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Synthesis and Properties of Monometallic and Bimetallic Silver and Gold Nanoparticles

Published online by Cambridge University Press:  31 January 2011

Xavier Enrique Guerrero Dib ,
Ubaldo Ortiz-Méndez ,
Selene Sepúlveda-Guzmán ,
Oxana Vasilievna Kharisova ,
Domingo Ferrer  and
Miguel José-Yacamán
Xavier Enrique Guerrero Dib
Affiliation:
xavier.guerrerod@uvmnet.edu, Universidad del Valle de México, Ingeniería, Monterrey, Mexico
Ubaldo Ortiz-Méndez
Affiliation:
ubaldo.ortiz@uanl.mx, Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, San Nicolás de los Garza, Nuevo León, Mexico
Selene Sepúlveda-Guzmán
Affiliation:
selenura@gmail.com, Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, San Nicolás de los Garza, Nuevo León, Mexico
Oxana Vasilievna Kharisova
Affiliation:
okhariss@gmail.com, Universidad Autónoma de Nuevo León, FCFM, San Nicolás de los Garza, Nuevo León, Mexico
Domingo Ferrer
Affiliation:
dferrer@che.utexas.edu, University of Texas at Austin, Chemical Engineering, Austin, Texas, United States
Miguel José-Yacamán
Affiliation:
yacaman@che.utexas.edu, University of Texas at San Antonio, Chemical Enginnering, San Antonio, Texas, United States
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Abstract

Synthesis of Au, Ag monometallic, and Au-Ag bimetallic nanoparticles have been synthesized by successive reduction of metal salts with ascorbic acid on prefabricated seeds in the presence of cetyltrimethylammonium bromide (C16H33)N(CH3)3Br (CTAB), as a cationic surfactant, is presented in this paper. This coverage method for the prefabricated seeds is uniform, although in some cases deviations from a spherical shape are observed with the formation of nanorods or nanoprisms. Results using high-resolution STEM-XEDS elemental mapping suggest that the actual distribution of the two metals within the multilayer spheres may involve partial alloying of the metals.

Keywords

nanoscaletransmission electron microscopy (TEM)magnetic properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1207: Symposium N – Colloidal Nanoparticles for Electronic Applications — Light Emission, Detection, Photovoltaics and Transport , 2009 , 1207-N10-62
Copyright
Copyright © Materials Research Society 2010

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