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Structural Evolution of the Rhodium-Doped Silver Clusters AgnRh (n ≤ 15) and Their Reactivity toward NO

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Date
2017
Author
Rodríguez-Kessler P.L.
Pan S.
Florez E.
Cabellos J.L.
Merino G.
Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida, Apdo. Postal 73, Cordemex, Mérida, Yucatán, Mexico
Departamento de Facultad de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia

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TY - GEN T1 - Structural Evolution of the Rhodium-Doped Silver Clusters AgnRh (n ≤ 15) and Their Reactivity toward NO AU - Rodríguez-Kessler P.L. AU - Pan S. AU - Florez E. AU - Cabellos J.L. AU - Merino G. Y1 - 2017 UR - http://hdl.handle.net/11407/4250 PB - American Chemical Society AB - ER - @misc{11407_4250, author = {Rodríguez-Kessler P.L. and Pan S. and Florez E. and Cabellos J.L. and Merino G.}, title = {Structural Evolution of the Rhodium-Doped Silver Clusters AgnRh (n ≤ 15) and Their Reactivity toward NO}, year = {2017}, abstract = {}, url = {http://hdl.handle.net/11407/4250} }RT Generic T1 Structural Evolution of the Rhodium-Doped Silver Clusters AgnRh (n ≤ 15) and Their Reactivity toward NO A1 Rodríguez-Kessler P.L. A1 Pan S. A1 Florez E. A1 Cabellos J.L. A1 Merino G. YR 2017 LK http://hdl.handle.net/11407/4250 PB American Chemical Society AB OL Spanish (121)
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Abstract
Structural properties of AgnRh (n ≤ 15) clusters are investigated using a successive growth algorithm coupled with density functional theory computations. The structures of the clusters are revisited, including a detailed discussion of their electronic properties. In contrast to these previous contributions, the lowest energy structures of the clusters are planar for n = 3-6, while three-dimensional for n = 7 onward. Our present searches identify new lowest energy structures for n = 3-6 and 9-13. The most stable isomers are selected to study the adsorption of NO. The size-dependent reactivity of the clusters indicates that Rh atom acts as a more effective adsorption site for NO than Ag. Since the transition from Rh-exposed to Rh-encapsulated structures occurs at n = 9, the reactivity toward NO for AgnRh clusters with n ≤ 8 is considerably higher than that for the larger homologues. Further, the results show that doping Agn clusters with Rh increases the reactivity toward NO adsorption. © 2017 American Chemical Society.
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http://hdl.handle.net/11407/4250
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