Three-Dimensional Interconnected Silica Nanotubes Templated from Hyperbranched Nanowires

被引：16

作者：

Zhu, Jia ^{[2
]}

Peng, Hailin ^{[1
]}

Connor, Stephen T. ^{[3
]}

Cui, Yi ^{[1
]}

机构：

[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

[3] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

来源：

SMALL | 2009年 / 5卷 / 04期

关键词：

hyperbranched structures; nanotubes; nanowires; templates; NANOFLUIDIC CHANNELS; INORGANIC NANOTUBES; TRANSPORT; SEPARATION; NANOPORE;

D O I：

10.1002/smll.200801083

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hyperbranched PbSe nanowires (NW) as templates were exploited to produce 3D interconnected hyperbranched silicon dioxide (silica) nanotubes (NT). Hyperbranched PbSe, exhibiting 90° orientation between branches, were grown on Si (100) substrates using vapor transport growth. Zoomed-in scanning electron microscopy (SEM) images from different parts of the same hyperbranched PbSe show that middle of each branch are transparent, suggesting that PbSe is etched away. The low-magnification transmission image microscopy (TEM) image of PbSe reveal that the surface of NW is coated with silica and has variation in thickness on different faces, suggesting a shadow effect during coating. The NT is found to retain the orientation of the original PbSe hyperbranched NW, forming 3D interconnected hyperbranched tubes.

引用

页码：437 / 439

页数：3

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