One-Step Nanocasting Synthesis of Highly Ordered Single Crystalline Indium Oxide Nanowire Arrays from Mesostructured Frameworks

详细信息    查看全文

• 作者：Haifeng Yang ; Qihui Shi ; Bozhi Tian ; Qingyi Lu ; Feng Gao ; Songhai Xie ; Jie Fan ; Chengzhong Yu ; Bo Tu ; and Dongyuan Zhao
• 刊名：Journal of the American Chemical Society
• 出版年：2003
• 出版时间：April 23, 2003
• 年：2003
• 卷：125
• 期：16
• 页码：4724 - 4725
• 全文大小：93K
• 年卷期：v.125,no.16(April 23, 2003)
• ISSN：1520-5126

文摘

A one-step nanocasting route has been demonstrated to prepare highly ordered single-crystal indium oxide nanowire (IONW) arrays with mesostructured frameworks. Unlike the reported multistep nanocasting process (synthesis of mesoporous materials, and then incorporation of precursors and formation of inorganic frameworks), a highly ordered mesostructured surfactant-silica monolith with low external surface serves as both the template and the reducing agent and makes the formation of single-crystal IONWs in its channels easily in one step by using normal In(NO₃)₃ as an inorganic precursor. After silica is removed, highly ordered uniform single-crystal IONW arrays with hexagonal (p6mm) or cubic (Ia3d) mesostructures are derived. These new materials are studied by XRD, SEM, TEM, N₂ adsoption, and UV spectrum. Furthermore, this one-step nanocasting synthesis route is a generalized method and can be used to synthesized a highly ordered mesoporous silica monolith with metal oxide nanocrystals in its channels. To the best of our knowledge, this is the first report of a single crystalline mesostructured In₂O₃ framework.