Nanoporous silica glass sensibilisation in respect to the gas components detection

• Autorzy: Novikov A.F.
• Języki publikacji: EN

Abstrakty

EN

Techniques and technology for a specific surface treatment of the nanoporous (~8 nm) silicate glass is presented and discussed. That treatment is aimed at the achievement of the sample sensitivity to individual chemical components of atmosphere and other gas mixtures. The treatment technology is based on the impregnation of the nanoporous glass plates with solutions of different pH and other colour indicators and dyes. After the solvent evaporation, the indicator molecules remain immobilized in the pores of glass. The immobilized molecules are able of active interaction with ambient gas molecules. Those interactions are specific and they reveal themselves in the samples spectral changes (in visible and infrared wave range), including spectral absorbance and fluorescence. So, it has turned out that a selective detection of the gas mixture components and estimation of its concentration are possible. Physical and chemical interpretations of the observed phenomena are presented.

Słowa kluczowe

EN

silicate porous glasses; glass surface properties; optical gas sensors; interface molecular interactions; chemical hard and soft acids and bases

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2008
• Tom: Vol. 38, nr 1
• Strony: 65--74
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Novikov A.F.

• St. Petersburg State University of Information Technologies, Mechanics and Optics, Department of Optical Communications Physics and Technology, Kronwerksky av. 49, Saint-Petersburg 197101, Russia,

Bibliografia

• [1] YANOWSKI F., HEYER W., Poröse Gläser. Herstellung, Eigenschaften, Anwendung. I Auflage, VEB Deutscher Verlag für Grundstoffindustrie, Leipzig 1981, p. 276.
• [2] VARSHAL V.G. [Ed.], Binary–Phase Glasses: Structure, Properties, Application, Nauka, Leningrad 1991, p. 276 (in Russian).
• [3] MACEDO P.B., LITOVITS T.A., Method of precipitation of dopants in a porous silicate glass, Patent USA No. 4110096, publ. 29.08.78.
• [4] MESHKOVSKY I.K., NOVIKOV A.F., Indicating element sensitive to ammonia, Inventors certificate (USSR) No. 1 171 709, G01N, 31/22, Priority of 23.11.1983, Invention Bulletin, 1985, No. 29,p. 149.
• [5] DULNEV G.N., MESHKOVSKY I.K., NOVIKOV A.F., Optical gas analyzer, Inventors certificate (USSR) No. 1 200 665, G01N, 21/61, Priority of 05.08.1984, Invention Bulletin, 1988, No. 2, p. 263.
• [6] MESHKOVSKY I.K., NOVIKOV A.F., Journal of Analytical Chemistry 40(9), 1985, pp. 1630–3.
• [7] RUSSELL A.P., FLETCHER K.S., Optical sensor for the determination of moisture, Analytica Chimica Acta 170, 1985, pp. 209–16.
• [8] ARNOLD M.A., Foreword, Talanta 35(2), 1988, pp. V–VI.
• [9] JANATA J., Analytical Chemistry 63(12), 1991, pp. 270R–281R.
• [10] NOVIKOV A.F., ZEMSKII V.I., Glassy spectral gas sensors based on the immobilized indicators, Proceedings of the SPIE 2550, 1995, pp. 119–29.
• [11] NOVIKOV A.F., Studies on the inner structure of porous sodium-borate-silicate glass and some clusters formed therein, Optica Applicata 30(4), 2000, pp. 569–75.
• [12] KOLESNIKOV YU.L., NOVIKOV A.F., et al., Proceedings of the Conference. CLEO/Europe – EQEC 2003, Munich, Germany, 22–27 June, 2003.
• [13] NOVIKOV A.F., Characterisation of the inner structure and of nanoporous sodium-borate-silicate glasses, Optica Applicata 35(4), 2005, pp. 701–8.
• [14] GREGG S., SING C., Adsorption, Surface Area and Porosity, Academic Press, London, New York 1967.
• [15] PEARSON R.G., Hard and soft acids and bases, Journal of the American Chemical Society 85(22), 1963, pp. 3533–9.
• [16] PEARSON R.G. [Ed.], Hard and Soft Acids and Bases (Benchmark Papers in Inorganic Chemistry Series), Hutchinson Ross Publishing Company 1973.