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Abstract
Two crystallographic forms of TiO2 (rutile and anatase) were subject to an extended x-ray absorption fine structure study at the K threshold of titanium. Data analysis was carried out by Fourier methods and curve fitting techniques. Using the theoretical phases, Ti-O bond distances of 1.93(1) Å were derived both for rutile and anatase, as compared to the crystallographic values of 1.948 - 1.980(1) Å (rutile) and 1.934-1.980(1) Å (anatase). The ratio of the cation coordination numbers Nr/Na = 1.07 is close to the theoretical value.
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Affiliation(s)
- G. Vlaic
- lstituto G. Donegani, Novara, Italy
| | | | | | - S. Mobilio
- Laboratori Nazionali di Frascati, INFN, Gruppo PULS, Frascati, Italy
| | - G. Navarra
- lstituto Chimico, Università di Cagliari, Cagliari, Italy
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Vlaic G, Bart JCJ. Short-range structure determination by EXAFS spectroscopy: Theory, experimental technique and spectral analysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19821010503] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Provost K, Bouvet-Muller D, Crauste-Manciet S, Olivi L, Vlaic G, Michalowicz A. Degradation of platinum based anticancer drugs by methionine: An EXAFS study. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/190/1/012206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Mathey Y, Michalowicz A, Toffoli P, Vlaic G. Resolution of a structural disorder through apparently inconsistent x-ray diffraction and EXAFS data: structure of the new layered system manganese copper phosphorus sulfide (Mn1-xCu2x)PS3 (x = 0.13). Inorg Chem 2002. [DOI: 10.1021/ic00175a021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bordiga S, Coluccia S, Lamberti C, Marchese L, Zecchina A, Boscherini F, Buffa F, Genoni F, Leofanti G, Petrini G, Vlaic G. Reply to Comment on "Symmetry and Cluster Size Effects in XANES Spectra". ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100044a047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Dal Santo V, Dossi C, Recchia S, Colavita P, Vlaic G, Psaro R. Carbon tetrachloride hydrodechlorination with organometallics-based platinum and palladium catalysts on MgO. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1169(01)00458-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cocco G, Enzo S, Fagherazzi G, Schiffini L, Bassi IW, Vlaic G, Galvagno S, Parravano G. Chemical reactivity of supported gold. A structural study by small-angle x-ray scattering and x-ray absorption spectroscopy. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100482a022] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vlaic G, Andreatta D, Cepparo A, Colavita PE, Fonda E, Michalowicz A. Estimation of the experimental standard deviations in EXAFS measurements. J Synchrotron Radiat 1999; 6:225-227. [PMID: 15263257 DOI: 10.1107/s0909049599000722] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 01/14/1999] [Indexed: 05/24/2023]
Affiliation(s)
- G Vlaic
- Dipartimento di Scienze Chimiche, Univ. di Trieste, Italia.
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Michalowicz A, Provost K, Laruelle S, Mimouni A, Vlaic G. F-test in EXAFS fitting of structural models. J Synchrotron Radiat 1999; 6:233-235. [PMID: 15263260 DOI: 10.1107/s0909049599000734] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 01/14/1999] [Indexed: 05/24/2023]
Affiliation(s)
- A Michalowicz
- Groupe de Physique des Millieux Denses, Université Paris XII, Créteil, France.
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Michalowicz A, Vlaic G. Multiple solutions in data fitting: a trap in EXAFS structural analysis and some ideas to avoid it. J Synchrotron Radiat 1998; 5:1317-20. [PMID: 16687840 DOI: 10.1107/s0909049598002970] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/1997] [Accepted: 02/16/1998] [Indexed: 05/09/2023]
Abstract
A possible source of error on interatomic distance determination in EXAFS multishell data analysis is described on the basis of fitting a simulated signal for a cluster of Rh atoms with an interaction of O atoms; a fit of an experimental signal is also presented. The origin of this type of mistake is briefly discussed.
