Abstract
By citrate reduction of HAuCl4, Au nanoparticles with a diameter of 15 nm and low polydispersity were synthesized. By deposition and subsequent dissolution of PbO2 in an alkaline medium, the particles were cleaned from their organic capping agents. The electrocatalytic behavior towards methanol oxidation under alkaline condition of these particles was found to be substantially enhanced by the cleaning procedure. The origin of the enhancement was studied by comparing the voltammetric profiles of the cleaned nanoparticles prior and after treatment with diluted nitric acid. The reason for the enhancement is mainly the removal of the organic shell. No hints of contributions of residual Pb and/or PbO2 from the cleaning process on the particle’s surface to the enhancement were found.
| Original language | English |
|---|---|
| Pages (from-to) | 106-113 |
| Number of pages | 8 |
| Journal | Electrocatalysis |
| Volume | 2 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 2011 |
Fields of science
- 104005 Electrochemistry
- 104006 Solid state chemistry
- 104014 Surface chemistry
- 104017 Physical chemistry
- 105113 Crystallography
- 105116 Mineralogy
- 503013 Subject didactics of natural sciences
- 204 Chemical Process Engineering
- 204001 Inorganic chemical technology
- 205016 Materials testing
- 210006 Nanotechnology
- 211104 Metallurgy
JKU Focus areas
- Engineering and Natural Sciences (in general)
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