Preparation of Ordered Mesoporous Au using Double Gyroid Mesoporous Silica KIT‐6 via a Seed‐Mediated Growth Process,Chemistry - An Asian Journal

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Preparation of Ordered Mesoporous Au using Double Gyroid Mesoporous Silica KIT‐6 via a Seed‐Mediated Growth Process
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-11-15 , DOI: 10.1002/asia.201801455
Yuta Shimasaki ₁ , Masaki Kitahara ₁ , Miho Shoji ₁ , Atsushi Shimojima ₁ , Hiroaki Wada ₁ , Kazuyuki Kuroda _{1,

2}

Affiliation

Ordered mesoporous Au was prepared using double gyroid (cubic Ia‐3d) mesoporous silica KIT‐6 as a template. The Au frameworks were formed within the template via a seed‐mediated growth process. Au nanoparticles were initially prepared as seeds within the mesopores, and subsequently, they were grown under mild and controlled reducing conditions. The transmission electron micrographs and scanning electron micrographs of mesoporous Au after the removal of the template revealed the formation of mesoporous Au replicas. The small‐angle X‐ray scattering pattern of mesoporous Au reveals that the obtained mesoporous Au has a cubic I4₁32 mesostructure, which is different from that of the original template, implying that Au was deposited within only one mesochannel of the two interconnected ones. The seed‐mediated growth process is a key factor in the successful formation of ordered mesoporous Au using a mesoporous silica template. Our preparative method can serve as a guide for further development of synthetic and materials chemistry of mesoporous Au.

中文翻译：

用双介孔介孔二氧化硅KIT-6通过种子介导的生长过程制备有序介孔金

有序介孔金是使用双螺旋形（立方Ia-3d）介孔二氧化硅KIT-6作为模板制备的。Au框架是通过种子介导的生长过程在模板内形成的。最初将Au纳米颗粒制备为中孔内的种子，然后在温和且受控的还原条件下生长它们。除去模板后，介孔Au的透射电子显微照片和扫描电子显微照片揭示了介孔Au复制品的形成。介孔金的小角度X射线散射图表明，所得介孔Au具有立方的I4 ₁ 32介孔结构与原始模板的介孔结构不同，这意味着Au沉积在两个相互连接的介孔的一个介孔中。种子介导的生长过程是使用介孔二氧化硅模板成功形成有序介孔金的关键因素。我们的制备方法可作为进一步发展介孔金的合成和材料化学的指南。

更新日期：2018-11-15

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