標題: Fabrication and carbon monoxide sensing characteristics of mesostructured carbon gas sensors
作者: Liu, Chueh-Yang
Chen, Chia-Fu
Leu, Jih-Perng
Lu, Chih-Cheng
Liao, Kuan-Hsun
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Gas sensor;DEP;Mesoporous;CO;Ordered;Pore
公開日期: 4-十二月-2009
摘要: We demonstrated a micro-chemoresistive gas sensing device using mesoporous carbon as the sensitive film and immobilized by dielectrophoresis (DEP) process. The mesoporous materials were characterized by X-ray diffraction (XRD) patterns, N(2) adsorption-desorption isotherms, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). N(2) adsorption-desorption isotherms shows the specific surface area of 1200 m(2)/g, total pore volume is 1.2 cm(3)/g of the mesoporous carbon, and the pore size distribution of mesoporous carbon yields an average pore size of 3 nm. SEM images show a rod-like morphology and TEM images show a highly ordered pore channel with linear arrays. CO gas sensor properties were measured and the resulting sensitivities were 5.7, 6.8, 8.8, 11.6, and 37.6% for concentrations of 30, 45, 60, 75, and 90 ppm. respectively. Additionally, this sensor also exhibited high sensitivity and fast response times for CO gas. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.snb.2009.08.008
http://hdl.handle.net/11536/6319
ISSN: 0925-4005
DOI: 10.1016/j.snb.2009.08.008
期刊: SENSORS AND ACTUATORS B-CHEMICAL
Volume: 143
Issue: 1
起始頁: 12
結束頁: 16
顯示於類別:期刊論文


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