On the structure of bimetallic noble metal nanoparticles as revealed by aberration corrected scanning transmission electron microscopy (STEM)

Authors

Alvaro Mayoral, Universidad de Zaragoza
Francis L Deepak, University Of Texas At San Antonio
Rodrigo Esparza, University Of Texas At San Antonio
Gilberto Casillas, University of Texas at San AntonioFollow
Cesar Magen, Universidad de Zaragoza
Eduardo Perez-Tijerina, Universidad Auto Noma De Nuevo Leo N
Miguel Jose-Yacaman, University of Texas at San Antonio

RIS ID

81431

Publication Details

Mayoral, A., Deepak, F., Esparza, R., Casillas, G., Magen, C., Perez-Tijerina, E. & Jose-Yacaman, M. (2012). On the structure of bimetallic noble metal nanoparticles as revealed by aberration corrected scanning transmission electron microscopy (STEM). Micron, 43 (4), 557-564.

Abstract

In the present manuscript we present the feasibility of two different routes to obtain metal nanoparticles: (1) inert gas deposition technique (IGC) and (2) chemical routes. These two routes can enable the production of metal nanoparticles with a well-controlled size and shape distribution. In addition, Co/Au and Pd/Au nanoparticles have been deposited on three different grids with the aim of studying the coalescence of the different metals. The as-synthesized materials, that initially were forming isolated, core-shell, were sintered by thermal treatment (Co/Au) or by strong electron beam irradiation and the subsequent characterization was carried out in situ in an aberration corrected STEM.