Uniform ZnO nanorods can be used to improve the response of ZnO gas sensor

被引：69

作者：

Xu, Jiaqiang ^{[1
]}

Zhang, Yuan ^{[2
]}

Chen, Yuping ^{[3
]}

Xiang, Qun ^{[1
]}

Pan, Qingyi ^{[1
]}

Shi, Liyi ^{[2
]}

机构：

[1] Shanghai Univ, Dept Chem, Coll Sci, Shanghai 200444, Peoples R China

[2] Shanghai Univ, Nanosci & Technol Res Ctr, Shanghai 200444, Peoples R China

[3] Nanjing Univ, Dept Chem, Nanjing 210039, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2008年 / 150卷 / 01期

关键词：

zinc oxide; nanorods; gas sensor; stability;

D O I：

10.1016/j.mseb.2008.01.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Uniform ZnO nanorods were synthesized in high-yield by using metal zinc powder as zinc source via a one-step facile hydrothermal process under mild conditions, in which cetyltrimethylammonium bromide (CTAB) with ordered chain structures acted as the conversion of Zn powder into ZnO nanorods. The characterization results show that the as-synthesized products were structurally uniform and have diameters of 40-80 nm. Gas sensing properties studies show that ZnO nanorods exhibit more excellent response and stability to ethanol than that of ZnO nanoparticles. After working continuously for 50 days, the sensitivity of ZnO nanorods still retained 7.3, whereas, the ZnO nanoparticles showed only 1.0. The facile preparation method and the improved properties derived from typical rods-like nanostructure are significant for the future applications of gas sensing material. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：55 / 60

页数：6

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