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Characterization Microstructural and Electrochemical of AgPd Alloy Bimetallic Nanoparticles

Published online by Cambridge University Press:  05 September 2017

A. Santoveña ,
C. Rodriguez-Proenza ,
J.A. Maya-Cornejo ,
A. Ruiz-Baltazar ,
D. Bahena ,
J. Ledesma ,
R. Pérez  and
R. Esparza
A. Santoveña
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro76230, México.
C. Rodriguez-Proenza
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro76230, México.
J.A. Maya-Cornejo
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro76230, México.
A. Ruiz-Baltazar
Affiliation:
CONACYT, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro76230, México
D. Bahena
Affiliation:
Laboratorio Avanzado de Nanoscopía Electrónica (LANE), Centro de Investigación y de Estudios Avanzados del I.P.N., Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco, México D.F., 07360, México.
J. Ledesma
Affiliation:
División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, 76010, Qro., México
R. Pérez
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro76230, México.
R. Esparza*
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro76230, México.
*
*Email: resparza@fata.unam.mx

Abstract

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Bimetallic nanoparticles are of special interest for their potential applications to fuel cells, among the bimetallic systems, AuPd bimetallic nanoparticles have received great interest as they can be widely used as effective catalysts for various electrochemical reactions. Monodisperse AgPd alloy nanoparticles were synthesized by polyol method using silver nitrate and potassium tetrachloropalladate(II) in ethylene glycol as the reducing agent at 160 °C. Structural, compositional and electrochemical characterizations of synthesized bimetallic nanoparticles were investigated. High-angle annular dark field scanning/transmission electron microscopy (HAADF-STEM) images and parallel beam X-ray diffraction (XRD) of the bimetallic nanoparticles were obtained. XRD and the contrast of the HAADF-STEM images show that the bimetallic nanoparticles have an alloy structure. Cyclic voltammetry was carried out in order to confirm the electrochemical responses of the AgPd/C electrocatalysts for methanol oxidation. Thanks to the narrow size distribution of the AgPd alloy bimetallic nanoparticles (9.15 nm) the supported AgPd/C electrocatalysts have high catalytic activity toward methanol electro-oxidation.

Keywords

NanostructureX-ray diffractionScanning electron microscopy (SEM)
Type
Articles
Information
MRS Advances , Volume 2 , Issue 50: International Materials Research Congress XXV , 2017 , pp. 2857 - 2863
Copyright
Copyright © Materials Research Society 2017 

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