synthesis and electrocatalytic activity towards oxygen reduction reaction of gold-nanostars

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ID: 225094
2018
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Abstract
The oxygen reduction reaction (ORR) is a characteristic reaction which determines the performance of fuel cells which convert a chemical energy into an electrical energy. Aims of this study are to synthesize Au-based nanostars (AuNSs) and determine their preliminary electro-catalytic activities towards ORR by a rotating-disk electrode method in alkaline electrolyte. The images obtained from a scanning electron microscope (SEM) and a transmission electron microscope (TEM) analyses confirm the formation of the star-shaped nanoparticles. Among the investigated nanostar catalysts, an AuNS5 with smaller size and a few branches showed the higher electrocatalytic activity towards ORR than other catalysts with a bigger size. In addition, the electron numbers transferred for all the catalysts are approximately two. The present study results infer that the size of the Au-based nanostars may influence greatly on their catalytic activity. The present study results show that the further improvement is needed for Au-based nanostar catalysts towards the ORR reaction.
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g2018mongoliansynthesis Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Oyunbileg G, Batnyagt G, Enkhsaruul B, T Takeguchi
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Journal tehran university medical journal
Year 2018
DOI
10.5564/mjc.v18i44.935
URL
https://www.mongoliajol.info/index.php/MJC/article/view/935
Keywords
Fuel cell oxygen reduction reaction

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