Shape-Controlled Synthesis of Polyhedral Nanocrystals and Their Facet-Dependent Properties
Shape-Controlled Synthesis of Polyhedral Nanocrystals and Their Facet-Dependent Properties
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DOI：
10.1002/adfm.201101784
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发表时间：
2012-01-11
影响因子：
19
通讯作者：
Lin, Po-Heng
中科院分区：
文献类型：
--
作者：
Huang, Michael H.;Lin, Po-Heng
具有良好形貌控制的无机多面体纳米晶体的生长给合成带来了巨大的挑战，特别是当需要开发合成方案来制备具有系统形状演变的纳米晶体时。纳米晶体具有良好的尺寸和形状控制，有利于其自组装堆积结构的形成，并为研究其与面相关的物理和化学性质提供了机会。在这篇专题文章中，重点介绍了具有系统形状演变的纳米晶体合成的最新进展。用来实现这种形态变化的反应条件提供了对纳米晶生长机制的洞察。还提出了一种利用结构良好的纳米晶核制备的新型多面体核壳异质结构。考察并讨论了纳米晶的面相关光催化活性、分子吸附、催化性质和电学性质。通过不断努力合成具有明确结构的纳米晶体并研究其平面选择性能，可以获得性能和功能增强的纳米材料。
Growth of inorganic polyhedral nanocrystals with excellent morphology control presents significant synthetic challenges, especially when the development of synthetic schemes to make nanocrystals with systematic shape evolution is desired. Nanocrystals with fine size and shape control facilitate formation of their self-assembled packing structures and offer opportunities for examination of their facet-dependent physical and chemical properties. In this Feature Article, recent advances in the synthesis of nanocrystals with systematic shape evolution are highlighted. The reaction conditions used to achieve this morphology change offer insights into the growth mechanisms of nanocrystals. A novel class of polyhedral coreshell heterostructures fabricated using structurally well-defined nanocrystal cores is also presented. Facet-dependent photocatalytic activity, molecular adsorption, and catalytic and electrical properties of nanocrystals have been examined and are discussed. Nanomaterials with enhanced properties and functionality may be obtained through continuous efforts in the synthesis of nanocrystals with well-defined structures and investigation of their plane-selective properties.