TY - JOUR AU - Gubó, Richard AU - Ren, Pengju AU - Yu, Xin AU - Zhang, Tianfu AU - Wen, Xiaodong AU - Yang, Yong AU - Li, Yong-Wang AU - (Hans) Niemantsverdriet, J.W. AU - (Kees-Jan) Weststrate, C.J. TI - Similarities and trends in adsorbate induced reconstruction – Structure and stability of FCC iron and cobalt surface carbides JF - APPLIED SURFACE SCIENCE J2 - APPL SURF SCI VL - 626 PY - 2023 SN - 0169-4332 DO - 10.1016/j.apsusc.2023.157245 UR - https://m2.mtmt.hu/api/publication/33767593 ID - 33767593 LA - English DB - MTMT ER - TY - JOUR AU - Gubó, Eduard AU - Kiss-Szarvák, Ildikó AU - Erdenebaatar, Mishele AU - Gubó, Richard AU - Horváth, Bence AU - Szakál, Pál AU - Plutzer, Judit TI - Ecotoxicological investigations of milking cow slurry and changes of oestrogenic compounds in the solid and liquid phase JF - Energy, Ecology and Environment J2 - Energy, Ecology and Environment VL - 7 PY - 2022 IS - 2 SP - 97 EP - 110 PG - 14 SN - 2363-7692 DO - 10.1007/s40974-021-00234-1 UR - https://m2.mtmt.hu/api/publication/32500116 ID - 32500116 LA - English DB - MTMT ER - TY - THES AU - Gubó, Richard TI - Oxid-fém kölcsönhatás és ötvöződési folyamatok vizsgálata Rh(111) és TiO2(110) felületeken pásztázó alagútmikroszkópiával [Investigation of oxide-metal interaction and alloying processes on Rh(111) and TiO2(110) with scanning tunnelling microscopy] PB - Szegedi Tudományegyetem (SZTE) PY - 2021 SP - 112 DO - 10.14232/phd.10489 UR - https://m2.mtmt.hu/api/publication/32477593 ID - 32477593 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szitás, Ádám AU - Gubó, Richard AU - Pásztor, Tibor AU - Farkas, Arnold Péter AU - Ajtai, Tibor AU - Óvári, László AU - Palotás, Krisztián AU - Berkó, András AU - Kónya, Zoltán TI - Adsorption of Azobenzene on Hexagonal Boron Nitride Nanomesh Supported by Rh(111) JF - JOURNAL OF PHYSICAL CHEMISTRY C J2 - J PHYS CHEM C VL - 124 PY - 2020 IS - 26 SP - 14182 EP - 14194 PG - 13 SN - 1932-7447 DO - 10.1021/acs.jpcc.0c01725 UR - https://m2.mtmt.hu/api/publication/31388984 ID - 31388984 LA - English DB - MTMT ER - TY - JOUR AU - Gubó, Richard AU - Lukovics, Miklós AU - Nádas, Nikoletta TI - A junior kutatók felelősségteljes innováció iránti fogékonyságának vizsgálata eltérő innovációs környezetben JF - TÉR-GAZDASÁG-EMBER J2 - TÉR GAZDASÁG EMBER VL - 7 PY - 2019 IS - 2-3 SP - 9 EP - 29 PG - 21 SN - 2064-1176 UR - https://m2.mtmt.hu/api/publication/30836817 ID - 30836817 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Palotás, Krisztián AU - Óvári, László AU - Vári, Gábor AU - Gubó, Richard AU - Farkas, Arnold Péter AU - Kiss, János AU - Berkó, András AU - Kónya, Zoltán TI - Au–Rh Surface Structures on Rh(111): DFT Insights into the Formation of an Ordered Surface Alloy JF - JOURNAL OF PHYSICAL CHEMISTRY C J2 - J PHYS CHEM C VL - 122 ET - 0 PY - 2018 IS - 39 SP - 22435 EP - 22447 PG - 13 SN - 1932-7447 DO - 10.1021/acs.jpcc.8b05744 UR - https://m2.mtmt.hu/api/publication/3422662 ID - 3422662 AB - Surface alloying is an important technique to change chemical properties. In this study, by employing density functional theory (DFT) calculations, the atomic arrangements and energetics of an extensive set of Au–Rh structures in a confined (2 × 1) surface cell on a Rh(111) substrate are investigated. An ordered surface alloy layer composed of 50% Au and 50% Rh is identified as the energetically favored structure, which corresponds to a configuration proposed previously based on scanning tunneling microscopy (STM) imaging [Óvári et al. PCCP 2016, 18, 25230]. Comparing this surface alloy with another candidate structure in terms of Rh and Au adsorption characteristics, the bonding preference among Rh and Au species is recovered. DFT-based simulated STM images reveal bias-voltage-dependent contrast differences among selected corrugated surface layer structures at various Au coverages. Furthermore, several new experimental results obtained by STM and low energy ion scattering (LEIS) on the thermally induced formation of the ordered Au–Rh surface alloy are also presented in this work. Our calculation approach and results are expected to contribute to the understanding of the formation of metallic surface alloys of various chemical compositions. LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Arnold Péter AU - Szitás, Ádám AU - Vári, Gábor AU - Gubó, Richard AU - Óvári, László AU - Berkó, András AU - Kiss, János AU - Kónya, Zoltán TI - Effect of Gold on the Adsorption Properties of Acetaldehyde on Clean and h-BN Covered Rh(111) Surface JF - TOPICS IN CATALYSIS J2 - TOP CATAL VL - 61 PY - 2018 IS - 12-13 SP - 1247 EP - 1256 PG - 10 SN - 1022-5528 DO - 10.1007/s11244-018-0979-1 UR - https://m2.mtmt.hu/api/publication/3370969 ID - 3370969 N1 - MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Dóm tér 7, Szeged, 6720, Hungary Extreme Light Infrastructure-ALPS, ELI-HU Non-profit Ltd., Dugonics tér 