A team of researchers from Kyushu University has developed a novel iridium-based compound that can efficiently store electrons from hydrogen in a solid state. The stored electrons can be extracted and used to catalyze useful chemical reactions, such as cyclopropanation, with significant advantages over conventional techniques.
Researchers developed an ultra-compact seismic source to continuously monitor carbon reservoirs, detecting CO2 leaks and changes that require attention. The Portable Active Seismic Source (PASS) technology can be deployed affordably and has potential applications in monitoring for disasters and imaging subsurface structures.
Researchers investigate storage of CO2-N2-O2 mixtures in geological formations, suggesting environmentally safe and economically viable approach to remove carbon from atmosphere. Direct air capture technology enables carbon capture anywhere, reducing transportation costs and improving social acceptance.
Researchers led by Kyushu University have developed a new method to explore key phenomena associated with multiphase fluid flow in porous materials, overcoming the limitation of viscous coupling effects. The new approach combines pore network modeling and lattice Boltzmann simulations, allowing for accurate capture of viscous coupling ...
Membrane-based Direct Air Capture (m-DAC) technology has been developed to efficiently capture CO2 from ambient air. The technology uses organic polymer membranes to separate carbon dioxide with high efficiency and competitive energy expenses.
Scientists at Kyushu University created composite membranes with ultrathin layers that selectively separate CO2 from nitrogen, thanks to the molecularly thin interface formed between polymers. The discovery opens a new area for designing more efficient membranes for industrial CO2 capture applications.
Researchers at Kyushu University analyzed data from NASA's InSight lander to determine the sources of different types and frequencies of Martian microtremors. The study found that low-frequency P-waves were related to changes in wind and solar irradiation, while higher-frequency ambient noises were dominated by lander vibration.
Researchers have discovered a connection between earthquakes and volcanic eruptions at Mount Aso in Japan. By analyzing very long period seismic waves, they found that earthquakes can trigger changes in pressure variations associated with magmatic activity, leading to eruptions.
Computational study simulates CO2 reacting with rock surfaces to form carbonate minerals, revealing a stable method of long-term carbon storage. The findings suggest that 'mineral trapping' can be used for carbon storage and provide insights into the chemistry of CO2 mineralization.
A novel method for monitoring surface wave velocities in the shallow subsurface has been developed by researchers at Kyushu University, providing high spatiotemporal resolution. The approach enables accurate detection of natural phenomena and fluid leakage from deep underground storage sites.
A new method for evaluating pore geometry heterogeneity has been introduced based on persistent homology theory. The method was applied to four types of rocks with different pore structures, resulting in accurate estimates of rock heterogeneity and physical properties such as permeability and elasticity.
Researchers at Kyushu University have developed a novel electrolytic flow cell that can produce glycolic acid (GC) from oxalic acid, offering a promising solution for energy storage. The device uses a polymer membrane and porous TiO2 catalyst to achieve high efficiency and capacity.
Scientists analyzed seismic data from Japan's Hi-net network to identify changes in subsurface conditions before and after the 2016 Kumamoto earthquake. These changes, including slowed seismic velocity, may signal impending earthquakes or volcanic activity.
Researchers at Kyushu University developed a method to tune the fluorescence wavelength of carbon nanotubes by tethering organic molecules. This enables fine control over the emission wavelength, with potential applications in biomedical devices and bioimaging.
Researchers at Kyushu University used spectro-electrochemistry to investigate the frequency shifts in infrared fluorescence of modified carbon nanotubes. They found that the gaps between electron energy levels depend on the elements bonded to the exterior of the nanotubes.
Researchers at Kyushu University developed a device harnessing near-infrared light to drive the water-splitting reaction and produce hydrogen gas efficiently. This breakthrough enables a broader spectrum of light to be harvested, including UV, visible, and NIR, increasing the potential for clean energy storage.
Researchers at Kyushu University have identified a strong influence of pre-existing faults on earthquake location and behavior in the Nankai Trough offshore Japan. The study found that aftershocks only occurred in front of an ancient accretionary prism, where stress accumulation is greatest.
Researchers at Kyushu University developed a metal complex catalyst that mimics two natural energy processes, hydrogenase and photosystem II. The catalyst produces electrical power by accepting electrons from hydrogen and generates power from sunlight through oxidation of water.
Japanese researchers investigated the effects of charged group spacer length on hydration state in polymer brushes, revealing a clearer picture of the relationship between structure and properties. The results show that hydration states are independent of chain spacer length, with water uptake not affected by this parameter.
Researchers at Kyushu University have developed a multifunctional catalyst that can oxidize both hydrogen and carbon monoxide in the same reaction system. The catalyst mimics the behavior of two enzymes and shows promise for increasing energy production efficiency from hydrogen fuel cells.
Researchers at Kyushu University have developed a new simulation method to predict the behavior of oil, carbon dioxide, and water in underground reservoirs. The approach can help identify optimal sites for carbon sequestration, which could significantly increase energy supply and combat climate change.
Simulating CO2 saturation in rocks could provide a breakthrough in carbon capture and storage by estimating the rocks' potential locations. Researchers at Kyushu University have developed a technique to characterize fluid displacement processes, allowing for more accurate estimation of storage capacity and leakage risk.
Researchers at Kyushu University have developed a new method for creating uniform, highly active gold nanoparticle catalysts for fuel cells. The novel approach involves wrapping a graphene support in a specially prepared polymer, resulting in the lowest overpotential ever reported for this type of reaction.
A new process has been developed to isolate high-quality single-walled carbon nanotubes with minimal damage and at high purity. The technique uses supramolecular hydrogen-bonding polymers to sort nanotubes according to their structure and length, enabling precise customization for optoelectronic devices.