Laboratorio de Cristalografía Aplicada (LCA)

Investigador/a responsable:

Diego Germán Lamas

e-mail: dlamas@unsam.edu.ar

Webs: www.unsam.edu.ar/escuelas/ciencia/lac

            laboratoriolca.wixsite.com/lcaarg

Actividades:

Las líneas de investigación del laboratorio de cristalografía aplicada comprenden diversas temáticas donde la caracterización primordialmente se basa en la interacción de la radiación X con la materia empleando tanto equipamiento de laboratorio como luz sincrotrón. Entre las técnicas cabe mencionar la difracción de polvo, dispersión de rayos X a bajos ángulos (SAXS), fotoemisión de electrones por rayos X (XPS) y técnicas de absorción (XANES, EXAFS) aplicado a sistemas condensados como cerámicos para celdas de combustible de temperatura intermedia y materia blanda (cristales líquidos, organogeles, hidrogeles, nanoemulsiones, micelas, proteínas, etc.). Además se trabaja en el desarrollo de herramienta de cálculo para interpretación de datos experimentales. El laboratorio cuenta con equipos modernos de difracción de rayos X de polvos y de dispersión de rayos X a bajos ángulos (SAXS) los cuales estarán abiertos a la comunidad.

Publicaciones Seleccionadas:

"Tailoring the stability and photo-Fenton activity of Fe-modified nanostructured silicates by tuning the metal speciation from different synthesis conditions", V.R. Elías, P.A. Ochoa Rodriguez, E.G. Vaschetto, G.A. Pecchi, C. Huck-Iriart, S.G. Casuscelli, G.A. Eimer, Molecular Catalysis, 481, (2020), 110217.

“In-situ X-ray absorption spectroscopy study of CuO-NiO/CeO2-ZrO2 oxides: redox characterization and its effect in catalytic performance for partial oxidation of methane”, L. Toscani, M.G. Zimicz, T. Martins, D. Lamas and S. Larrondo, RSC Advances 8 (2018) 12190-12203.

“Influence of particle size and agglomeration in Solid Oxide Fuel Cell cathodes using manganite nanoparticles”, H. Martinelli, D.G. Lamas, A.G. Leyva and J. Sacanell, Materials Research Express 5 (2018) 075013.

“Synthesis and structural characterisation of unprecedented primary N-nitrosamines coordinated to iridium (IV)", A. Foi, F. Di Salvo, F. Doctorovich, C. Huck-Iriart, J.M. Ramallo-López, M. Dürr, I. Ivanović-Burmazović, K. Stirnat, S. Garbe and A. Klein, Dalton Transactions 47 (2018) 11445-11454.

"Unraveling the Chemical State of Cobalt in Co-Based Catalysts during Ethanol Steam Reforming: an in Situ Study by Near Ambient Pressure XPS and XANES", C. Huck-Iriart, L. Soler, A. Casanovas, C. Marini, J. Prat, J. Llorca and C. Escudero, ACS Catalysis 8 (2018) 9625–9636.

"Catalytic oxidation of carbon monoxide on a curved Pd crystal: spatial variation of active and poisoning phases in stationary conditions" F. Schiller, M. Ilyn,V. Pérez-Dieste, C. Escudero, C. Huck-Iriart, N. Ruiz del Arbol, B. Hagman, L.R. Merte, F. Bertram, M. Shipilin, S. Blomberg, J. Gustafson, E. Lundgren, J.E. Ortega, Journal of the American Chemical Society 140(47), (2018),16245-16252

“New insights into the Growth Mechanism of Ultrathin Au Nanowires from combined In-Situ EXAFS and SAXS Studies” F. Pschunder; J. Puig; L.J. Giovanetti; C. Huck-Iriart; F. Requejo, D. Buceta, C. Hoppe, J. Ramallo-Lopez, The Journal of Physical Chemistry C, 122, (2018), 29051–29061.

