One-step nanocasting synthesis of highly ordered single crystalline indium oxide nanowire arrays from mesostructured frameworks

被引:212
作者
Yang, HF [1 ]
Shi, QH [1 ]
Tian, BZ [1 ]
Lu, QY [1 ]
Gao, F [1 ]
Xie, SH [1 ]
Fan, J [1 ]
Yu, CZ [1 ]
Tu, B [1 ]
Zhao, DY [1 ]
机构
[1] Fudan Univ, Dept Chem, Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
关键词
D O I
10.1021/ja034005i
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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. Copyright © 2003 American Chemical Society.
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页码:4724 / 4725
页数:2
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