학술논문
Metal oxide blended ZSM-5 nanocomposites as ethanol sensors.
Document Type
Article
Source
Subject
*ZSM zeolites
*METALLIC oxides
*NANOCOMPOSITE materials
*ETHANOL
*CHEMICAL detectors
*FOURIER transform infrared spectroscopy
*X-ray diffraction
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Language
ISSN
0250-4707
Abstract
Nano-ZSM-5 is synthesized without organic template via microwave-assisted hydrothermal technique. The synthesized nano-ZSM-5 zeolite is blended with metal oxides (ZnO and TiO) to have novel composites as ethanol sensors. The composites are characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) techniques. A study on ethanol sensing behaviour of metal oxide blended composite screen-printed thick films is carried out and the effect of metal oxide concentration on various ethanol sensing features, specifically operating temperature, response/recovery time and active region of the sensor, are investigated. XRD and FTIR confirm the blending of metal oxides in ZSM-5 matrix. Both, ZnO and TiO blended, composite films are sensitive to ethanol. It can be concluded that metal oxide blending improves the preformance of sensor for ethanol detection. The response/recovery time and active sensing regions depend upon the concentration of metal oxide in host zeolite. The ZnO/ZSM-5 and TiO/ZSM-5 composite films are the excellent ethanol sensors. [ABSTRACT FROM AUTHOR]