Maintaining the Structure of Templated Porous Materials for Reactive and High-Temperature Applications
Maintaining the Structure of Templated Porous Materials for Reactive and High-Temperature Applications
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DOI：
10.1021/la300517g
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发表时间：
2012-05-15
期刊：
影响因子：
3.9
通讯作者：
Stein, Andreas
中科院分区：
文献类型：
--
作者：
Rudisill, Stephen G.;Wang, Zhiyong;Stein, Andreas
纳米多孔和纳米结构材料对于先进的应用正变得越来越重要，例如，生物活性材料、催化材料、能量存储和转换材料、光子晶体、膜等。因此，它们暴露在各种恶劣的环境中，并经常经历有害的形态变化。本文重点介绍了在反应或高温条件下的材料限制和多孔材料--特别是三维有序大孔(3DOM)材料--的最新进展。例子包括需要形态变化的系统，以及在合成和加工过程中需要增加结构、表面积和整体材料完整性的系统。探索和讨论了结构修饰、组成变化和替代合成路线。通过空间分离将纳米颗粒隔离在多孔结构中，通过限制在更热稳定的主体中，通过施加保护面或粘结剂夹层，通过形成合金或固溶体，通过掺杂诱导溶质阻力，实现了热稳定性或结构稳定性的改善。
Nanoporous and nanostructured materials are becoming increasingly important for advanced applications involving, for example, bioactive materials, catalytic materials, energy storage and conversion materials, photonic crystals, membranes, and more. As such, they are exposed to a variety of harsh environments and often experience detrimental morphological changes as a result. This article highlights material limitations and recent advances in porous materials-three-dimensionally ordered macroporous (3DOM) materials in particular-under reactive or high-temperature conditions. Examples include systems where morphological changes are desired and systems that require an increased retention of structure, surface area, and overall material integrity during synthesis and processing. Structural modifications, changes in composition, and alternate synthesis routes are explored and discussed. Improvements in thermal or structural stability have been achieved by the isolation of nanoparticles in porous structures through spatial separation, by confinement in a more thermally stable host, by the application of a protective surface or an adhesive interlayer, by alloy or solid solution formation, and by doping to induce solute drag.