Ag-containing¹ hydrophobic aluminosilicate aerogels capable of capturing I₂ were prepared by sol-gelation from Na, Al, and Si alkoxides using co-solvent exchange, Ag/Na ion exchange, solvent exchange, silylation-induced surface hydrophobization, and ambient-pressure drying. The Ag contents, Brunauer-Emmett-Teller (BET) surface areas, and pore size distributions of aerogels depended on the solvent of the co-solvent exchange step, with isopropanol affording higher Ag contents and lower BET surface areas than water. This behavior was ascribed to the reaction of isopropanol-insoluble NaOH in gel pores during Ag/Na exchange with aqueous AgNO₃ to form water-insoluble Ag₂O. The Ag-containing hydrophobic aluminosilicate aerogel modified with hexamethyldisilazane contained meso- and macropores and exhibited a maximum iodine capture capacity of 0.555 g-I/g-sorbent, a BET surface area of 172 m²/g, a specific pore volume of 1.29 cm³/g, and an average pore size of 23.4 nm.

使用共溶剂交换、Ag/Na 离子交换、溶剂交换、硅烷化诱导的表面疏水化和环境-通过溶胶凝胶化从 Na、Al 和 Si 醇盐制备能够捕获 I ₂的含银¹疏水性铝硅酸盐气凝胶。压力干燥。气凝胶的 Ag 含量、Brunauer-Emmett-Teller (BET) 表面积和孔径分布取决于共溶剂交换步骤的溶剂，异丙醇提供比水更高的 Ag 含量和更低的 BET 表面积。这种行为归因于在 Ag/Na 与水性 AgNO ₃交换过程中，不溶于异丙醇的 NaOH 在凝胶孔中反应形成不溶于水的 Ag ₂O. 六甲基二硅氮烷改性的含银疏水性铝硅酸盐气凝胶含有中孔和大孔，最大碘捕获能力为 0.555 gI/g-吸附剂，BET 表面积为 172 m ² /g，比孔体积为 1.29 cm ³ /g，平均孔径为23.4 nm。