Unconventional hexagonal open Prussian blue analog structures

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 () and Zhanxi Fan ()
Additional contact information
Jinwen Yin: City University of Hong Kong, Kowloon
Jing Wang: China University of Chinese Academy of Sciences
Mingzi Sun: The Hong Kong Polytechnic University, Kowloon
Yajie Yang: Northeast Normal University
Jia Lyu: Chongqing University
Lei Wang: The Hong Kong Polytechnic University, Kowloon
Xinglong Dong: King Abdullah University of Science and Technology
Chenliang Ye: North China Electric Power University
Haibo Bao: Chinese Academy of Sciences
Jun Guo: City University of Hong Kong, Kowloon
Bo Chen: City University of Hong Kong, Kowloon
Xichen Zhou: City University of Hong Kong, Kowloon
Li Zhai: City University of Hong Kong, Kowloon
Zijian Li: City University of Hong Kong, Kowloon
Zhen He: City University of Hong Kong, Kowloon
Qinxin Luo: City University of Hong Kong, Kowloon
Xiang Meng: City University of Hong Kong, Kowloon
Yangbo Ma: City University of Hong Kong, Kowloon
Jingwen Zhou: City University of Hong Kong, Kowloon
Pengyi Lu: City University of Hong Kong, Kowloon
Yunhao Wang: City University of Hong Kong, Kowloon
Wenxin Niu: Chinese Academy of Sciences
Zijian Zheng: The Hong Kong Polytechnic University, Kowloon
Yu Han: King Abdullah University of Science and Technology
Daliang Zhang: Chongqing University
Shibo Xi: Jurong Island
Ye Yuan: Northeast Normal University
Bolong Huang: The Hong Kong Polytechnic University, Kowloon
Peng Guo: China University of Chinese Academy of Sciences
Zhanxi Fan: City University of Hong Kong, Kowloon

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract 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.

Date: 2025
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DOI: 10.1038/s41467-024-55775-w

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