NDLI: Carbon Modified with Vanadium Nanoparticles for Hydrogen Peroxide Electrogeneration

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Carbon Modified with Vanadium Nanoparticles for Hydrogen Peroxide Electrogeneration

Content Provider	Springer Nature Link
Author	Simas, P. S. Antonin, V. S. Parreira, L. S. Hammer, P. Silva, F. L. Kronka, M. S. Valim, R. B. Lanza, M. R. V. Santos, M. C.
Copyright Year	2017
Abstract	This paper compares the results of two preparation routes for the production of carbon (Vulcan XC 72R) modified with vanadium nanostructured electrocatalysts for hydrogen peroxide (H$_{2}$O$_{2}$) electrogeneration using the following mass proportions of vanadium on carbon (V/C): 1, 3, 5, 7, 10, and 13%. Best results for H$_{2}$O$_{2}$ electrogeneration were obtained using a V/C sol-gel method (SGM) with 3%, highest ring currents. For oxygen reduction reaction (ORR), using the V/C SGM with 3% and V/C polymeric precursor method (PPM) with 7%, the results of ring currents measured are very high when compared to Vulcan XC 72R. X-ray diffraction (XRD) analysis mainly showed the V$_{2}$O$_{5}$ phase. X-ray photoelectron spectroscopy (XPS) results of the V/C PPM 7% and V/C SGM 3% samples highlight the predominance of the V$_{2}$O$_{5}$ phase and, for the latter catalyst, a more oxidized carbon surface. For the most promising electrocatalysts, the contact angle was evaluated, showing that the anchoring of the metal in the carbon surface increases the hydrophilicity of the materials. The prepared materials are promising for peroxide electrogeneration mainly due to the synergetic effect of vanadium oxide nanoparticles and acid oxygen species of the carbon, contributing to enhancing catalyst hydrophilicity. Graphical Abstract Electrocatalytic activity toward peroxide electrogeneration using V/C electrodes
Starting Page	311
Ending Page	320
Page Count	10
File Format	PDF
ISSN	18682529
Journal	Electrocatalysis
Volume Number	8
Issue Number	4
e-ISSN	18685994
Language	English
Publisher	Springer US
Publisher Date	2017-04-11
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon XC 72R Vanadium nanostructured materials Hydrogen peroxide Advanced oxidative processes Oxygen reduction reaction Electrochemistry Physical Chemistry Catalysis Energy Technology
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

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Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration

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