Platinum nanoparticles encapsulated in carbon microspheres: toward electro-catalyzing glucose with high activity and stability

Niu, Xiangheng, Zhao, Hongli, Lan, Minbo and Zhou, Liang (2015) Platinum nanoparticles encapsulated in carbon microspheres: toward electro-catalyzing glucose with high activity and stability. Electrochimica Acta, 151 326-331. doi:10.1016/j.electacta.2014.11.024

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Author Niu, Xiangheng
Zhao, Hongli
Lan, Minbo
Zhou, Liang
Title Platinum nanoparticles encapsulated in carbon microspheres: toward electro-catalyzing glucose with high activity and stability
Journal name Electrochimica Acta   Check publisher's open access policy
ISSN 0013-4686
1873-3859
Publication date 2015-01-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.electacta.2014.11.024
Open Access Status
Volume 151
Start page 326
End page 331
Total pages 6
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2015
Language eng
Formatted abstract
Electro-oxidizing glucose effectively is well known as the critical point in developing analytical sensors and carbohydrate-based fuel cells. Here we prepared a new electrode material, platinum nanoparticles encapsulated in carbon microspheres (Pt/GSH), to promote the glucose electrocatalytic oxidation reaction in neutral media. The Pt/GSH composite was synthesized by using a simple hydrothermal method, with reduced glutathione (R-GSH) as the capping agent and reductant simultaneously, followed by a calcination process. It was found that the obtained Pt particles with a mean size of 26.8 nm were well dispersed in the interconnected carbon microspheres, providing a stable and efficient catalytic platform for glucose electro-oxidation. As a result, the synthesized catalyst exhibited higher activity for electro-catalyzing glucose compared to commercial Pt black and Pt/C catalysts, with a mass activity of 15.4 μA μg−1Pt, approximately 13 times of Pt black and 2.1 times of Pt/C. Besides, due to the decreased dissolution and agglomeration of Pt NPs in the carbon-encapsulated structure, the Pt/GSH catalyst kept quite stable activity upon reuse even in the presence of chloride ions.
Keyword Pt NPs encapsulated in carbon microspheres
Electrocatalysis
Glucose oxidation
High mass activity
Stability
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 6 Nov 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
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