Sneed Brian T, Young Allison P, Tsung Chia-Kuang
Boston College Chemistry Department, Merkert Chemistry Center, 2609 Beacon St, Chestnut Hill, MA 02467, USA.
Nanoscale. 2015 Aug 7;7(29):12248-65. doi: 10.1039/c5nr02529j. Epub 2015 Jul 6.
The focus on surface lattice strain in nanostructures as a fundamental research topic has gained momentum in recent years as scientists investigated its significant impact on the surface electronic structure and catalytic properties of nanomaterials. Researchers have begun to tell a more complete story of catalysis from a perspective which brings this concept to the forefront of the discussion. The nano-'realm' makes the effects of surface lattice strain, which acts on the same spatial scales, more pronounced due to a higher ratio of surface to bulk atoms. This is especially evident in the field of metal nanoparticle catalysis, where displacement of atoms on surfaces can significantly alter the sorption properties of molecules. In part, the concept of strain-engineering for catalysis opened up due to the achievements that were made in the synthesis of a more sophisticated nanoparticle library from an ever-expanding set of methodologies. Developing synthesis methods for metal nanoparticles with well-defined and strained architectures is a worthy goal that, if reached, will have considerable impact in the search for catalysts. In this review, we summarize the recent accomplishments in the area of surface lattice-strained metal nanoparticle synthesis, framing the discussion from the important perspective of surface lattice strain effects in catalysis.
近年来，随着科学家们研究表面晶格应变对纳米材料表面电子结构和催化性能的重大影响，将其作为一个基础研究课题来关注的势头日益强劲。研究人员已开始从一个将这一概念置于讨论前沿的角度，讲述一个更完整的催化故事。纳米“领域”由于表面原子与体相原子的比例更高，使得作用于相同空间尺度的表面晶格应变效应更加显著。这在金属纳米颗粒催化领域尤为明显，其中表面原子的位移可显著改变分子的吸附特性。部分而言，催化应变工程的概念因在从不断扩展的方法集中合成更复杂的纳米颗粒库方面所取得的成就而得以开启。开发具有明确且应变结构的金属纳米颗粒的合成方法是一个值得追求的目标，一旦实现，将对催化剂的寻找产生重大影响。在本综述中，我们总结了表面晶格应变金属纳米颗粒合成领域的近期成果，从催化中表面晶格应变效应这一重要角度展开讨论。
