Cored, J.; Wang, M.; Akter, N.; Darbari, Z.; Xu, Y.; Karagoz, B.; Waluyo, I.... (2022). Water Formation Reaction under Interfacial Confinement: Al0.25Si0.75O2 on O-Ru(0001). Nanomaterials. 12(2):1-13. https://doi.org/10.3390/nano12020183
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/194392
Título:
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Water Formation Reaction under Interfacial Confinement: Al0.25Si0.75O2 on O-Ru(0001)
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Autor:
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Cored, Jorge
Wang, Mengen
Akter, Nusnin
Darbari, Zubin
Xu, Yixin
Karagoz, Burcu
Waluyo, Iradwikanari
Hunt, Adrian
Stacchiola, Dario
Head, Ashley Rose
Concepción Heydorn, Patricia
Lu, Deyu
Boscoboinik, Jorge Anibal
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Fecha difusión:
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Resumen:
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[EN] Confined nanosized spaces at the interface between a metal and a seemingly inert material, such as a silicate, have recently been shown to influence the chemistry at the metal surface. In prior work, we observed that ...[+]
[EN] Confined nanosized spaces at the interface between a metal and a seemingly inert material, such as a silicate, have recently been shown to influence the chemistry at the metal surface. In prior work, we observed that a bilayer (BL) silica on Ru(0001) can change the reaction pathway of the water formation reaction (WFR) near room temperature when compared to the bare metal. In this work, we looked at the effect of doping the silicate with Al, resulting in a stoichiometry of Al0.25Si0.75O2. We investigated the kinetics of WFR at elevated H-2 pressures and various temperatures under interfacial confinement using ambient pressure X-ray photoelectron spectroscopy. The apparent activation energy was lower than that on bare Ru(0001) but higher than that on the BL-silica/Ru(0001). The apparent reaction order with respect to H-2 was also determined. The increased residence time of water at the surface, resulting from the presence of the BL-aluminosilicate (and its subsequent electrostatic stabilization), favors the so-called disproportionation reaction pathway (*H2O + *O <-> 2 *OH), but with a higher energy barrier than for pure BL-silica.
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Palabras clave:
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Water formation reaction
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Ambient pressure X-ray photoelectron spectroscopy
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Density
functional theory
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Aluminosilicate bilayer film
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Reaction pathway
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Interfacial confinement
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Nanoreactor
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Derechos de uso:
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Reconocimiento (by)
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Fuente:
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Nanomaterials. (eissn:
2079-4991
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DOI:
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10.3390/nano12020183
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Editorial:
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MDPI AG
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Versión del editor:
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https://doi.org/10.3390/nano12020183
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Código del Proyecto:
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info:eu-repo/grantAgreement/MINECO//BES-2015-075748/ES/BES-2015-075748/
...[+]
info:eu-repo/grantAgreement/MINECO//BES-2015-075748/ES/BES-2015-075748/
info:eu-repo/grantAgreement/DOE//DE-SC0012704/
info:eu-repo/grantAgreement/DOE//DE-AC02-05CH11231/
info:eu-repo/grantAgreement/MINECO//BES-2015-075748//BES-2015-075748/
info:eu-repo/grantAgreement/MINECO//SEV-2016-0683//Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia/
info:eu-repo/grantAgreement/ACS PRF//61059-ND5/
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Agradecimientos:
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Research was carried out in part at the 23-ID-2 (IOS) beamline of the National Synchrotron Light Source II and the Center for Functional Nanomaterials, which are U.S. DOE Office of Science Facilities, and the Scientific ...[+]
Research was carried out in part at the 23-ID-2 (IOS) beamline of the National Synchrotron Light Source II and the Center for Functional Nanomaterials, which are U.S. DOE Office of Science Facilities, and the Scientific Data and Computing Center, a component of the Computational Science Initiative, at Brookhaven National Laboratory under Contract No. DE-SC0012704. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. J.C. thanks the Spanish Ministry of Science, Innovation and Universities for a "Severo Ochoa" grant (BES-2015-075748) through "Severo Ochoa" Excellence Programme (SEV-2016-0683). Z.D. is supported by ACS PRF grant #61059-ND5.
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Tipo:
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Artículo
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