Journal
APPLIED SURFACE SCIENCE
Volume 420, Issue -, Pages 700-706Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.05.222
Keywords
Pt nanoparticle; Direct liquid fuel cells; Hydrazine; Strong acidic solution; XPS
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Funding
- National Research Foundation of Korea [21A20151513130] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Graphene-oxide-supported Pt (GO-Pt) nanoparticles were prepared by performing diimide-activated amidation and used in an electrocatalyst for hydrazine electro-oxidation in 0.5 M H2SO4 solution. The physico-chemical properties of the GO-Pt nanoparticles were characterized with various techniques, which revealed that highly dispersed Pt nanoparticles with an average size of 2.6 nm were densely deposited on the amidated GO due to their strong adhesion. Cyclic voltammograms were obtained and demonstrate that the GO-Pt catalyst exhibits significantly improved catalytic activity and long-term stability in hydrazine electro-oxidation in a strong acidic solution when compared to commercial Pt/C and Pt metal electrodes. These enhanced electrochemical properties are attributed to the large electrochemically active surface area that results from the smaller size and excellent dispersion of the Pt nanoparticles on amidated GO. (C) 2017 Elsevier B.V. All rights reserved.
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