Different morphologies of ZnO nanorods and their sensing property

被引：161

作者：

Bai Shouli ^{[1
]}

Chen Liangyuan ^{[2
]}

Li Dianqing ^{[1
]}

Yang Wensheng ^{[1
]}

Yang Pengcheng ^{[1
]}

Liu Zhiyong ^{[1
]}

Chen Aifan ^{[1
]}

Chung Chiun Liu ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 146卷 / 01期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

One-dimensional ZnO; Morphology; NO2; VOCs; Sensing property; GROWTH; SENSOR;

D O I：

10.1016/j.snb.2010.02.011

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Different morphologies of one-dimensional (1D) ZnO nanocrystals were successfully synthesized by hydrothermal process with cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SOS) and polyethylene glycol (PEG) assisted. The morphology and structure of crystals were characterized by scanning electron microscopy (SEM). X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis. Gas sensors have been fabricated using the 10 ZnO crystals to examine the responses to NO2 and CO gases over a range of operating temperature from 150 to 450 C. The effect of surfactant and calcination condition, as well as morphologies obtained by different synthesized methods on sensing property were systematically investigated. The response of NO2 was greatly enhanced from 239.5 to 470.0 by the addition of 5% cadmium element as dopant during CTAB-assisted low temperature hydrothermal process. The effect of Cd loading on the gas sensing property and the sensing mechanism were discussed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：129 / 137

页数：9

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