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Straightforward Synthesis of Carbon-Supported Ag Nanoparticles and Their Application for the Oxygen Reduction Reaction

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Abstract

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.

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Acknowledgments

The authors thank CNPq and FAPESP for the overall support of this research. We would also like to thank Cleiton Pires for the assistance in the UV–vis experiments.

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Authors and Affiliations

  1. Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense 400, 13560-970, P.O. Box 780, São Carlos, São Paulo, Brazil

    Amanda C. Garcia, Luiz H. S. Gasparotto, Janaina F. Gomes & Germano Tremiliosi-Filho

  2. Departamento de Engenharia Química, Universidade Federal de São Carlos, Rodovia Washington Luís km 235, 13565-905, São Carlos, São Paulo, Brazil

    Amanda C. Garcia

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  1. Amanda C. Garcia
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  2. Luiz H. S. Gasparotto
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  3. Janaina F. Gomes
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  4. Germano Tremiliosi-Filho
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Correspondence to Amanda C. Garcia.

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Garcia, A.C., Gasparotto, L.H.S., Gomes, J.F. et al. Straightforward Synthesis of Carbon-Supported Ag Nanoparticles and Their Application for the Oxygen Reduction Reaction. Electrocatalysis 3, 147–152 (2012). https://doi.org/10.1007/s12678-012-0096-z

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