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Catalysts 2015, 5(3), 1399-1416; doi:10.3390/catal5031399

The Use of C-MnO2 as Hybrid Precursor Support for a Pt/C-MnxO1+x Catalyst with Enhanced Activity for the Methanol Oxidation Reaction (MOR)

Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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Author to whom correspondence should be addressed.
Academic Editor: Minhua Shao
Received: 23 May 2015 / Revised: 17 July 2015 / Accepted: 22 July 2015 / Published: 30 July 2015
(This article belongs to the Special Issue Electrocatalysis in Fuel Cells)
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Abstract

Platinum (Pt) nanoparticles are deposited on a hybrid support (C-MnO2) according to a polyol method. The home-made catalyst, resulted as Pt/C-MnxO1+x, is compared with two different commercial platinum based materials (Pt/C and PtRu/C). The synthesized catalyst is characterized by means of FESEM, XRD, ICP-MS, XPS and μRS analyses. MnO2 is synthesized and deposited over a commercial grade of carbon (Vulcan XC72) by facile reduction of potassium permanganate in acidic solution. Pt nanoparticles are synthesized on the hybrid support by a polyol thermal assisted method (microwave irradiation), followed by an annealing at 600 °C. The obtained catalyst displays a support constituted by a mixture of manganese oxides (Mn2O3 and Mn3O4) with a Pt loading of 19 wt. %. The electro-catalytic activity towards MOR is assessed by RDE in acid conditions (0.5 M H2SO4), evaluating the ability to oxidize methanol in 1 M concentration. The synthesized Pt/C-MnxO1+x catalyst shows good activity as well as good stability compared to the commercial Pt/C based catalyst. View Full-Text
Keywords: rotating disk electrode; platinum nanoparticles; hybrid support; manganese oxides; methanol oxidation reaction (MOR); CO stripping rotating disk electrode; platinum nanoparticles; hybrid support; manganese oxides; methanol oxidation reaction (MOR); CO stripping
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Videla, A.H.M.; Osmieri, L.; Esfahani, R.A.M.; Zeng, J.; Francia, C.; Specchia, S. The Use of C-MnO2 as Hybrid Precursor Support for a Pt/C-MnxO1+x Catalyst with Enhanced Activity for the Methanol Oxidation Reaction (MOR). Catalysts 2015, 5, 1399-1416.

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