The sample without thermal treatment has loose framework and poor ordered mesostructure.
未经过煅烧的样品骨架缩聚不完全，介孔的有序性差；
TMOS and sodium silicate led to iron-containing silicas with ordered two-dimensional hexagonal mesoporous structure, and vesicle mesostructure was obtained using TEOS as silica precursor.
正硅酸甲酯和硅酸钠形成有序的二维六方相的介孔结构，而正硅酸乙酯形成了囊泡结构。
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