“Oxygen reduction mechanisms in nanostructured La0.8Sr0.2MnO3 cathodes for Solid Oxide Fuel Cells”, J. Sacanell, J. Hernández Sánchez, A.E. Rubio López, H. Martinelli, J. Siepe, A.G. Leyva, V. Ferrari, D. Juan, M. Pruneda, A. Mejía Gómez and D.G. Lamas, The Journal of Physical Chemistry C 121 (2017) 6533-6539.

“Synthesis and characterization of mesoporous NiO/ZrO2-CeO2 catalysts for total methane conversion”, R. Bacani, L.M. Toscani, T.S. Martins, M.C.A. Fantini, D.G. Lamas and S.A. Larrondo, Ceramics International 43 (2017) 7851-7860.

“Plasma nitriding of 316L stainless steel in two different N2-H2 atmospheres - Influence on microstructure and corrosion resistance”, Evangelina De Las Heras, Gabriel Ybarra, Diego Lamas, Amado Cabo, Eugenia Laura Dalibon and Sonia P. Brühl, Surface and Coatings Technology 313 (2017) 47-54.

“Nanostructured LnBaCo2O6-δ (Ln = Sm, Gd) with layered structure for intermediate temperature solid oxide fuel cell cathodes”, A.E. Mejía Gómez, D.G. Lamas, A.G. Leyva and J. Sacanell, AIP Advances 7 (2017) 045214.

“In-situ XANES and XPD studies of NiO/Ce0.9Zr0.1O2 IT-SOFCs anode nanomaterial as catalyst in the CPOM reaction”, M.G. Zimicz, F.D. Prado, D.G. Lamas and S.A. Larrondo, Applied Catalysis A 542 (2017) 296-305.

“Electrochemical Behavior of Nanostructured La0.8Sr0.2MnO3 as Cathodes for Solid Oxide Fuel Cells”, J. Sacanell, J. Hernández Sánchez, A.E. Rubio Lopez, H. Martinelli, J. Siepe, A.G. Leyva, V.P. Ferrari, M. Pruneda, D. Juan and D.G. Lamas, ECS Transactions 78 No. 1 (2017) 667-675.

“Fullerene-Silicon polymerization evidence” E.J. Di Liscia, C. Huck Iriart, E.B. Halac, M. Reinoso and H.A. Huck, Interdisciplinary Journal of Chemistry 2 (2017) 1-4.

“Liquid-crystalline coordination polymers based on tetra(alkoxybenzoato)dirho-dium(II) complexes axially linked by tetrazine, phenazine and 4,4′-bipyridine” L. Rossi, C. Huck Iriart, A.M. Castro and F.D. Cukiernik, Journal of Coordination Chemistry 70 (2017) 3633-3649.

“Fluorescent silica nanoparticles with chemically reactive surface: Controlling spatial distribution in one-step synthesis”, M.L. Vera, A. Cánneva, C. Huck Iriart, F.G. Requejo, M.G. Gonzalez, M.L. Dell’Arciprete and A. Calvo, Journal of Colloids and Interface Science 496 (2017) 456-464.

“Performance of La0.6Sr0.4Co1−yFeyO3 (y=0.2, 0.5 and 0.8) nanostructured cathodes for intermediate-temperature solid-oxide fuel cells: Influence of microstructure and composition”, A. Mejía Gómez, J. Sacanell, A.G. Leyva and D.G. Lamas, Ceramics International 42 (2016) 3145-3153.

“Electronic properties in intrinsically disordered double perovskites: Sr3MnMo2O9 and Ba3MnMo2O9 with Mo5+ valence state”, C.A. López, M.E. Saleta, J.C. Pedregosa, R.D. Sánchez, D.G. Lamas, J.A. Alonso and M.T. Fernández-Díaz, Journal of Alloys and Compounds 661 (2016) 411-418.

“Structural studies of mesoporous ZrO2-CeO2 and ZrO2-CeO2/SiO2 mixed oxides for catalytical applications”, R. Bacani, T.S. Martins, M.C.A. Fantini and D.G. Lamas, Journal of Alloys and Compounds 671 (2016) 396-402.

