Number of the records: 1
Ag-ZSM-5 zeolite as high-temperature water-vapor sensor material
- 1.
SYSNO ASEP 0315575 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ag-ZSM-5 zeolite as high-temperature water-vapor sensor material Title Zeolit Ag-ZSM-5 jako vysokoteplotní senzorový material pro detekci vodní páry Author(s) Sazama, Petr (UFCH-W) RID, ORCID
Jirglová, Hana (UFCH-W) RID, ORCID
Dědeček, Jiří (UFCH-W) RID, ORCIDSource Title Materials Letters. - : ELSEVIER SCIENCE BV - ISSN 0167-577X
Roč. 62, č. 27 (2008), s. 4239-4241Number of pages 3 s. Language eng - English Country NL - Netherlands Keywords senzors ; nanomaterials ; water-vapor sensing ; Ag clusters Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/05/2309 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000259768600001 DOI 10.1016/j.matlet.2008.06.037 Annotation The effect of the presence of water vapor in the gas stream on the absorption spectra of AgH-ZSM-5 zeolites at high temperatures was investigated using UV-Vis DR spectroscopy. Agmn+ silver species exhibiting an absorption band at 37 700 cm-1 are formed in highly loaded AgH-ZSM-5 treated in an oxygen stream. The presence of water in the gas stream results in the fast erosion of the band at 37 700 cm-1 and the intensity of the band is fully recovered under water-free conditions. Agmn+ silver species in the AgH-ZSM-5 zeolite and their optical properties are stable under high-temperature treatment of zeolite under various conditions. Thus, the preparation of chemically/thermally stable sensing material based on silicon-rich zeolites containing metal ion species suitable for sensor applications under sever conditions was demonstrated. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2009
Number of the records: 1