Gas sensing properties of CuO nanorods synthesized by a microwave-assisted hydrothermal method

被引：202
|
作者：
Yang, Chao [1 ]
Su, Xintai [1 ]
Xiao, Feng [1 ]
Jian, Jikang [1 ,2 ]
Wang, Jide [1 ]
机构：
[1] Xinjiang Univ, Minist Key Lab Oil & Gas Fine Chem, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China
[2] Xinjiang Univ, Coll Phys Sci & Technol, Urumqi 830046, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2011年 / 158卷 / 01期
关键词：
Nanorods; Copper oxide; Gas sensors; P-type semiconductor; PERFORMANCE; NANOWIRES; PHASE; SIZE; CU2O;
D O I：
10.1016/j.snb.2011.06.024
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
P-type CuO nanorods with the breadth of 15-20 nm and the length of 60-80 nm, have been synthesized using a microwave-assisted hydrothermal (MH) method. The band gap of CuO nanorods was calculated to be 2.75 eV based on the UV-vis absorption spectrum of the product. The gas sensing property of the CuO nanorods to several organic vapors was tested in temperatures ranging from 160 degrees C to 300 degrees C. The response of the CuO sensor to ethanol (1000 ppm) was 9.8 at the working temperature of 210 degrees C. The response time and the recovery time were within the range of 13-42s and 17-51s, respectively. Further measurements exhibited stronger response to ethanol than to other target gases. The enhanced gas sensing performance of the sensor to ethanol may be attributed to the small size of the CuO particles. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：299 / 303
页数：5
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