Journal
THIN SOLID FILMS
Volume 584, Issue -, Pages 98-102Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2014.12.016
Keywords
Carbon nanotubes; Platinum; Platinum-ruthenium; Pulse electrodeposition; Citric acid; Sulfuric acid; Methanol oxidation
Categories
Funding
- National Science Council Taiwan [NSC 101-2221-E-007-047-MY3]
Ask authors/readers for more resources
In this study, platinumnanoparticle/carbon nanotube (Pt NP/CNT) and platinum-ruthenium nanoparticle (Pt-Ru NP/CNT) hybrid nanocatalysts were prepared by the pulse-electrodeposition method in different aqueous solutions containing citric acid (CA) or sulfuric acid (SA). The electrocatalytic properties of the Pt NP/CNT and Pt-Ru NP/CNT electrodes prepared using different aqueous solutions were investigated for methanol oxidation. The results show that the electrochemical mass activities of these hybrid nanocatalysts prepared in the CA aqueous solution were increased by factors of 1.46 and 2.77 for Pt NPs and Pt-Ru NPs, respectively, compared with those prepared in SA aqueous solutions using the same procedure. These increased mass activities are attributed to the CA playing dual roles as both a stabilizing agent and a particle size reducing agent in the aqueous solutions. The approach developed in this work enables further reductions in the particle sizes of noble-metal nanocatalysts. (C) 2014 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available