TY - CONF AU - Nagy, Gergely AU - Benkó, Timea AU - Srankó, Dávid Ferenc AU - Borkó, László AU - Schay, Zoltán AU - Sáfrán, György AU - Geszti, Olga AU - Vargáné Beck, Andrea ED - Anon, null TI - Bimetallic Au-Cu/Al2O3 Catalysts in Selective Aerobic Oxidation of Glucose and Benzyl Alcohol T2 - 12th European Congress on Catalysis – EuropaCat-XII PY - 2015 SP - 1383 EP - 1384 PG - 2 UR - https://m2.mtmt.hu/api/publication/3023220 ID - 3023220 LA - English DB - MTMT ER - TY - CONF AU - Vargáné Beck, Andrea AU - Benkó, Timea AU - Srankó, Dávid Ferenc AU - Nagy, Gergely AU - Borkó, László AU - Schay, Zoltán AU - Sáfrán, György AU - Geszti, Olga TI - Bimetallic Au-Cu/Al2O3 catalysts in oxidation of glucose and benzyl alcohol T2 - 12th Pannonian Symposium on Catalysis PY - 2014 UR - https://m2.mtmt.hu/api/publication/2769320 ID - 2769320 LA - English DB - MTMT ER - TY - JOUR AU - Benkó, Timea AU - Vargáné Beck, Andrea AU - Frey, Krisztina AU - Srankó, Dávid Ferenc AU - Geszti, Olga AU - Sáfrán, György AU - Maróti, Boglárka AU - Schay, Zoltán TI - Bimetallic Ag–Au/SiO2 catalysts: Formation, structure and synergistic activity in glucose oxidation JF - APPLIED CATALYSIS A-GENERAL J2 - APPL CATAL A-GEN VL - 479 PY - 2014 SP - 103 EP - 111 PG - 9 SN - 0926-860X DO - 10.1016/j.apcata.2014.04.027 UR - https://m2.mtmt.hu/api/publication/2592132 ID - 2592132 LA - English DB - MTMT ER - TY - CONF AU - Benkó, Timea AU - Frey, Krisztina AU - Vargáné Beck, Andrea AU - Geszti, Olga AU - Guczi, László AU - Schay, Zoltán ED - Rachel, R TI - Silica-supported bimetallic Ag-Au nanoparticles: Formation, structure and high activity in glucose oxidation T2 - 11th European Congress on Catalysis PY - 2013 UR - https://m2.mtmt.hu/api/publication/2769316 ID - 2769316 LA - English DB - MTMT ER - TY - JOUR AU - Boskovic, G AU - Ratkovic, S AU - Kiss (Kiš), Ernő (Erne) AU - Geszti, Olga TI - Carbon nanotubes purification constrains due to large Fe–Ni/Al2O3 catalyst particles encapsulation JF - BULLETIN OF MATERIALS SCIENCE J2 - B MATER SCI VL - 36 PY - 2013 IS - 1 SP - 1 EP - 7 PG - 7 SN - 0250-4707 DO - 10.1007/s12034-013-0435-6 UR - https://m2.mtmt.hu/api/publication/2530445 ID - 2530445 LA - English DB - MTMT ER - TY - JOUR AU - Czigány, Zsolt AU - Misják, Fanni AU - Geszti, Olga AU - Radnóczi, György TI - Structure and phase formation in Cu–Mn alloy thin films deposited at room temperature JF - ACTA MATERIALIA J2 - ACTA MATER VL - 60 PY - 2012 IS - 20 SP - 7226 EP - 7231 PG - 6 SN - 1359-6454 DO - 10.1016/j.actamat.2012.09.034 UR - https://m2.mtmt.hu/api/publication/2136791 ID - 2136791 AB - Transmission electron microscopy characterization of Cu–Mn alloy thin films deposited by DC magnetron sputtering is applied to reveal the formation of phases throughout the composition range. Pure Cu and Mn films exhibit face-centred cubic (fcc) Cu and alpha-Mn phases, respectively. At room temperature the low Mn content films have fcc structure (c-phase). Mn can substitute Cu in the fcc Cu lattice up to 35 at.% Mn. The lattice parameter of fcc Cu–Mn alloy films follows a linear relationship of a0 = aCu + 0.322c(in A), where aCu = 3.615A ˚ is the lattice parameter of Cu and c is the Mn atomic concentration. At high Mn content, above 50 at.% Mn, a homogeneous one-phase structure is observed, possessing the short-range order of a-Mn. The incorporation of Cu into Mn suggests that this structure changes from crystalline a-Mn to disordered structure as the Cu content increases. A narrow two-phase region exists between 35 and 45 at.