Enhanced Methanol Oxidation and CO Tolerance Using CeO₂-Added Eggshell Membrane-Templated Pd Network Electrocatalyst

Author(s)

Qunwei Tang
Zhengping Mao, University of South Carolina - ColumbiaFollow
Shuguo Ma
Kevin Huang, University of South Carolina - ColumbiaFollow

Document Type

Article

Abstract

Macroporous Pd and CeO₂-added Pd network catalysts have been synthesized using eggshell membrane (ESM) as a template for enhanced methanol oxidation and CO tolerance. The microstructural characterization revealed a hierarchically ordered macroporous network of Pd reproducing the fibrous structure of ESM for a Pd-only catalyst, and a flower-like CeO₂-decorated Pd morphological architecture for the CeO₂-added Pd catalyst synthesized by a precipitation method. XRD patterns indicated Pd and CeO₂ phases with good crystallinity. The cyclic voltammetry studies showed an enhanced electrocatalytic activity for methanol oxidation in acidic aqueous medium. Because of the preferential formation of Ce–CO bonds over Pd–CO bonds, the incorporation of CeO₂ into Pd-based catalysts results in an increased CO tolerance, making it a robust catalyst for methanol oxidation in direct methanol fuel cells.

Publication Info

Published in RSC Advances, Volume 2, Issue 30, 2012, pages 11465-11471.

Rights

©RCS Advances 2012, Royal Society of Chemistry.

This article cannot be redistributed or further made available.

This article was first published by the Royal Society of Chemistry and can be found at http://dx.doi.org/10.1039/C2RA21189K

Tang, Q., Mao, Z., Ma, S., & Huang, K. (2012). Enhanced Methanol Oxidation and CO Tolerance Using CeO₂-Added Eggshell Membrane-Templated Pd Network Electrocatalyst. RSC Advances, 2 (30), 11465 - 11471. http://dx.doi.org/10.1039/C2RA21189K