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      2D Network overtakes 3D for photocatalytic hydrogen evolution

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      Author(s)
      Ahmad, Aliyu Aremu
      Türkan Gamze Ulusoy, Ghobadi
      Özbay, Ekmel
      Karadaş, Ferdi
      Date
      2022-07-18
      Source Title
      Chemical Communications
      Electronic ISSN
      1359-7345
      Publisher
      Royal Society of Chemistry
      Volume
      67
      Issue
      58
      Pages
      9341 - 9344
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      3-Dimensional (3D) cyanide coordination polymers, typically known as Prussian blue Analogues (PBAs), have received great attention in catalysis due to their stability, easily tuned metal sites, and porosity. However, their high crystallinities and relatively low number of surface-active sites significantly hamper their intrinsic catalytic activities. Herein, we report the utilization of a 2-dimensional (2D) layered cobalt tetracyanonickelate, [Co–Ni], for the reduction of protons to H2. Relying on its exposed facets, layered morphology, and abundant surface-active sites, [Co–Ni] can efficiently convert water and sunlight to H2 in the presence of a ruthenium photosensitizer (Ru PS) with an optimal evolution rate of 30 029 ± 590 μmol g−1 h−1, greatly exceeding that of 3D Co–Fe PBA [Co–Fe] and Co–Co PBA [Co–Co]. Furthermore, [Co–Ni] retains its structural integrity throughout a 6 hour photocatalytic cycle, which is confirmed by XPS, PXRD, and Infrared analysis. This recent work reveals the excellent morphologic properties that promote [Co–Ni] as an attractive catalyst for the hydrogen evolution reaction (HER).
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      http://hdl.handle.net/11693/111399
      Published Version (Please cite this version)
      https://doi.org/10.1039/D2CC02912J
      Collections
      • Department of Chemistry 707
      • Department of Electrical and Electronics Engineering 4016
      • Department of Physics 2551
      • Institute of Materials Science and Nanotechnology (UNAM) 2258
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