Synthesis, characterization, and growth simulations of Cu–Pt bimetallic nanoclusters

Khanal, Subarna y Spitale, Ana y Bhattarai, Nabraj y Bahena, Daniel y Velázquez Salazar, J. Jesús y Mejía Rosales, Sergio y Mariscal, Marcelo M. y Yacamán, Miguel José (2014) Synthesis, characterization, and growth simulations of Cu–Pt bimetallic nanoclusters. Beilstein journal of nanotechnology, 5. pp. 1371-1379. ISSN 2190-4286

[img]
Vista previa
Texto
Synthesis, characterization, and growth simulations of Cu–Pt bimetallic nanoclusters.pdf - Versión Aceptada
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB) | Vista previa

Resumen

Highly monodispersed Cu–Pt bimetallic nanoclusters were synthesized by a facile synthesis approach. Analysis of transmission electron microscopy (TEM) and spherical aberration (Cs)-corrected scanning transmission electron microscopy (STEM) images shows that the average diameter of the Cu–Pt nanoclusters is 3.0 ± 1.0 nm. The high angle annular dark field (HAADF-STEM) images, intensity profiles, and energy dispersive X-ray spectroscopy (EDX) line scans, allowed us to study the distribution of Cu and Pt with atomistic resolution, finding that Pt is embedded randomly in the Cu lattice. A novel simulation method is applied to study the growth mechanism, which shows the formation of alloy structures in good agreement with the experimental evidence. The findings give insight into the formation mechanism of the nanosized Cu–Pt bimetallic catalysts.

Tipo de elemento: Article
Palabras claves no controlados: Cu–Pt clusters, Energy dispersive X-ray spectroscopy (EDX), Grand-canonical Langevin dynamics, Nanoalloys, Scanning transmission electron microscopy (STEM)
Materias: Q Ciencia > Q Ciencias en General
Q Ciencia > QC Física
Q Ciencia > QD Química
Divisiones: Centro de Investigación en Ciencias Físico Matemáticas
Usuario depositante: Dr. Sergio J. Mejia Rosales
Creadores:
CreadorEmailORCID
Khanal, SubarnaNO ESPECIFICADONO ESPECIFICADO
Spitale, AnaNO ESPECIFICADONO ESPECIFICADO
Bhattarai, NabrajNO ESPECIFICADONO ESPECIFICADO
Bahena, DanielNO ESPECIFICADONO ESPECIFICADO
Velázquez Salazar, J. JesúsNO ESPECIFICADONO ESPECIFICADO
Mejía Rosales, SergioNO ESPECIFICADONO ESPECIFICADO
Mariscal, Marcelo M.marcelo.mariscal@conicet.gov.arNO ESPECIFICADO
Yacamán, Miguel Josémiguel.yacaman@utsa.eduNO ESPECIFICADO
Fecha del depósito: 09 Feb 2016 21:25
Última modificación: 06 Dic 2016 15:36
URI: http://eprints.uanl.mx/id/eprint/8909

Actions (login required)

Ver elemento Ver elemento

Downloads

Downloads per month over past year