13, Szeged, 6720, Hungary Department of Applied and Environmental Chemistry, University of Szeged, Aradi Vértanúk tere 1, Szeged, 6720, Hungary Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1, Szeged, 6720, Hungary Cited By :4 Export Date: 11 May 2022 Correspondence Address: Farkas, A.P.; Extreme Light Infrastructure-ALPS, Dugonics tér 13, Hungary; email: arnold.farkas@chem.u-szeged.hu AB - Auger electron spectroscopy, high-resolution electron energy loss spectroscopy and temperature programmed desorption methods have been used in order to investigate the adsorption properties and reactions of acetaldehyde on gold decorated rhodium and BN/Rh(111) surfaces. Scanning tunneling microscopy and X-ray photoelectron spectroscopy measurements were carried out to characterize the gold nanoparticles on clean and hexagonal boron nitride (h-BN) covered Rh(111). The adsorption of acetaldehyde was not completely hindered by gold atoms; however, depending on the structure of the outermost bimetallic layer (surface alloy) the dissociation of the parent molecule was suppressed, namely the production of carbon monoxide was inhibited by the gold domains. Our measurements with acetaldehyde on Au/h-BN/Rh(111) confirmed the observation that the lack of suitable adsorption sites eliminates the formation of CO. Nevertheless, increased coverage of gold enhanced the amount of adsorbed aldehyde at low temperature. We may predict that the low reactivity of acetaldehyde on Au/h-BN/Rh(111) significantly determine the ethanol decomposition mechanism on this surface. LA - English DB - MTMT ER - TY - JOUR AU - Gubó, Richard AU - Vári, Gábor AU - Kiss, János AU - Farkas, Arnold Péter AU - Palotás, Krisztián AU - Óvári, László AU - Berkó, András AU - Kónya, Zoltán TI - Tailoring the hexagonal boron nitride nanomesh on Rh(111) with gold JF - PHYSICAL CHEMISTRY CHEMICAL PHYSICS J2 - PHYS CHEM CHEM PHYS VL - 20 PY - 2018 IS - 22 SP - 15473 EP - 15485 PG - 13 SN - 1463-9076 DO - 10.1039/C8CP00790J UR - https://m2.mtmt.hu/api/publication/3368595 ID - 3368595 AB - It is known that the hexagonal boron nitride (h-BN) monolayer has a periodically corrugated structure on Rh(111), termed "nanomesh", while the h-BN layer is planar on close packed surfaces of coinage metals (Cu, Ag, Au) due the weak interaction. Our studies aimed at understanding the metal-h-BN interaction, when both Rh and Au are present. On the one hand, the growth and thermal properties of gold deposited on h-BN nanomesh prepared on Rh(111) was studied. On the other hand, the formation of h-BN was examined on Au/Rh surface alloys prepared by the deposition of Au on Rh(111) and subsequent annealing at 1000 K. In each case, the h-BN was prepared by the decomposition of borazine at about 1000 K. Low energy ion scattering (LEIS), X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM) measurements revealed that the growth of Au on h-BN/Rh(111) at room temperature leads to the formation of mainly three dimensional (3D) gold nanoparticles, although at low coverages (< 0.2 ML) 2D particles formed as well. Stepwise annealing to higher temperatures induces the intercalation of Au below the nanomesh, which was complete at around 1050 K. Some agglomeration and desorption of Au also took place. Interestingly, the nanomesh structure was observable after intercalation up to relatively large Au coverages. Measurements performed in the reverse order, namely exposing a Au/Rh(111) surface alloy to borazine, revealed that Rh atoms get covered by h-BN (or by its precursors) at significantly smaller borazine exposures than Au atoms. The nanomesh structure was essentially present up to a gold coverage of 0.9 ML, but with a smaller pore diameter, while it gradually disappeared at higher gold amounts. This way the application of surface alloy supports provides a key for gradual tuning of the mesh morphology. Density functional theory calculations confirmed the decreased pore diameter of the BN layer upon the formation of a surface Rh-Au alloy layer. LA - English DB - MTMT ER - TY - JOUR AU - Gubó, Richard AU - Chi, M Yim AU - Michael, Allan AU - Chi, L Pang AU - Berkó, András AU - Geoff, Thornton TI - Variation of SMSI with the Au:Pd Ratio of Bimetallic Nanoparticles on TiO2(110) JF - TOPICS IN CATALYSIS J2 - TOP CATAL VL - 61 PY - 2018 IS - 5-6 SP - 308 EP - 317 PG - 10 SN - 1022-5528 DO - 10.1007/s11244-017-0854-5 UR - https://m2.mtmt.hu/api/publication/3317282 ID - 3317282 LA - English DB - MTMT ER - TY - JOUR AU - Mutombo, P AU - Gubó, Richard AU - Berkó, András TI - Interaction of Gold with a Pinwheel TiO similar to 1.2 Film Formed on Rh(111) Facet: STM and DFT Studies JF - JOURNAL OF PHYSICAL CHEMISTRY C J2 - J PHYS CHEM C VL - 120 PY - 2016 IS - 23 SP - 12917 EP - 12923 PG - 7 SN - 1932-7447 DO - 10.1021/acs.jpcc.6b03959 UR - https://m2.mtmt.hu/api/publication/3110742 ID - 3110742 LA - English DB - MTMT ER -