4.8 Article

Interconnection of organic-inorganic hybrid nano-building blocks towards thermally robust mesoporous structures

Journal

NANOSCALE
Volume 13, Issue 26, Pages 11446-11454

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nr08689d

Keywords

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Funding

  1. JSPS KAKENHI [JP20K15368]
  2. JSPS Core-to-Core Program
  3. MEXT Leading Initiative for Excellent Young Researchers
  4. Foundation for the Promotion of Ion Engineering
  5. International Network on Polyoxometalate Science at Hiroshima University
  6. Izumi Science and Technology Foundation [2019-J-112]

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The study introduces a new method for synthesizing organic-inorganic hybrid nanoparticles through intercalated acrylate polymerization, resulting in thermally robust mesoporous structures that can be formed at 200 degrees Celsius. Electrochemical characterization indicates improved diffusion of molecules/solvent in these materials.
The use of organic-inorganic hybrid nanoparticles will enable a control of the characteristics of both the nanoparticles and constructed fine structures. In this study, we report the synthesis of acrylate-intercalated layered manganese, cobalt, and nickel hydroxide nanoparticles and their assembly into ordered mesoporous structures. Polymerization of the intercalated acrylates takes place by means of a radical initiator. The formed organic network improved the thermal stability of the layered hydroxides, which results in thermally robust mesoporous structures. Additionally, it is found that the polymerization can be initiated and progressed at 200 degrees C without any initiators for the layered nickel hydroxide system. This allows for the scalable solid-state thermal polymerization of intercalated acrylates and the formation of thermally robust hierarchically ordered meso/macroporous powders as well as mesoporous films. The electrochemical characterization reveals that the thermally robust mesoporous films having regulated mesopores allow for the effective diffusion of molecules/solvent compared with the films having collapsed mesoporous structures.

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