Abstracts Book - IMRC 2018

• SC1-O019
STUDY OF THE FORMATION OF Cu@Pd CORE-SHELL
NANOPARTICLES USED FOR THE ELECTROOXIDATION OF
ALCOHOLS.
Jose Maya Cornejo 1 , Miriam Rocío Estévez González 2 , Josue David Mota Morales 1 , Rodrigo
Alonso Esparza Muñoz 1 , Ramiro Perez Campos 1
1 Centro de Física Aplicada y Tecnología Avanzada UNAM, Nanotecnología, Mexico. 2 Centro de
Física Aplicada y Tecnología Avanzada UNAM, Ingeniería Molecular de Materiales, Mexico.
The efforts to reduce the amount of palladium in the electrocatalytic materials
were focused in the development of synthesis of nanoparticles to obtain coreshell
structures. The use of copper as core became relevant due to its low cost
and their special electronic properties. In previous works we develop a
successful synthesis method to obtain Cu@Pd core-shell nanoparticles using
copper sulphate as precursor of copper, tetrachloropalladate of potassium as
precursor of palladium and ascorbic acid as reduction agent for the precursor
of copper. Also, the reduction agent was added in excess to achieve the
reduction of Cu 2+ ions. However, is important to know what is the appropriate
amount of ascorbic acid to reduce the Cu 2+ ions because, if we were added a
higher amount it could be probably that the palladium do not reduced in the
surface of the copper nanoparticles and in the best scenery the copper
nanoparticles it could be decorated with palladium. In this work we were studied
the reduction of the Cu 2+ ions and the formation of the Cu@Pd core-shell
nanoparticles with UV-Vis spectroscopy, scanning electronic microscope, X-Ray
photoelectron spectroscopy and X-Ray diffraction techniques. Once that the
Cu@Pd core-shell nanoparticles were obtained with the improvement of the
synthesis, there were compare with the first synthesis method using
electrochemical techniques for the electrooxidation of alcohols
Acknowledgment:
Gratefully acknowledgement to UNAM-DGAPA for the scholarship to develop
this project.
Keywords: Cu@Pd core-shell, nanoparticles, chemical reduction
Presenting authors email: iqm_jamc@yahoo.com.mx