“Time Resolved DXAS Study on Micro and Nano NiO/Ce0.9Gd0.1O1.95 Cermets for Intermediate Temperature Solid Oxide Fuel Cells”, A. Fernandez Zuvich, S. Larrondo, M. Saleta, F. Napolitano, A. Caneiro, H. Troiani, D.G. Lamas, M.D. Arce, A. Serquis and A. Soldati, ECS Transactions 72 (2016) 215-224.

“Effects of the Incorporation of Sc2O3 into CeO2-ZrO2 Solid Solution: Structural Characterization and in Situ XANES/TPR Study under H2 Atmosphere”, L.M. Toscani, A.F. Craievich, M.C.A. Fantini, D.G. Lamas and S.A. Larrondo, The Journal of Physical Chemistry C 120 (2016) 24165–24175.

“Determination of Surface Tension of Surfactant Solutions through Capillary Rise Measurements: An Image-Processing Undergraduate Laboratory Experiment”, C. Huck-Iriart, A. De-Candia, J Rodriguez, C. Rinaldi, Journal of Chemical Education 93 (2016) 1647-1651.

“New insights about flocculation process in sodium caseinate-stabilized emulsions”, C Huck-Iriart, J. Montes-de-Oca-Ávalos, ML Herrera, RJ Candal, CLP Oliveira, I. Torriani, Food Research International 89 (2016) 338-346.

“Controlled mechanochemical synthesis and hydrogen desorption mechanisms of nanostructured Mg2CoH5”, G. Zepon, D.R. Leiva, M.J. Kaufman, S.J.A. Figueroa, R. Floriano, D.G. Lamas, A.A.C. Asselli and W.J. Botta, International Journal of Hydrogen Energy 40 (2015) 1504-1515.

“A crystallization and structural study of the compound Pb2V2O7 synthesized by a facile sol-gel-based chemical route”, A. Suárez-Gómez, S.J.A. Figueroa, D.G. Lamas and J.C. Cezar, Journal of Sol-Gel Science and Technology 75 (2015) 291-297.

“Anomalous X-Ray Diffraction Study of Pr-substituted BaCeO3-d”, J.F. Basbus, A. Caneiro, L. Suescun, D.G. Lamas and L.V. Mogni, Acta Crystallographica B 71 (2015), 455-462.

“Electrical transport properties of V2O5 thin films obtained by thermal annealing of layers grown by RF magnetron sputtering at room temperature”, H.M. Roque Giannetta, C. Calaza, D.G Lamas, L. Fonseca and L. Fraigi, Thin Solid Films 589 (2015) 730-734.

“XPD and XANES Studies of Ce0.9Zr0.1O2 Nanocatalysts under Redox and Catalytic CH4 Oxidation Conditions”, María G. Zimicz, Fernando D. Prado, Analía L. Soldati, Diego G. Lamas and Susana A. Larrondo, The Journal of Physical Chemistry C 119 (2015) 19210-19217.

“Structural and morphological properties of Ce(1−x)FexO2−δ synthesized by citrate route”, M.O. Mazan, A.F. Craievich, E.B. Halac, M.C.A. Fantini, D.G. Lamas and S.A. Larrondo, Ceramics International 41 (2015) 13721-13730.

“In situ study of the endotaxial growth of hexagonal CoSi2 nanoplatelets in Si (001)” D. Da Silva Costa, C. Huck Iriart, G. Kellermann, L.J. Giovanetti, A.F. Craievich, F.G. Requejo. Applied Physics Letters 107(22), (2015) 223101

“Polymorphic Behavior and Industrial Applications as Trans-Fat Alternatives of Two Stearins coming from a New Sunflower Oil Variety” Juan Manuel Montes de OcaÁvalos, Cristián Huck-Iriart, Jaime Alberto Rincón-Cardona, Roberto Jorge Candal and María Lidia Herrera – Agricultural Research Updates – Nova Science Publishers, Inc; volumen 11, 3 (2015), 85-115 . ISBN: 978-1-63482-968-7 Editores: Prathamesh Gorawala y Srushti Mandhatri