% Mn. A grain size minimum of 2–3 nm was observed in the 35–65 at.% Mn region. LA - English DB - MTMT ER - TY - JOUR AU - Lábár, János AU - Adamik, Miklós AU - Barna B., Péter AU - Czigány, Zsolt AU - Fogarassy, Zsolt AU - Horváth, Zsolt Endre AU - Geszti, Olga AU - Misják, Fanni AU - Morgiel, J AU - Radnóczi, György AU - Sáfrán, György AU - Székely, Lajos AU - Szuts, T TI - Electron Diffraction Based Analysis of Phase Fractions and Texture in Nanocrystalline Thin Films, Part III: Application Examples JF - MICROSCOPY AND MICROANALYSIS J2 - MICROSC MICROANAL VL - 18 PY - 2012 IS - 2 SP - 406 EP - 420 PG - 15 SN - 1431-9276 DO - 10.1017/S1431927611012803 UR - https://m2.mtmt.hu/api/publication/1962341 ID - 1962341 AB - In this series of articles, a method is presented that performs (semi) quantitative phase analysis for nanocrystalline transmission electron microscope samples from selected area electron diffraction (SAED) patterns. Volume fractions and degree of fiber texture are determined for the nanocrystalline components. The effect of the amorphous component is minimized by empirical background interpolation. First, the two-dimensional SAED pattern is converted into a one-dimensional distribution similar to X-ray diffraction. Volume fractions of the nanocrystalline components are determined by fitting the spectral components, calculated for the previously identified phases with a priori known structures. These Markers are calculated not only for kinematic conditions, but the Blackwell correction is also applied to take into account dynamic effects for medium thicknesses. Peak shapes and experimental parameters (camera length, etc.) are refined during the fitting iterations. Parameter space is explored with the help of the Downhill-SIMPLEX. The method is implemented in a computer program that runs under the Windows operating system. Part I presented the principles, while part II elaborated current implementation. The present part III demonstrates the usage and efficiency of the computer program by numerous examples. The suggested experimental protocol should be of benefit in experiments aimed at phase analysis using electron diffraction methods. LA - English DB - MTMT ER - TY - GEN AU - Pető, Gábor AU - Karacs, Albert AU - Geszti, Olga AU - Molnár, Á. AU - Joób-Fancsaly, Árpád AU - Frey, Krisztina AU - Guczi, László TI - Formation of TI surface roghness and Au nanoparticles by laser and ion beam process and their size dependet properties PY - 2011 UR - https://m2.mtmt.hu/api/publication/2392877 ID - 2392877 LA - English DB - MTMT ER - TY - CONF AU - Frey, Krisztina AU - Benkó, Timea AU - Geszti, Olga AU - Guczi, László AU - Schay, Zoltán TI - SiO2 supported Ag-Au alloy nanoparticles with high catalytic activity in selective oxidation of glucose T2 - Proc. of Final workshop of the COST D36 Action PY - 2011 SP - 39 EP - 40 PG - 2 UR - https://m2.mtmt.hu/api/publication/1865696 ID - 1865696 LA - English DB - MTMT ER - TY - CONF AU - Kovácsné Kis, Viktória AU - Geszti, Olga AU - Süle, Péter AU - Kovács, Zs. AU - Sáfrán, György ED - P, Gorria ED - J.A., Blanco TI - HRTEM Simulation of Au and Au-Pd Core-Shell Nanoparticles T2 - ISMANAM – International Symposium of on Metastable, Amorphous and Nanostructured Materials PY - 2011 SP - 214 DO - 10.13140/RG.2.2.24676.78727 UR - https://m2.mtmt.hu/api/publication/1858964 ID - 1858964 LA - English DB - MTMT ER -