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Showing posts with the label Single-atom catalysts

Efficient Electrochemical CO2 Reduction via Nickel−Nitrogen Sites Hollow Carbon Spheres

After 19 th century, carbon dioxide (CO 2 ) and other green house gases has increased more amount of heat which have “trapped” in the earth's atmosphere and automatically global temperature rises. It causes significant climatic changes as well as the amount and frequency of precipitation. It can also increases in extreme weather conditions such as flooding, droughts, hurricanes, and wildfires. It also effects in ecosystem changes, rising sea levels, and food insecurity. Carbon dioxide can be emitted from energy process raw materials, run computers, that have been used at factories and other facilities to run machines, heat and cool buildings, which are connected to the internet, etc. CO 2 emissions can also be directly caused by leakage in the use of petroleum production, other industrial process and chemical reactions during the manufacturing process. Indirect emissions are observed from the energy production off-site, such as the emissions created by the power plants which faci...

Recent Trends in Mössbauer Techniques

Rudolf Mössbauer has discovered the Mössbauer effect and was honored the Nobel Prize in 1961, based on that the Mössbauer spectroscopy was obtained [ 1 ]. The discovery of the Mössbauer spectroscopy effect is the recoilless (also called: recoil-free) nuclear resonance emission/absorption of γ-rays. In the case of a nuclear transition, the de-excited nucleus is normally recoiled by the momentum of the γ-photon emitted, which makes its resonance absorption impossible by another ground-state nucleus of the same type. However, in solids, recoilless photons can be emitted (and reabsorbed by another ground-state nucleus) with some probability. Mössbauer spectroscopy has utilized in numerous interdisciplinary research applications from core subjects (physics, chemistry, and biology). This spectroscopic technique will be continued to make significant contributions based upon the 2004-2005’s analysis of soil from the Mars surface with spectra collected in-situ [ 2 ]. Figure 1.  Mössbauer ...