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<p>Prussian blue analogs (PBAs), as a classical kind of microporous materials, have attracted substantial interests considering their well-defined framework structures, unique physicochemical properties and low cost. However, PBAs typically adopt cubic structure that features small pore size and low specific surface area, which greatly limits their practical applications in various fields ranging from gas adsorption/separation to energy conversion/storage and biomedical treatments. Here we report the facile and general synthesis of unconventional hexagonal open PBA structures. The obtained hexagonal copper hexacyanocobaltate PBA prisms (H-CuCo) demonstrate large pore size and specific surface area of 12.32 Å and 1273 m<sup>2</sup> g<sup>−</sup><sup>1</sup>, respectively, well exceeding those (5.48 Å and 443 m<sup>2</sup> g<sup>−</sup><sup>1</sup>) of traditional cubic CuCo PBA cubes (C-CuCo). Significantly, H-CuCo exhibits much superior gas uptake capacity over C-CuCo toward carbon dioxide and small hydrocarbon molecules. Mechanism studies reveal that unsaturated Cu sites with planar quadrilateral configurations in H-CuCo enhance the gas adsorption performance.</p>

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Unconventional hexagonal open Prussian blue analog structures

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月3日

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  • Jinwen Yin,
  • Jing Wang,
  • Mingzi Sun,
  • Yajie Yang,
  • Jia Lyu,
  • Lei Wang,
  • Xinglong Dong,
  • Chenliang Ye,
  • Haibo Bao,
  • Jun Guo,
  • Bo Chen,
  • Xichen Zhou,
  • Li Zhai,
  • Zijian Li,
  • Zhen He,
  • Qinxin Luo,
  • Xiang Meng,
  • Yangbo Ma,
  • Jingwen Zhou,
  • Pengyi Lu,
  • Yunhao Wang,
  • Wenxin Niu,
  • Zijian Zheng,
  • Yu Han,
  • Daliang Zhang,
  • Shibo Xi,
  • Ye Yuan,
  • Bolong Huang,
  • Peng Guo,
  • Zhanxi Fan

摘要

Prussian blue analogs (PBAs), as a classical kind of microporous materials, have attracted substantial interests considering their well-defined framework structures, unique physicochemical properties and low cost. However, PBAs typically adopt cubic structure that features small pore size and low specific surface area, which greatly limits their practical applications in various fields ranging from gas adsorption/separation to energy conversion/storage and biomedical treatments. Here we report the facile and general synthesis of unconventional hexagonal open PBA structures. The obtained hexagonal copper hexacyanocobaltate PBA prisms (H-CuCo) demonstrate large pore size and specific surface area of 12.32 Å and 1273 m2 g−1, respectively, well exceeding those (5.48 Å and 443 m2 g−1) of traditional cubic CuCo PBA cubes (C-CuCo). Significantly, H-CuCo exhibits much superior gas uptake capacity over C-CuCo toward carbon dioxide and small hydrocarbon molecules. Mechanism studies reveal that unsaturated Cu sites with planar quadrilateral configurations in H-CuCo enhance the gas adsorption performance.