An Eco-Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions.
An Eco-Friendly, Tunable and Scalable Method for Producing Porous Functional Nanomaterials Designed Using Molecular Interactions.
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DOI：
10.1002/cssc.201700027
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发表时间：
2017-04-22
期刊：
影响因子：
8.4
通讯作者：
Patwardhan SV
中科院分区：
文献类型：
--
作者：
Manning JRH;Yip TWS;Centi A;Jorge M;Patwardhan SV
尽管模板化二氧化硅材料的合成有显著改进，但合成后纯化仍然非常昂贵，并且使得材料在工业上不可行。在这项研究中，通过开发一种快速室温溶液法来完全提取有机添加剂，解决了多孔生物二氧化硅的这个问题。使用元素分析和N2和CO2吸附，在一个单一的步骤中，既纯化和可控地定制生物启发二氧化硅的组成，孔隙率和表面化学的能力被证明。第一次使用分子动力学模拟提取，揭示了去除机制由表面电荷相互作用主导。这可以扩展到其他添加剂化学，从而使该方法更广泛地适用于其他材料。最后，新方法的环境效益进行了估计，并与以前的净化技术相比，表现出显着的改善可持续性。
Despite significant improvements in the synthesis of templated silica materials, post‐synthesis purification remains highly expensive and renders the materials industrially unviable. In this study this issue is addressed for porous bioinspired silica by developing a rapid room‐temperature solution method for complete extraction of organic additives. Using elemental analysis and N2 and CO2 adsorption, the ability to both purify and controllably tailor the composition, porosity and surface chemistry of bioinspired silica in a single step is demonstrated. For the first time the extraction is modelled using molecular dynamics, revealing that the removal mechanism is dominated by surface‐charge interactions. This is extended to other additive chemistry, leading to a wider applicability of the method to other materials. Finally the environmental benefits of the new method are estimated and compared with previous purification techniques, demonstrating significant improvements in sustainability.