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Multifunctionality of silver closo-boranes

Author

Listed:
  • Mark Paskevicius

    (Aarhus University
    Curtin University)

  • Bjarne R. S. Hansen

    (Aarhus University)

  • Mathias Jørgensen

    (Aarhus University)

  • Bo Richter

    (Aarhus University)

  • Torben R. Jensen

    (Aarhus University)

Abstract

Silver compounds share a rich history in technical applications including photography, catalysis, photocatalysis, cloud seeding and as antimicrobial agents. Here we present a class of silver compounds (Ag2B10H10 and Ag2B12H12) that are semiconductors with a bandgap at 2.3 eV in the green visible light spectrum. The silver boranes have extremely high ion conductivity and dynamic-anion facilitated Ag+ migration is suggested based on the structural model. The ion conductivity is enhanced more than two orders of magnitude at room temperature (up to 3.2 mS cm−1) by substitution with AgI to form new compounds. Furthermore, the closo-boranes show extremely fast silver nano-filament growth when excited by electrons during transmission electron microscope investigations. Ag nano-filaments can also be reabsorbed back into Ag2B12H12. These interesting properties demonstrate the multifunctionality of silver closo-boranes and open up avenues in a wide range of fields including photocatalysis, solid state ionics and nano-wire production.

Suggested Citation

  • Mark Paskevicius & Bjarne R. S. Hansen & Mathias Jørgensen & Bo Richter & Torben R. Jensen, 2017. "Multifunctionality of silver closo-boranes," Nature Communications, Nature, vol. 8(1), pages 1-6, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15136
    DOI: 10.1038/ncomms15136
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