Straightforward Synthesis of Carbon-Supported Ag Nanoparticles and Their Application for the Oxygen Reduction Reaction
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
30/10/2013
30/10/2013
2012
|
| Resumo |
In this paper we report a simple and environmentally friendly synthesis of silver nanoparticles (AgNps) and their activities towards the oxygen reduction reaction (ORR). Ultraviolet spectroscopy (UV-vis) and transmission electron microscopy confirmed the formation of poly(vinyl pyrrolidone)-protected colloidal AgNps through direct reduction of Ag+ by glycerol in alkaline medium at room temperature. For the ORR tests, the AgNps were directly produced onto carbon to yield the Ag/C catalyst. Levich plots revealed the process to occur via 2.7 electrons, suggesting that the carbon support contributes to the ORR. We discuss here possibilities of improving the catalytic properties of the Ag/C for ORR by optimizing the parameters of the synthesis. CNPq FAPESP |
| Identificador |
ELECTROCATALYSIS, NEW YORK, v. 3, n. 2, supl. 4, Part 1-2, pp. 147-152, JUN, 2012 1868-2529 http://www.producao.usp.br/handle/BDPI/36977 10.1007/s12678-012-0096-z |
| Idioma(s) |
eng |
| Publicador |
SPRINGER NEW YORK |
| Relação |
ELECTROCATALYSIS |
| Direitos |
closedAccess Copyright SPRINGER |
| Palavras-Chave | #SILVER NANOPARTICLES #GLYCEROL #ALKALINE MEDIUM #OXYGEN REDUCTION #CHLORINE-SODA ELECTROLYTE #ALKALINE-MEDIUM #FUEL-CELLS #SILVER #ELECTROREDUCTION #DIFFUSIVITY #SOLUBILITY #CATALYSTS #PLATINUM #METHANOL #CHEMISTRY, PHYSICAL #ELECTROCHEMISTRY |
| Tipo |
article original article publishedVersion |
