Publications by authors named "Y Nishibayashi"

We have recently achieved a highly effective ammonia formation from dinitrogen using samarium diiodide and water under ambient reaction conditions. However, further research is needed to establish a carbon-free green ammonia production route without carbon dioxide emissions. In this study, we have developed a novel molybdenum-catalyzed nitrogen fixation method using a combination of zero-valent metal powders as reductants and alcohols or H2O as a proton source under ambient reaction conditions.

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Optically accessible spin-active nanomaterials are promising as quantum nanosensors for probing biological samples. However, achieving bioimaging-level brightness and high-quality spin properties for these materials is challenging and hinders their application in quantum biosensing. Here, we demonstrate bright fluorescent nanodiamonds (NDs) containing 0.

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Ammonia (NH) is industrially produced from dinitrogen (N) and dihydrogen (H) by the Haber-Bosch process, although H is prepared from fossil fuels, and the reaction requires harsh conditions. On the other hand, microorganisms have fixed nitrogen under ambient reaction conditions. Recently, well-defined molecular transition metal complexes have been found to work as catalyst to convert N into NH by reactions with chemical reductants and proton sources under ambient reaction conditions.

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Article Synopsis
  • Dimolybdenum complexes using a specific pincer ligand, designed through density functional theory (DFT) calculations, were developed to study the process of breaking down nitrogen bonds.
  • These complexes efficiently catalyze the formation of ammonia from dinitrogen when paired with samarium diiodide as a reducing agent and water as a source of protons.
  • The reactions occur successfully under normal ambient conditions, highlighting the effectiveness of the new dimolybdenum complexes in ammonia synthesis.
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Article Synopsis
  • Researchers developed a new molybdenum complex that utilizes a special ligand based on pyridine for catalyzing reactions.
  • This complex effectively produces ammonia from dinitrogen using samarium diiodide and water at normal conditions, achieving up to 3580 equivalents of ammonia per molybdenum atom.
  • The new design of the complex showed significantly improved catalytic performance, being ten times more effective than its previous version.
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