Chin. Phys. Lett.  2010, Vol. 27 Issue (5): 050701    DOI: 10.1088/0256-307X/27/5/050701
GENERAL |
Preparation and Humidity Sensing Properties of KCl/MCM-41 Composite
LIU Li1, KOU Li-Ying2, ZHONG Zhi-Cheng3, WANG Lian-Yuan1, LIU Li-Fang4, LI Wei1
1State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012 2The Eleventh High School of Changchun City, Changchun 130061 3College of Computer Science and Technology, Jilin University, Changchun 130012 4College Instrumentation and Electrical Engineering, Jilin University, Changchun 130026
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LIU Li, KOU Li-Ying, ZHONG Zhi-Cheng et al  2010 Chin. Phys. Lett. 27 050701
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Abstract KCl/mobil composition of matter-41 (MCM-41) composite has been synthesized via a heat-treating process and characterized by x-ray diffraction, high resolution transmission electron microscopy, and nitrogen adsorption/desorption isotherms. In contrast with pure MCM-41, KCl/MCM-41 composite exhibits improved humidity sensing properties within the relative humidity range of 11-95%. The impedance of KCl/MCM-41 composite changes by about four orders of magnitude over the whole humidity range with the response time and the recovery times are about 30 s and 35 s, respectively. Small humidity hysteresis and good stability are also observed based on our product. These results make our product a good candidate in fabricating humidity sensors with high performances and low synthetic complexity.
Keywords: 07.07.Df      82.47.Rs     
Received: 09 October 2009      Published: 23 April 2010
PACS:  07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)  
  82.47.Rs (Electrochemical sensors)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/5/050701       OR      https://cpl.iphy.ac.cn/Y2010/V27/I5/050701
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LIU Li
KOU Li-Ying
ZHONG Zhi-Cheng
WANG Lian-Yuan
LIU Li-Fang
LI Wei
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