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Urban concrete mines

Researchers at the University of Tokyo have developed a method to combine old concrete with carbon dioxide to create a new, durable material called calcium carbonate concrete. The process involves grinding the old concrete into powder, reacting it with CO2 from the air, and then heating it to form the new block.

SourceUniversity of Tokyo·JournalJournal of Advanced Concrete Technology·TypeExperimental study·DateAug 7, 2024

“The magic of making electricity from metals and air” The vexing carbonate has achieved it!

Researchers from Pohang University of Science & Technology have developed a high-energy, high-efficiency all-solid-state sodium-air battery that can reversibly utilize sodium and air without additional equipment. The breakthrough overcomes the challenge of carbonate formation, increasing energy density and reducing voltage gap.

SourcePohang University of Science & Technology (POSTECH)·JournalNature Communications·DateMay 28, 2024

Out of the park: New research tallies total carbon impact of tourism at Yellowstone

Researchers estimated that recreation visits to Yellowstone produce over one megaton of carbon emissions per year, with an average of 479 kilograms attributable to each visitor. Despite this, the park's ecosystems still pull in around 1.5 megatons of carbon from the atmosphere each year.

Groundbreaking discovery enables cost-effective and eco-friendly green hydrogen production

A new bifunctional water electrolysis catalyst made from ruthenium, silicon, and tungsten enables the efficient production of high-purity green hydrogen. The catalyst demonstrates exceptional durability in acidic environments, making it an attractive alternative to traditional precious metal catalysts.

Breakthrough in organic semiconductor synthesis paves the way for advanced electronic devices

Researchers at UNIST have achieved a significant breakthrough in organic semiconductor synthesis by synthesizing a novel molecule called BNBN anthracene. This derivative exhibits unique properties, including precise modulation of electronic properties without structural changes.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalAngewandte Chemie International Edition·DateDec 29, 2023

New method verifies carbon capture in concrete

Researchers develop a method to verify whether carbon in concrete comes from air or raw materials. By analyzing carbon isotopes, they can confirm direct air capture and certify offsetting CO2 emissions. This technology is crucial for the construction industry and supports a circular economy.

SourceUniversity of Tokyo·JournalJournal of Advanced Concrete Technology·TypeExperimental study·DateNov 27, 2023

Carbon atoms coming together in space

Researchers at Hokkaido University have discovered a mechanism for carbon atoms to come together on the surface of interstellar ice grains, producing complex organic molecules. This process occurs at temperatures above 30 Kelvin and may have played a role in the origin of life on Earth.

SourceHokkaido University·JournalNature Astronomy·TypeExperimental study·DateSep 14, 2023

New study highlights feasibility and optimization of ammonia-based power generation for carbon neutrality

A recent study evaluates the feasibility of ammonia-based power generation through techno-economic and carbon footprint analyses. The research reveals an impressive energy efficiency rate of 46.7% within the designed power generation process, with costs and greenhouse gas emissions considered.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalChemical Engineering Journal·DateSep 8, 2023

New research highlights opportunities to protect carbon and communities from forest fires

A new study identifies locations where proactive forest management can reduce carbon loss and protect communities from wildfires in the Western United States. Proactive forest management techniques like thinning, prescribed fire, and cultural burning can help keep carbon in forests and reduce wildfire risk.

SourceUSDA Forest Service - Rocky Mountain Research Station·JournalEnvironmental Research Letters·TypeComputational simulation/modeling·DateSep 6, 2023

With formic acid towards CO2 neutrality

Researchers develop a new method for fixing carbon dioxide using formic acid, which can replace conventional chemical manufacturing processes with carbon-neutral biological methods. The process produces formaldehyde, a non-toxic substance that can be fed into metabolic pathways to create valuable substances.

SourceMax-Planck-Gesellschaft·JournalNature Communications·TypeExperimental study·DateMay 15, 2023

Toward tunable molecular switches from organic compounds

Researchers at Hokkaido University and Kyushu University have developed a technique to synthesize potential molecular switches from anthraquinodimethanes (AQDs), a group of overcrowded organic molecules. The synthesized derivatives can stably form twisted and folded isomers, as well as other isomeric forms, in different solvents.

SourceHokkaido University·JournalMaterials Chemistry Frontiers·TypeExperimental study·DateApr 6, 2023