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首页> 外文会议>China international conference on nanoscience and technology >A facile route using highly arrayed PMMA spheres as hard template for the fabrication of 3D ordered nanoporous MgO
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A facile route using highly arrayed PMMA spheres as hard template for the fabrication of 3D ordered nanoporous MgO

机译：使用高度排列的PMMA球作为硬模板的便捷路线，用于制造3D有序纳米多孔MgO

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Using magnesium nitrate as Mg source and regularly packed polymethyl methacrylate (PMMA) spheres synthesized via a combined strategy of emulsifier-free emulsion polymerization and water floating technique as hard template, we fabricated ordered nanoporous magnesium oxide. The synthesized PMMA and MgO samples were characterized by N2 adsorption-desorption, X-ray diffraction, high-resolution scanning electron microscopy, transmission electron microscopy, and selected area electron diffraction. It is shown that the synthesized PMMA spheres possessed a uniform diameter of ca. 284 nm and were in a highly ordered array, the MgO generated by using the PMMA-templating method exhibited polycrystallinity with three-dimensionally (3D) ordered pores. BET surface area of the synthesized MgO sample is 100.7 m2/g, pore volume is 0.46 cm3/g, wall thickness is 4~24 nm, and pore sizes are in the range of 10~120 nm. Such a 3D igh-surface-area nanoporous strongly basic MgO is useful in the applications of catalyst supports and acidic gas adsorbents.
机译：以无镁乳液聚合和水浮技术相结合的策略为基础，以硝酸镁为镁源，采用规则堆积的聚甲基丙烯酸甲酯（PMMA）球为硬模板，制备了有序的纳米多孔氧化镁。合成的PMMA和MgO样品通过N2吸附-解吸，X射线衍射，高分辨率扫描电子显微镜，透射电子显微镜和选定区域电子衍射进行表征。结果表明，合成的PMMA球体的直径均一。在284 nm处并以高度有序的阵列排列，使用PMMA模板法生成的MgO表现出具有3维（3D）有序孔的多晶性。合成的MgO样品的BET表面积为100.7 m2 / g，孔体积为0.46 cm3 / g，壁厚为4〜24 nm，孔径在10〜120 nm范围内。这种3D高表面积纳米多孔强碱性MgO可用于催化剂载体和酸性气体吸附剂的应用。

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