Issue 3, 2016

Concave and duck web-like platinum nanopentagons with enhanced electrocatalytic properties for formic acid oxidation

Abstract

Pt-branched structures featuring concave and duck web-like nanopentagons (CWPNP), with surfaces enclosed by {111} facets, high-energy {110} and {554} facets, multiple twin boundaries, duck web-like edges and inherent anisotropic branches are herein reported. The unique chemisorption properties and reducing capacities of tri-n-propylamine and oleylamine, as well as the inhibition of oxidative etching of the twin defects by the exclusion of chloride ions contribute to the formation of Pt CWPNP. Pt CWPNP exhibited unprecedented electrocatalytic activities, high antipoisoning activity and durability in formic acid oxidation reaction (FOR) in comparison to commercial Pt/C and Pt black, and thus is a promising catalyst for the FOR. The excellent FOR performance of Pt CWPNP is attributed to the least poisoned {111} facets, active sites by high-energy facets, multiple twin boundaries, duck web-like edges and inherent anisotropic branches composed of 1D nanowires. It is anticipated that this study will offer a new approach for the design of surface structure-controlled FOR electrocatalysts.

Graphical abstract: Concave and duck web-like platinum nanopentagons with enhanced electrocatalytic properties for formic acid oxidation

Supplementary files

Article information

Article type
Communication
Submitted
04 Nov 2015
Accepted
03 Dec 2015
First published
03 Dec 2015

J. Mater. Chem. A, 2016,4, 807-812

Author version available

Concave and duck web-like platinum nanopentagons with enhanced electrocatalytic properties for formic acid oxidation

J. Lai, W. Niu, S. Li, F. Wu, R. Luque and G. Xu, J. Mater. Chem. A, 2016, 4, 807 DOI: 10.1039/C5TA08882H

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