Výsledky vyhledávání - "Gloria Preda"

Initial Formation of Positively Charged Gold on MgO(001) Thin Films: Identification by Experiment and Structural Assignment by Theory

Autor: Gianfranco Pacchioni, Matthew A. Brown, Hans-Joachim Freund, Yuichi Fujimori, Franziska Ringleb, Martin Sterrer, Gloria Preda

Publikováno v: The Journal of Physical Chemistry C. 115:10114-10124

Infrared spectroscopy experiments using CO as a probe and X-rayphotoelectron spectroscopy were used to study the initial nucleation of gold on the surface of MgO(001)/Ag(001) thin films at 90 K. The most intense CO infrared signal observed at low gol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::393e0e89a0a682a4e79cf31e9a111617
https://doi.org/10.1021/jp201254s

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Nature of Ag Islands and Nanoparticles on the CeO2(111) Surface

Autor: Federico Pagliuca, Gloria Preda, Sergio Valeri, Gianfranco Pacchioni, Francesc Illas, Paola Luches

Publikováno v: Journal of physical chemistry. C 116 (2012): 1122–1132. doi:10.1021/jp210241c
info:cnr-pdr/source/autori:Paola Luches, Federico Pagliuca, Sergio Valeri, Francesc Illas, Gloria Preda, Gianfranco Pacchioni/titolo:Nature of Ag Islands and Nanoparticles on the CeO2(111) Surface/doi:10.1021%2Fjp210241c/rivista:Journal of physical chemistry. C/anno:2012/pagina_da:1122/pagina_a:1132/intervallo_pagine:1122–1132/volume:116

Ag nanoparticles have been deposited on stoichiometric and or reduced thin CeO2 films grown on Pt(111). The nucleation and growth of the Ag nanoparticles has been characterized by STM and XPS (X-ray photoemission spectroscopy) measurements complement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21bf60634cb4737799ed27c358bf307d
https://hdl.handle.net/11380/761860

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Formation of oxygen active species in Ag-modified CeO2 catalyst for soot oxidation: A DFT study

Autor: Gianfranco Pacchioni, Gloria Preda

In this paper, we analyze from a theoretical point of view, based on the existing literature and on specific first principles DFT calculations, some aspects of the reactivity of Ag-modified CeO2 surfaces used for soot combustion in particulate diesel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04966261b15fecf04b2cbb226dbe2a8c
http://hdl.handle.net/10281/31466

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Formation of Superoxide Anions on Ceria Nanoparticles by Interaction of Molecular Oxygen with Ce3+ Sites

Autor: Gianfranco Pacchioni, Stefan T. Bromley, Annapaola Migani, Gloria Preda, Konstantin M. Neyman, Francesc Illas

The exposure of reduced ceria, CeO2-x, to molecular oxygen results in the formation of peroxo, O22-, and superoxo, O2-, species. The formation of diamagnetic peroxo species is easily explained by the interaction of O2 with oxygen vacancies at the cer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3268d5d6273739bcbe331c1e3d6a573a
http://hdl.handle.net/10281/20796

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Formation of Superoxo Species by Interaction of O-2 with Na Atoms Deposited on MgO Powders: A Combined Continuous-Wave EPR (CW-EPR), Hyperfine Sublevel Correlation (HYSCORE) and DFT Study

Autor: Francesco Napoli, Elio Giamello, Gloria Preda, Gianfranco Pacchioni, Mario Chiesa, Cristiana Di Valentin

The formation of O(2) (-) radical anions by contact of O(2) molecules with a Na pre-covered MgO surface is studied by a combined EPR and quantum chemical approach. Na atoms deposited on polycrystalline MgO samples are brought into contact with O(2).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78bf020306218e7415e6f1dd3e2a54b6
http://hdl.handle.net/10281/20791

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Formation of CO(2)(-) Radical Anions from CO(2) Adsorption on an Electron-Rich MgO Surface: A Combined ab Initio and Pulse EPR Study

Autor: Elio Giamello, Mario Chiesa, Gianfranco Pacchioni, Gloria Preda

We report the results of DFT cluster model calculations on the formation of carboxylate radical anions, CO(2)(-), by reaction Of CO(2) with an electron rich MgO surface. The theoretical results are used in conjunction with new pulse electron paramagn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b63645674a39089dc4fcdac3d32d4c2
http://hdl.handle.net/10281/45285

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Akademický článek

Formation of Superoxo Species by Interaction of O2 with Na Atoms Deposited on MgO Powders: A Combined Continuous-Wave EPR (CW-EPR), Hyperfine Sublevel Correlation (HYSCORE) and DFT Study.

Autor: Napoli, Francesco, Chiesa, Mario, Giamello, Elio, Preda, Gloria, Di Valentin, Cristiana, Pacchioni, Gianfranco

Publikováno v: Chemistry - A European Journal; Jun2010, Vol. 16 Issue 23, p6776-6785, 10p

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Akademický článek

Contents.

Publikováno v: Physical Chemistry Chemical Physics (PCCP); Oct2009, Vol. 11 Issue 37, p8107-8118, 12p

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Akademický článek

The reactivity of CO2 with K atoms adsorbed on MgO powders.

Autor: Preda, Gloria, Pacchioni, Gianfranco, Chiesa, Mario, Giamello, Elio

Publikováno v: Physical Chemistry Chemical Physics (PCCP); Oct2009, Vol. 11 Issue 37, p8156-8164, 9p

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