Neutron diffraction study of porous glasses structure

• Autorzy: Naberezhnov A. , Antropova T. , Glavatsky I. , Seregin M. , Drozdova I.
• Języki publikacji: EN

Abstrakty

EN

Microscopic structure of three types of porous glasses with the average pore diameter of 5, 7 and 140 nm obtained by chemical etching was studied by neutron diffraction. The analysis of diffraction patterns has shown that in these glasses, besides an amorphous phase forming a weakly structured background, there are microscopic crystalline inclusions of sassolite with a diffraction size of 26š3 nm and of ?-quartz with a characteristic size of 6š1 nm. Microcrystalline inclusions sizes do not depend on the average pore size diameter. It is shown that in these samples a tridymite phase does not make a significant contribution to observed scattering and a relative sassolite contribution decreases substantially with the average pore size increasing from 5 to 140 nm.

Słowa kluczowe

EN

porous borosilicate glass; neutron diffraction; nanoparticles

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2012
• Tom: Vol. 42, nr 2
• Strony: 271--280
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Naberezhnov A.

autor

Antropova T.

autor

Glavatsky I.

autor

Seregin M.

autor

Drozdova I.

• Ioffe Physical Technical Institute, Polytekhnicheskaya 26, 194021, Saint Petersburg, Russia

Bibliografia

• [1] ZHDANOV S.P., Porous glasses and their structure, Wissenschaftliche Zeitschrift der Friedrich--Schiller-Universität Jena. Mathematisch-Naturwissenschaftliche Reihe, 1987, pp. 817–830.
• [2] MAZURIN O.V., ROSKOVA G.P., AVERYANOV V.I., ANTROPOVA T.V., Two-Phase Glasses Structure,Properties, Application, Nauka, Leningrad, 1991, Chapter 10, p. 276, (in Russian).
• [3] ENKE D., JANOWSKI F., SCHWIEGER W., Porous glasses in the 21st century – A short review,Microporous and Mesoporous Materials 60(1–3), 2003, pp. 19–30.
• [4] FOKIN A.V., KUMZEROV YU.A., OKUNEVA N.M., NABEREZHNOV A.A., VAKHRUSHEV S.B.,GOLOSOVSKY I.V, KURBAKOV A.I., Temperature evolution of sodium nitrite structure in a restricted geometry, Physical Review Letters 89(17), 2002, article 175503.
• [5] VAKHRUSHEV S.B., KUMZEROV YU.A., FOKIN A., NABEREZHNOV A.A., ZALAR B., LEBAR A., BLINC R.,23Na spin-lattice relaxation of sodium nitrite in confined geometry, Physical Review B 70(13), 2004,article 132102.
• [6] VAKHRUSHEV S.B., KOROLEVA E.YU., KUMZEROV YU.A., NABEREZHNOV A.A., FOKIN A.V.,KOROTKOV L.H., TOVAR M., COLLA E.V., Structure and properties of sodium nitrite in restricted geometry, Nanotekhnika 1(5), 2006, pp. 18–24, (in Russian).
• [7] VAKHRUSHEV S.B., GOLOSOVSKY I.V., KOROLEVA E.YU., NABEREZHNOV A.A., OKUNEVA N.M.,SMIRNOV O.P., FOKIN A.V., TOVAR M., GLAZMAN M., Structure and dielectric response of Na1–xKxNO2 nanocomposite solid solutions, Physics of the Solid State 50(8), 2008, pp. 1548–1554.
• [8] ARAUJO C., SCOTT J.F., BRUCE GODFREY R., MCMILLAN L., Analysis of switching transients in KNO3 ferroelectric memories, Applied Physics Letters 48(21), 1986, pp. 1439–1440.
• [9] ANTROPOVA T.V., DROZDOVA I.A., Electron-microscopy and microdiffraction study of porous glasses, Russian Journal of Applied Chemistry 66(10), 1993, pp. 1675–1684.
• [10] ANTROPOVA T.V., TSYGANOVA T.A., ROSKOVA G.P., KOSTYREVA I.G., POLYAKOVA I.G., MEDVEDEVA S.V.,Some features of leaching of two-phase alkali borosilicate glass containing PbO, Glass Physics and Chemistry 27(2), 2001, pp. 175–181.
• [11] ANTROPOVA T.V., DROZDOVA I.A., Influence of synthesis conditions if porous glasses on their structure, Fizika i Khimiya Stekla 21(2), 1995, pp 131–140, (in Russian).
• [12] ANTROPOVA T.V., DROZDOVA I.A., YASTREBOV S.G., EVSTRAPOV A.A., Porous glass: Inhomogeneities and light transmission, Optica Applicata 30(4), 2000, pp. 553–567.
• [13] ANTROPOVA T.V., ANFIMOVA I.N., GOLOVINA G.F., Influence of the composition and temperature of heat treatment of porous glasses on their structure and light transmission in the visible spectral range, Glass Physics and Chemistry 35(6), 2009, pp. 572–579.
• [14] ANTROPOVA T.V., DROZDOVA I.A., VASILEVSKAYA T.N., VOLKOVA A.V., ERMAKOVA L.E.,SIDOROVA M.P., Structural transformations in thermally modified porous glasses, Glass Physics and Chemistry 33(2), 2007, pp. 109–121.
• [15] GUTINA A., ANTROPOVA T., RYSIAKIEWICZ-PASEK E., VIRNIK K., FELDMAN YU., Dielectric relaxation in porous glasses, Microporous and Mesoporous Materials 58(3), 2003, pp. 237–254.
• [16] ANTROPOVA T.V., DROZDOVA I., KUKHTEVICH I., EVSTRAPOV A., ESIKOVA N., Application of high resolution microscopy and optical spectroscopy for study of phase separation in phosphorus- and fluorine-containing sodium borosilicate glasses, Optica Applicata 40(2), 2010, pp. 293–304.
• [17] KREISBERG V.A., RAKCHEEV V.P., ANTROPOVA T.V., Influence of the acid concentration on the morphology of micropores and mesopores in porous glasses, Glass Physics and Chemistry 32(6), 2006, pp. 615–622.
• [18] BURKAT T.M., DOBYCHIN D.P., Macrokinetics of porous alkali leaching, Soviet Journal of Glass Physics and Chemistry 18(2), 1992, pp. 165–170.
• [19] DROZDOVA I., ANTROPOVA T., Features of a structure of the phase-separated and porous borosilicate glasses with/without an impurity of fluorid-ions according to electron microscopy, Optica Applicata 38(1), 2008, pp. 17–24.
• [20] BOISEN M. B., GIBBS G.V., BUKOWINSKI M.S.T., Framework silica structures generated using simulated annealing with a potential energy function based on an H6 Si2O7 molecule, Physics and Chemistry of Minerals 21(5), 1994, pp. 269–284.
• [21] GAJHEDE M., LARSEN S., RETTRUP S., Electron density of orthoboric acid determined by X-ray diffraction at 105 K and ab initio calculations, Acta Crystallographica Section B 42(6), 1986,pp. 545–552.
• [22] WILL G., BELLOTTO M., PARRISH W., HART M., Crystal structures of quartz and magnesium germanate by profile analysis of synchrotron-radiation high-resolution powder data, Journal of Applied Crystallography 21(2), 1988, pp. 182–191.
• [23] PATTERSON A.L., The Scherrer formula for X-rays particle size determination, Physical Review 56(10), 1939, pp. 978–982.
• [24] BURKAT T.M., DOBYCHIN D.P., Distribution of boron oxide in surface layer of porous glasses, Fizika i Khimya Stekla 17(1), 1991, pp. 160–163, (in Russian).