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Characterisation of the inner structure and surface of nanoporous sodium-borate-silicate glasses

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Wybrane pełne teksty z tego czasopisma
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Warianty tytułu
Konferencja
7th Seminar Porous Glasses - Special Glasses PGL, 2005, Szklarska Poręba, Poland, September 10-14, 2005 r.
Języki publikacji
EN
Abstrakty
EN
Results of investigations are reported which have been carried out with use of some physical and chemical techniques on the nanoporous sodium-borate-silicate glasses with pore sizes within 5-100 nm. Porous structure is formed due to the leaching-out of initial glass Na 7/23 with phase separation. Some important parameters of the vitreous framework have been determined: percentage distribution of pores sizes, fractal dimensionality of porous glass, crystallinity grade within vitreous bulk, phase composition of crystalline areas within silica framework. The survey of the measured spectral characteristics (mainly in the infrared wave range) of the porous glass surface and its interpretation are presented. Spectral behaviour of some species immobilised on the surface of nanopores is discussed. Interaction of the silica surface, adsorbates and ambient gas medium is interpreted on the basis of the Pearson-Lewis conception about hard and soft acids and bases.
Czasopismo
Rocznik
Strony
701--708
Opis fizyczny
Bibliogr.17 poz.
Twórcy
autor
  • Federal St. Petersburg University of Information Technologies, Mechanics and Optics Physical Chemistry Department, Kronwerksky av. 49, Saint-Petersburg 197101, Russia, novikov@spb.runnet.ru
Bibliografia
  • [1] Yanowski f., Heyer W., Poröse Gläser: Herstellung, Eigenschaften, Anwendung. IAuflage, VEB Deutscher Verlag für Grundstoffindustrie, Leipzig 1981, p. 276 S.
  • [2] Varshal V.G. [Ed.], Binary-Phase Glasses: Structure, Properties, Application, Nauka, Leningrad 1991, p. 276 (in Russian).
  • [3] Foger R., Dispersed metal catalysts, [In] Catalysis, Science and Technology, J.R. Anderson, M. Boudart [Eds.] Vol. 6, Akademie-Verlag, Berlin 1985, pp. 227-305.
  • [4] Yermakov Yu.I., Kuznetsov B.N., Zacharov V.B., Catalysis by Supported Complexes, Elsevier, Amsterdam 1981.
  • [5] Macedo P.B., Barkatt A., Feng X., Finger S.M., Hojaji H., Laberge N., Mohr R., Penafiel M., Saad E., Development of porous glass fiber optic sensors, Proceedings of the SPIE 986, 1989, pp. 200-5.
  • [6] Meshkovsky I.K., Novikov A.F., Zemsky V.I., Porous silica glass modified with colour and fluorescent indicators as the basis of optical gas sensors, Ceramics 57, Polish Ceramics Bulletin 19, 1998, pp. 21-9.
  • [7] Kranold R., Untersuchungen des Porensystems in mikroporösen Gläsern mittels Röntgen-Kleinwinkelstreuung undHg-porosimetrie, Studia Biophysica 98, 1983, pp. 53-60.
  • [8] 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.
  • [9] Hair M.L., Infrared Spectroscopy in Surface Chemistry, Dekker, New York 1967, pp. 103-21 (Chapter 4.3: Adsorption studies with porous glass).
  • [10] Novikov A.F., Spectrochemical investigation of the mesoporous silicate glasses, Glass Physics and Chemistry 21(1), 1995, pp. 81-6 (in Russian).
  • [11] Description and Instruction Manual to the X-ray Diffractometer D/MAX-RB, Rigaku Corp., Japan 1991.
  • [12] Powder Diffraction File. Inorganic Phases. Compiled by the JCPDS International Centre of Diffraction Data, 1987.
  • [13] Principle and Operation Manual to the Fourier Transform Infrared Spectrometer 5DXB, Nicolet Inc., USA 1990.
  • [14] Gregg S., Sing C., Adsorption, Surface Area and Porosity, Academic Press, London - New York 1967.
  • [15] Ruland W., X-ray determination of crystallinity and diffuse disorder scattering, Acta Crystallographica 14, 1961, pp. 1180-5.
  • [16] Pearson R.G., Hard and soft acids and bases, Journal of the American Chemical Society 85(22), 1963, pp. 3533-9.
  • [17] Pearson R.G. [Ed.], Hard and Soft Acids and Bases, Dowden, Hutchinson and Ross, Stroutburg, PA 1973. Ser.: Benchmark in Inorganic Chemistry.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW1-0020-0009
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