into micrometer sized crystals at a world’s fastest speed of 260 microseconds. As the material returns to its former molecular structure when exposed to visible light, the exfoliation method positions itself as a candidate for photoactuator manufacturing.

For the first time, researchers have used a novel catalyst process to recycle a type of plastic found in everything from grocery bags and food packaging to toys and electronics into liquid fuels and wax.

A research team, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has developed an electrolyte additive (MA-C60) to reduce the problematic behaviors induced by water contamination and the ROS generated from Li‐rich cathodes.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled a novel technology that can improve the efficiency of quantum dot solar cells to 11.53% has been unveiled.

A research team, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has proposed a new physical phenomenon that promises enhanced storage capacity of a fingernail-sized memory chip by 1,000 times.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has demonstrated that in the presence of polymers (preferably, polyionic liquids), crystals of various types grow in common solvents, at constant temperature, much bigger and much faster when stirred, rather than kept still.

Scientists explain how selective electrostatic doping can balance the charge in optoelectronic devices with 2D materials

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has developed a new nanocatalyst that recycles major greenhouse gases, such as carbon dioxide (CO2) and methane (CH4), into highly value-added hydrogen (H2) gas.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled 2D material-based ultrasensitive surface-enhanced Raman spectroscopy (SERS) sensor by synthesizing uniform large-area ReOxSy thin films.

A Hokkaido University research group has successfully demonstrated that carbon-carbon (C-C) covalent bonds expand and contract flexibly in response to light and heat. This unexpected flexibility of C-C bonds could confer new properties to organic compounds.

Scientists at Daegu Gyeongbuk Institute of Science and Technology (DGIST) in Korea have found a way to improve the efficiency of betavoltaic devices, a type of power source that uses an internal radioactive material. This study opens up a new horizon in the field of nuclear batteries for powering set-and-forget electronic devices.

A new catalyst design enables unprecedented control over the modification of fatty acid derivatives that opens the door to creating useful substances in a green and efficient manner.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has introduced a new composite catalyst that could efficiently enhance the charg-discharge performances when applied to metal-air batteries (MABs),

Two faculty members from South Korea's Ulsan National Institute of Science and Technology (UNIST) have been honored with meritorious citations and awards for their outstanding research performance.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has demonstrated bipolar all‐solid‐state Li–S batteries (ASSLSBs) that exhibit exceptional safety, flexibility, and aesthetics, for the first time.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled a novel biomass conversion technology that can turn forestry biomass residues (i.e., sawdust from timber logging) into higher value fuels and chemicals.

A low-cost catalyst on a sulphur-doped, porous, carbon nanostructure improves the performance of lithium batteries that run on air.

A biodegradable biopolymer containing turmeric oil could help extend food shelf life.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled a new way to turn discarded eggshells into hydrogen, an innovative and alternative energy for the future.

A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has presented noble catalysts for water electrolysis, capable of generating hydrogen and oxygen at the same time.

Stable, color-changing compound shows potential for electronics, sensors and gas storage.

Seven faculty members of South Korea's Ulsan National Institute of Science and Technology (UNIST) have distinguished themselves with inclusion in the Global Highly Cited Researchers 2018 List.

Understanding the effect pressure has on soot production during fuel combustion could help reduce polluting emissions.