Photochemical fabrication of silver nanostructures at the solid-liquid interface using a recyclable photosensitized reduction process.
Photochemical fabrication of silver nanostructures at the solid-liquid interface using a recyclable photosensitized reduction process.
复制标题
DOI：
10.1039/b917981j
复制
发表时间：
2010-01
期刊：
影响因子：
--
通讯作者：
M. Sakamoto;S. S. Kim-S.;Hirotoshi Furusho;T. Majima
中科院分区：
文献类型：
--
作者：
M. Sakamoto;S. S. Kim-S.;Hirotoshi Furusho;T. Majima
通过金属源的光敏还原的金属纳米结构的光化学合成是在各种环境中的强大方法，因为光可以选择性地促进所需的反应而不破坏周围环境。该方法的缺点是大多数有机光敏剂是一次性的，并且在光化学反应期间消耗，因此通常需要比金属源的光敏剂量大得多的光敏剂量，因此，光敏化还原方法在敏化剂方面是浪费的。在本工作中，我们提出了一种新的光化学合成方法，使用可回收的光敏剂，并将其应用于制造银纳米结构的固-液界面。银离子在固液界面的光敏还原导致独特的银纳米结构（纳米线或板）的形成，而无需使用模板或稳定剂。讨论了溶剂极性、基质与晶相之间的相互作用等外部因素与薄膜形貌的关系。
Photochemical synthesis of metal nanostructures through photosensitized reduction of metal sources is a powerful method in a wide variety of environments, because light can selectively promote the desired reaction without damaging the surrounding environment. A drawback of the method is that most organic photosensitizers are disposable and consumed during the photochemical reactions and as a consequence a much larger amount of photosensitizer than that of the metal source is usually required, and therefore, the photosensitized reduction method is wasteful in terms of the sensitizer. In the present work, we propose a new photochemical synthetic method using a recyclable photosensitizer and applied it to fabricate Ag nanostructures at the solid-liquid interface. The photosensitized reduction of Ag ion at the solid-liquid interface resulted in the formation of unique Ag nanostructures (nanowires or plates) without the use of templates or stabilizing agents. The relation between the morphology and several external contributing factors, such as solvent polarity and interaction between the substrate and crystal phase, was discussed.