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A Simple Approach To Develop Tailored Mesoporosity in Nanostructured Heteropolysalts

机译:一种简单的方法,可以在纳米结构杂交中发育量身定制的介体

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摘要

In this study, we describe a very simple approach to the development of tailored mesoporosity in any nanostructured heteropolysalt with control over both the mesoporous volume and the pore size. This approach, which consists in the treatment of a solid microporous precursor with a basic agent, has been tested on the ammonium salt of the Keggin-type [PMo_(12)O_(40)]~(3-) heteropolyanion and constitutes a novel procedure for the preparation of mesoporous solids with no precedents. The results obtained in this study allow two main conclusions to be drawn: 1) the micro- and mesoporous structures in the heteropolysalt nanoparticles are independent from each other and 2) the development of mesoporosity in the solid material must be related to a process of alkaline degradation within the core of the nanocrystals that aggregate into the particles. These results afford valuable additional information to the present model of porosity that has been established for heteropolysalts.
机译:在这项研究中,我们描述了一种非常简单的方法,可以在任何纳米结构的杂多元在介孔体积和孔径上进行控制。 这种方法在于用碱性剂处理固体微孔前体,已经在Keggin型[PMO_(12)o_(40)]〜(3-)杂多阳离子的铵盐上测试并构成新颖 制备中孔固体的步骤,没有先例。 本研究中获得的结果允许绘制的两个主要结论:1)杂多元纳米粒子中的微孔和中孔结构彼此独立,2)在固体材料中的介孔率的发展必须与碱性的方法有关 纳米晶体的核心内聚集成颗粒的核心。 这些结果提供了对为异质建立的孔隙率模型提供了有价值的额外信息。

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