Kawamura Go, Okuno Teruhisa, Muto Hiroyuki, Matsuda Atsunori
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan.
Nanoscale Res Lett. 2012 Jan 5;7(1):27. doi: 10.1186/1556-276X-7-27.
Nanocrystallized SiO2-TiO2 with tubular mesopores was prepared via the sol-gel technique. Gold was deposited in the tubular mesopores of the nanocrystallized SiO2-TiO2. The shape of the gold was varied from one-dimensional [1-D] to zero-dimensional [0-D] nanostructures by an increase in TiO2 content and ultraviolet [UV] irradiation during gold deposition. 1-D gold nanostructures [GNSs] were mainly obtained in the mesopores when a small amount of TiO2-containing mesoporous SiO2-TiO2 was used as a template, whereas the use of a template containing a large amount of TiO2 led to the formation of shorter 1-D or 0-D GNSs. UV irradiation also resulted in the formation of 0-D GNSs.PACS: 06.60.Jn (sample preparation); 81.07.Gf (nanowires); 81.16.Be (chemical synthesis methods).
通过溶胶-凝胶技术制备了具有管状介孔的纳米晶SiO₂-TiO₂。金沉积在纳米晶SiO₂-TiO₂的管状介孔中。在金沉积过程中，通过增加TiO₂含量和紫外线（UV）照射，金的形状从一维[1-D]纳米结构变为零维[0-D]纳米结构。当使用少量含TiO₂的介孔SiO₂-TiO₂作为模板时，主要在介孔中获得一维金纳米结构（GNSs），而使用含有大量TiO₂的模板会导致形成较短的一维或零维GNSs。紫外线照射也会导致零维GNSs的形成。
06.60.Jn（样品制备）；81.07.Gf（纳米线）；81.16.Be（化学合成方法）
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