2 emissions. Since CO
2 is thermodynamically stable, efficient catalysts are needed to reduce the energy consumption in the process.
The single-atom catalysts immobilized on nitrogen-doped carbon supports (M-N/C) have been widely used for CO
2 electrocatalytic reduction reaction due to their high atom utilization efficiency.
Recently, a research team led by Prof. LIU Licheng from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences (CAS) proposed a two-step amination strategy to regulate the electronic structure of M-N/C catalysts (M=Ni, Fe, Zn) and enhance the intrinsic activity of CO
2 electrocatalytic reduction.
4/C was aminated by annealing with carbamide in NH
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A POSTECH-KAIST joint research team has successfully developed a technique to reach near-unity efficiency of SHEL by using an artificially-designed metasurface.
Professor Junsuk Rho of POSTECH s departments of mechanical engineering and chemical engineering, and Ph.D. candidate Minkyung Kim and Dr. Dasol Lee of Department of Mechanical Engineering in collaboration with Professor Bumki Min and Hyukjoon Cho of the Department of Mechanical Engineering at KAIST have together proposed a technique to enhance the SHEL with near 100% efficiency using an anisotropic metasurface. For this, the joint research team designed a metasurface that transmits most light of one polarization and reflects the light from the other, verifying that the SHEL occurs in high-frequency region. These research findings were recently published in the February issue of Laser and Photonics Reviews, an authoritative journal in optics.
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IMAGE: A team from the Max Planck Institute in Heidelberg excites nuclei of iron atoms with a flash of X-ray light and then sends a second such flash onto the sample. view more
Credit: MPI for Nuclear Physics
From atomic clocks to secure communication to quantum computers: these developments are based on the increasingly better control of the quantum behaviour of electrons in atomic shells with the help of laser light. Now, for the first time, physicists at the Max Planck Institute for Nuclear Physics in Heidelberg have succeeded in precisely controlling quantum jumps in atomic nuclei using X-ray light. Compared with electron systems, nuclear quantum jumps are extreme - with energies up to millions of times higher and incredibly short zeptosecond processes. A zeptosecond is one trillionth of a billionth of a second. The rewards include profound insight into the quantum world, ultra-precise nuclear clocks, and nuclear batteries with enormous storage capacity. Th
At the start of the COVID-19 pandemic, we switched up our usual content to bring viewers reliable coronavirus info from the experts. One year later, we re checking back in with some of those experts and asking, what do we know now that we didn t back then? : https://youtu.be/41l4DBdK7Bw.