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Direct Evidence of Breakdown of Spin Statistics in Ion-Atom Charge Exchange Collisions.
Phys Rev Lett
October 2024
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Recent experimental studies have questioned the validity of spin statistics assumptions, particularly in charge exchange processes occurring in atomic MeV collisions. Here, we study spin-resolved single electron capture processes in collisions between C^{3+} ions and helium within an energy range of 1.25-400 keV/u.
View Article and Find Full Text PDFHigh-Spin [Fe] Cluster Capable of Pnictogen Atom Capture.
J Am Chem Soc
September 2024
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.
Using a new hexanucleating anildophosphine ligand LH (1,3,5-CH(NHCH-5-F-2-P(Bu))), the all-monovalent [Fe] compound (L)Fe () was isolated and characterized by X-ray diffraction analysis, SQUID magnetometry, Fe Mössbauer spectroscopy, and cyclic voltammetry. The molecular structure of reveals very close Fe-Fe distances of 2.3825(7), 2.
View Article and Find Full Text PDFElectrochemical Synthesis of Urea: Co-Reduction of Nitrite and Carbon Dioxide on Binuclear Cobalt Phthalocyanine.
Small
October 2024
International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Institute for Sustainable Energy, College of Sciences, Shanghai University, No. 99 Shangda Road, Shanghai, 200444, China.
Article Synopsis
- The study focuses on developing molecular catalysts with customizable atomic structures to enhance the electrochemical co-reduction of CO₂ and nitrite into urea.
- A binuclear cobalt phthalocyanine (biCoPc) catalyst was synthesized and showed a high Faradaic efficiency of 47.4% for urea production, surpassing many existing molecular catalysts.
- The research combines advanced spectroscopic methods and computational modeling to show how CO acts as an essential intermediate in the reduction process, highlighting the significance of molecular design in optimizing catalytic efficiency.
Gas-Phase Photocatalytic Coprocessing of CO - HO to Energy Products Promoted by the n,n-Junction InO@g-CN under VIS-Light.
ChemSusChem
November 2024
CIRCC, via Celso Ulpiani 27, 70126, Bari, Italy.
Carbon dioxide capture and utilization is a strategic technology for moving away from fossil-C. The conversion of CO into fuels demands energy and hydrogen that cannot be sourced from fossil-C. Co-processing of CO and water under solar irradiation will have a key role in the long-term for carbon-recycling and energy products production.
View Article and Find Full Text PDFSolution-phase sample-averaged single-particle spectroscopy of quantum emitters with femtosecond resolution.
Nat Mater
August 2024
Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
The development of many quantum optical technologies depends on the availability of single quantum emitters with near-perfect coherence. Systematic improvement is limited by a lack of understanding of the microscopic energy flow at the single-emitter level and ultrafast timescales. Here we utilize a combination of fluorescence correlation spectroscopy and ultrafast spectroscopy to capture the sample-averaged dynamics of defects with single-particle sensitivity.
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