X-ray diffraction, extended x-ray absorption fine structure and Raman spectroscopy studies of WO3 powders and (1−x)WO3−y⋅xReO2 mixtures
作者： A. Kuzmin , J. Purans , E. Cazzanelli , C. Vinegoni , G. Mariotto
DOI: 10.1063/1.368596
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摘要: Pure ground tungsten trioxide WO3 and (12x)WO32yixReO2 mixtures were studied by x-ray absorption spectroscopy, powder diffraction Raman spectroscopy in comparison with hydrogen bronzes H x WO 3 hydrogenated calcium tungstate CaWO 4 :H. It was found that a grinding of pure leads to decrease the crystallites size development bluish coloration. The color change be reversible under moderate heat treatment or after storage oxidizing atmosphere is attributed reduced W 51 ions, located at surface freshly powder. composed monoclinic/orthorhombic orthorhombic ReO2 phases grain boundary containing 5.71 ions which are mainly responsible for compound low rhenium ion concentrations. In both cases, (62z)1 (0,z<1) centers strong optical resulting dramatic total intensity. structural models free bulk /ReO2 intragrain proposed discussed. © 1998 American Institute Physics. @S0021-8979~98!07322-8#
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sci-hub.se 参考文章(24)
Harold Philip Klug, Leroy Elbert Alexander, X-ray diffraction procedures for polycrystalline and amorphous materials ,(1954)
P.M. Woodward, A.W. Sleight, T. Vogt, Structure refinement of triclinic tungsten trioxide Journal of Physics and Chemistry of Solids. ,vol. 56, pp. 1305- 1315 ,(1995) , 10.1016/0022-3697(95)00063-1
C GRANQVIST, Electrochromism and smart window design Solid State Ionics. pp. 479- 489 ,(1992) , 10.1016/0167-2738(92)90418-O
Stéphane Laruelle, Michel Figlarz, High-Energy Milling of WO3 Oxides: Amorphization and Reaction with Cs2CO3 Journal of Solid State Chemistry. ,vol. 111, pp. 172- 177 ,(1994) , 10.1006/JSSC.1994.1214
A. Kuzmin, EDA: EXAFS data analysis software package Physica B-condensed Matter. ,vol. 208, pp. 175- 176 ,(1995) , 10.1016/0921-4526(94)00663-G
SK Deb, None, Optical and photoelectric properties and colour centres in thin films of tungsten oxide Philosophical Magazine. ,vol. 27, pp. 801- 822 ,(1973) , 10.1080/14786437308227562
C. Bechinger, D. Ebner, S. Herminghaus, P. Leiderer, The dynamics of the photochromic effect in tungsten trioxide Solid State Communications. ,vol. 89, pp. 205- 207 ,(1994) , 10.1016/0038-1098(94)90683-1
Tsuruji Iwai, Temperature Dependence of the Optical Absorption Edge of Tungsten Trioxide Single Crystal Journal of the Physical Society of Japan. ,vol. 15, pp. 1596- 1600 ,(1960) , 10.1143/JPSJ.15.1596
F.H. Jones, K. Rawlings, S. Parker, J.S. Foord, P.A. Cox, R.G. Egdell, J.B. Pethica, STM characterisation of a c(2 × 2) reconstruction on Na0.65WO3(100) Surface Science. ,vol. 336, pp. 181- 192 ,(1995) , 10.1016/0039-6028(95)00513-7
Ulrike Diebold, P. A. Cox, V. E. Henrich, The surface science of metal oxides ,(1994)