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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v20.i3.30
pages 217-225

A HUMIDITY SENSOR BASED ON MgO-MCM-41 NANOPOROUS SILICA

Mansoor Anbia
Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Farjam Street, Narmak, P.O. Box 16846-13114, Tehran, Iran
Mohsen Neyzehdar
Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Farjam Street, Narmak, P.O. Box 16846-13114, Tehran, Iran
Roghaye Dehghan
Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Farjam Street, Narmak, P.O. Box 16846-13114, Tehran, Iran

要約

MgO-doped mesoporous silica MCM-41 was prepared by sol-gel technique and characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and x-ray diffraction techniques. It is clear that the MgO did not destroy the mesoporous structure of MCM-41. Different levels of MgO were doped into MCM-41 and investigated as a humidity sensor by screen printing on the alumina substrate with Ag-Pd interdigited electrode at room temperature. Comparison of MgO-MCM-41 with pure MCM-41 shows improved humidity-sensing properties. The optimal mixing ratio was 1 (R = 1), which exhibits excellent humidity sensitivity from 11% to 95% RH (relative humidity), very good response and recovery properties. The investigation of the humidity-sensitive characteristics of MgO-MCM-41 shows that this material is a promising humidity sensor.


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