Hierarchical structured mesoporous Co₃O₄/SiO₂ composites have been fabricated by the in-situ transformation of cobalt nanocrystals in the mesoporous silica. The hierarchical porous composites show good structural stability during the thermal treating process and demonstrate high crystallinity after phase transformation. The highly crystalline Co₃O₄/SiO₂ composite has uniform mesopores and exhibits good adsorption ability. This method offers a promising way to the design of hierarchical structured mesoporous materials with highly crystalline framework.

中文翻译：

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Co纳米晶体相变的分层结构Co ₃ O ₄ / SiO ₂复合材料

通过在介孔二氧化硅中原位转变钴纳米晶体，制备出了具有层次结构的介孔Co ₃ O ₄ / SiO ₂复合材料。分层多孔复合材料在热处理过程中显示出良好的结构稳定性，并在相变后表现出高结晶度。高结晶度的Co ₃ O ₄ / SiO ₂复合材料具有均匀的中孔并且显示出良好的吸附能力。该方法为设计具有高度结晶骨架的分层结构介孔材料提供了一种有希望的方法。