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Affiliation(s)
- A Michalowicz
- Department of Physics, University of Paris XII, 61 Avenue De Gaulle, 94010 Creteil, France
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Lamberti C, Bordiga S, Arduino D, Zecchina A, Geobaldo F, Spanó G, Genoni F, Petrini G, Carati A, Villain F, Vlaic G. Evidence of the Presence of Two Different Framework Ti(IV) Species in Ti−Silicalite-1 in Vacuo Conditions: an EXAFS and a Photoluminescence Study. J Phys Chem B 1998. [DOI: 10.1021/jp981225n] [Citation(s) in RCA: 154] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - F. Geobaldo
- Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
| | | | | | | | - A. Carati
- EniTecnologie, Via F. Maritano 26, I-20097 S. Donato (Mi), Italy
| | - F. Villain
- LURE, Université Paris-Sud, 91405 Orsay Cedex, France
| | - G. Vlaic
- Dipartimento di Scienze Chimiche, Via Valerio 28, Trieste, and Sincrotrone Trieste SCpA, Padriciano 99, I-34012 Trieste, Italy
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Vlaic G, Di Monte R, Fornasiero P, Fonda E, Kašpar J, Graziani M. The CeO2-ZrO2 System: Redox Properties and Structural Relationships. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0167-2991(98)80876-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Bordiga S, Scarano D, Lamberti C, Zecchina A, Geobaldo F, Vlaic G, Buzzoni R, Tozzola G, Petrini G. Evolution of Fe3+from Framework to Extra-Framework Species in Fe-Silicate as a Function of the Template Burning Temperature. ACTA ACUST UNITED AC 1997. [DOI: 10.1051/jp4:1997275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Lamberti C, Bordiga S, Salvalaggio M, Spoto G, Zecchina A, Geobaldo F, Vlaic G, Bellatreccia M. XAFS, IR, and UV−Vis Study of the CuI Environment in CuI-ZSM-5. J Phys Chem B 1997. [DOI: 10.1021/jp9601577] [Citation(s) in RCA: 294] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. Lamberti
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - S. Bordiga
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - M. Salvalaggio
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - G. Spoto
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - A. Zecchina
- Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Via P. Giuria 7, Torino, Italy
| | - F. Geobaldo
- Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
| | - G. Vlaic
- Dipartimento di Scienze Chimiche, Via Valerio 28, Trieste, and Sincrotrone Trieste SCpA, Padriciano 99, I-34012 Trieste, Italy
| | - M. Bellatreccia
- Dipartimento di Chimica, Universitá “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Roma, Italy
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Vlaic G, Navarra G, Regnard JR, Williams CE, Jérôme R. EXAFS Study of Halato-Telechelic Polymers End-Capped With Group IVb Metal Carboxylates at Room and Low Temperatures. ACTA ACUST UNITED AC 1995. [DOI: 10.1051/jp2:1995156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Dossi C, Psaro R, Bartsch A, Fusi A, Sordelli L, Ugo R, Bellatreccia M, Zanoni R, Vlaic G. Chemical Vapor Deposition of Platinum Hexafluoroacetylacetonate Inside KL Zeolite: A New Route to Nonacidic Platinum-in-Zeolite Catalysts. J Catal 1994. [DOI: 10.1006/jcat.1994.1047] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Meagher A, Coey J, Belakhovsky M, Pinéri M, Jérome R, Vlaic G, Williams C, Van Dang N. Microstructure of iron(III) α,ω-dicarboxylatopolybutadiene. POLYMER 1986. [DOI: 10.1016/0032-3861(86)90060-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Vlaic G, Bart J, Foá M, Francalanci F, Clement R. EXAFS determination of the coordination environment of the metal in the homogeneous anionic (NCCH2Co(COOCH3)(CO)3)− carbonylation catalyst. J Organomet Chem 1985. [DOI: 10.1016/0022-328x(85)80091-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Vlaic G, Bart JCJ, Cavigiolo W, Navarra G, Mobilio S. X-ray absorption spectroscopic study of α-TiCl 3and TiCl 2. Acta Crystallogr A 1981. [DOI: 10.1107/s010876738109048x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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