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

被引：66

作者：

Garcia, Amanda C. ^{[1
,2
]}

Gasparotto, Luiz H. S. ^{[1
]}

Gomes, Janaina F. ^{[1
]}

Tremiliosi-Filho, Germano ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, Av Trabalhador Sao Carlense 400,POB 780, BR-13560970 Sao Paulo, Brazil

[2] Univ Fed Sao Carlos, Dept Engn Quim, BR-13565905 Sao Paulo, Brazil

来源：

ELECTROCATALYSIS | 2012年 / 3卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Silver nanoparticles; Glycerol; Alkaline medium; Oxygen reduction; CHLORINE-SODA ELECTROLYTE; ALKALINE-MEDIUM; FUEL-CELLS; SILVER; ELECTROREDUCTION; DIFFUSIVITY; SOLUBILITY; CATALYSTS; PLATINUM; METHANOL;

D O I：

10.1007/s12678-012-0096-z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：147 / 152

页数：6

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