NDLI: The electrochemical synthesis of Pt particles on ZrO<sub>2</sub>–ERGO modified electrodes with high electrocatalytic performance for methanol oxidation

Content Provider	Royal Society of Chemistry (RSC)
Author	Piraman, Shakkthivel Vilian, A. T. Ezhil Chen, Shen-Ming
Copyright Year	2015
Abstract	We report on a process for the electrochemical synthesis of Pt particles on a composite of zirconium oxide/electrochemically reduced graphene oxide (ERGO) sheets. Zirconium oxide produces bridging molecules which allow easy anchoring of Pt particles to form a functional ERGO multilayer film produced through a co-electrochemical deposition procedure. The catalytic performance improves as a consequence of the addition of ZrO2, which increases the number of active Pt sites. Scanning electron microscopy (SEM), Raman spectrometry, X-ray diffraction (XRD), and electrochemical impedance spectroscopy (EIS) are used to characterize the microstructure and morphology of the fabricated Pt/ZrO2–ERGO electrode. It is found that this approach allows for the development of new kinds of electrocatalysts for use in direct methanol fuel cells. The process of methanol oxidation is investigated through cyclic voltammetry and amperometry. The results indicate that the Pt/ZrO2–ERGO electrocatalyst exhibits much higher catalytic activity and better stability than either the Pt/ERGO or commercially available Pt/C electrocatalysts as well as have better tolerance to CO during the electrooxidation of methanol. The Pt catalysts on the ZrO2–ERGO composite facilitate the methanol oxidation reaction making it a promising material for application in the direct methanol fuel cells that are used in the fields of biotechnology and environmental chemistry.
Starting Page	953
Ending Page	961
Page Count	9
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	2
Journal	New Journal of Chemistry
DOI	10.1039/c4nj01470g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Spectroscopy Biotechnology Electrode Direct methanol fuel cell Environmental chemistry Scanning electron microscope X-ray crystallography Cyclic voltammetry ERGO Graphene Electrochemistry Amperometry Raman Zirconium dioxide Electrical impedance Methanol
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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