Phys.org November 13, 2024 The scientifically recognized definition of Carbon Dioxide Removal requires removed atmospheric CO2 to be stored “durably”; however, it remains unclear what is meant by durably, and interpretations have varied from decades to millennia. An international team of researchers (Switzerland, USA – UC Berkeley) used a reduced-complexity climate model to examine the effect of Carbon Dioxide Removal with varying CO2 storage durations. They found that storage duration substantially affects whether net zero emissions achieve the desired temperature outcomes. With a typical 100-year storage duration, net zero CO2 emissions with 6 GtCO2 per year residual emissions would result […]
Tag Archives: CO2 reduction
Sliver of cool surface water helps the ocean absorb more carbon, study shows
Phys.org October 25, 2024 The ocean annually absorbs about a quarter of all anthropogenic carbon dioxide (CO2) emissions. Global estimates of air–sea CO2 fluxes are typically based on bulk measurements of CO2 in air and seawater and neglect the effects of vertical temperature gradients near the ocean surface. Theoretical and laboratory observations indicate that these gradients alter air–sea CO2 fluxes, because the air–sea CO2 concentration difference is highly temperature sensitive. However, in situ field evidence supporting their effect is so far lacking. An international team of researchers (UK, the Netherlands) presented independent direct air–sea CO2 fluxes alongside indirect bulk fluxes […]
Nanoparticles make it easier to turn light into solvated electrons
Nanowerk January 17, 2023 Solvated electrons are powerful reducing agents capable of driving some of the most energetically expensive reduction reactions. It has been proposed that solvated electrons, which are powerful reducing agents, could be produced by photoexcitation of roughened metal electrodes, but no study has demonstrated a clear mechanism for their generation. A team of researchers in the US (Rice University, Stanford University, UT Austin) has shown that plasmons create solvated electrons in water. They showed that the yield of solvated electrons in water was increased more than 10 times for nanoparticle-decorated electrodes compared to smooth silver electrodes. Based […]
A new catalyst to slow down global warming
Phys.org September 2, 2022 An international team of researchers (Russia, USA – University of Notre Dame) has developed a new simplified method of producing industrial cobalt-nickel catalysts for carbon dioxide processing that makes the process simple and inexpensive. The catalysts are a bulk alloy with a porous surface and nanoscale grains that form foamy high-activity particles. Due to the structure and the synergistic interaction of Co with Ni, the catalysts are characterized by a more intense interaction with CO2 molecules and high stability. They focused on exploring the possibilities of full utilization of carbon dioxide, simplifying the production of effective […]