Preparation of Band Gap Tunable SnO2 Nanotubes and Their Ethanol Sensing Properties

被引：104

作者：

Shi, Liang ^{[1
]}

Lin, Hailin ^{[2
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China

[2] ZhongKai Univ Agr Technol, Dept Chem & Engn, Guangzhou 510225, Guangdong, Peoples R China

来源：

LANGMUIR | 2011年 / 27卷 / 07期

基金：

中国国家自然科学基金;

关键词：

TIN OXIDE NANOWIRES; OPTICAL-PROPERTIES; SOLUTION-PHASE; ION BATTERIES; GROWTH; NANORODS; FABRICATION; ROUTE; WELL; NANOCRYSTALLITES;

D O I：

10.1021/la104529h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

SnO2 nanotubes have been prepared via a facile hydrothermal method at low temperatures using polycarbonate (PC) membrane as a hard template. The walls of as-prepared SnO2 nanotubes are composed of fine nanocrysalline particles and the size of SnO2 nanocrystals could be modified by changing reaction temperature. Formation mechanism of SnO2 nanotubes is also discussed according to the experimental results. Cathodoluminescence properties of the SnO2 product indicated that the band gap of the nanostructures increase from 3.75 eV with a particle size 5.6 nm to 3.99 eV with a particle size 3.3 nm. The as-prepared SnO2 nanotubes were found to show enhanced gas-sensing activity and may be used as a candidate for the fabrication of gas sensors.

引用

页码：3977 / 3981

页数：5

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