ZnO nanorod gas sensor for NO2 detection

被引：73

作者：

Liu, Fang-Tso ^{[1
]}

Gao, Shiang-Fu ^{[1
]}

Pei, Shao-Kai ^{[1
]}

Tseng, Shih-Cheng ^{[1
]}

Liu, Chin-Hsin J. ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 106, Taiwan

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2009年 / 40卷 / 05期

关键词：

Zinc oxide; Nanorod; Gas sensor; NO2; OPTICAL-PROPERTIES; THIN-FILMS; PHOTOLUMINESCENCE; GROWTH;

D O I：

10.1016/j.jtice.2009.03.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Vertically aligned ZnO nanorod arrays are prepared by a hydrothermal method with zinc acetate and hexamethylenetetramine, and used for NO2 gas sensing. The NO2 sensor based on nanorod arrays shows a higher sensitivity and lower operating temperature as compared to the sensor based on the ZnO film prepared by ultrasonic spray pyrolysis. The enhanced sensitivity is attributed to the higher aspect ratio of the nanorod structure. The response of the ZnO nanorod sensor is linearly proportional to the NOD concentration in the 0.2-5.0 ppm range, and the sensitivity of the sensor increases with the length of the ZnO nanorod. (C) 2009 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：528 / 532

页数：5

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