Programmed Fabrication of Metal Oxides Nanostructures Using Dual Templates to Spatially Disperse Metal Oxide Nanocrystals

被引：41

作者：

Zhang, Le-Sheng ^{[1
]}

Jiang, Ling-Yan ^{[1
]}

Chen, Chao-Qiu ^{[1
]}

Li, Wei ^{[1
]}

Song, Wei-Guo ^{[1
]}

Guo, Yu-Guo ^{[1
]}

机构：

[1] Chinese Acad Sci, BNLMS, Beijing 100190, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ONE-POT SYNTHESIS; CARBON NANOTUBES; ANODE MATERIAL; MESOPOROUS SNO2; HOLLOW SPHERES; GAS SENSORS; COMPOSITE; NANOPARTICLES; MICROSPHERES; CEO2;

D O I：

10.1021/cm902973e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multiwalled carbon nanotubes (MWCNTs) and metal oxide composites, including MWCNTs@SnO2, MWCNTs@ZrO2, MWCNTs@Fe2O3, as well as corresponding metal oxides (MO) hollow structure consisted of SnO2, ZrO2, or CeO2 metal oxide single crystals, respectively, are produced using porous carbonaceous coating and multiwalled carbon nanotube core as dual templates. The synthesis procedure involves programmed steps in which the templates are removed in a controlled sequence. The carbonaceous layer coated on MWCNTs provides porous surface for the adsorption of metal oxide precursors and a buffer zone to help the dispersion of metal oxide nanocrystals. The MWCNTs provide mechanical supports during the whole process before they are removed. MWCNTs@MO nanocomposite are obtained by the removal of the porous carbonaceous layer, and metal oxides hollow structure is produced after the removal of the MWCNTs. MWCNTs@SnO2 nanocomposite shows excellent lithium storage property its anode material for lithium-ion batteries, and SnO2 hollow structure shows high sensitivity and response rate as gas sensor material.

引用

页码：414 / 419

页数：6

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