NDLI: Electrodeposition of Pt Nanoparticles on New Porous Graphitic Carbon Nanostructures Prepared from Biomass for Fuel Cell and Methanol Sensing Applications

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Electrodeposition of Pt Nanoparticles on New Porous Graphitic Carbon Nanostructures Prepared from Biomass for Fuel Cell and Methanol Sensing Applications

Content Provider	Springer Nature Link
Author	Afraz, Ahmadreza Rafati, Amir Abbas Hajian, Ali Khoshnood, Maryam
Copyright Year	2014
Abstract	We investigate the performance of an iron-doped porous graphitic carbon nanostructure (GCN) prepared from biomass for application in fuel cells and electrochemical sensors. By using cyclic voltammetry (CV), we show that these GCNs have appropriate electrochemical properties and exhibit a significantly high catalytic activity toward oxygen reduction without Pt catalyst. The GCNs were also used as a substrate for electrodeposition of Pt nanoparticles (Pt-NPs) to study electro-oxidation and sensing of methanol. The composition of Pt-NPs and GCNs show high catalytic affinity toward electro-oxidation of methanol in an acidic medium. The modified electrode with Pt-NPs and GCNs also could act as an effective sensor for determination of methanol concentration in natural pH. This sensor enables determination of methanol with a wide linear range (0.05–21.73 mM), low detection limit (20 μM, at S/N of 3), high sensitivity (11.49 μA cm$^{−2}$ mM$^{−1}$), and long-term stability (over 40 days). The present sensor also has low working potential (0.17 V) making it less prone to an interference effect. The resulting electrodes were characterized by using scanning electron microscopy, energy dispersive X-ray spectroscopy, and CV.
Starting Page	220
Ending Page	228
Page Count	9
File Format	PDF
ISSN	18682529
Journal	Electrocatalysis
Volume Number	6
Issue Number	2
e-ISSN	18685994
Language	English
Publisher	Springer US
Publisher Date	2014-10-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon nanostructure Porous carbon Fuel cell Methanol sensor Platinum nanoparticle Electrochemistry Physical Chemistry Catalysis Energy Technology
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

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