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Issue 4, 2013
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Mesoporous titanium nitride supported Pt nanoparticles as high performance catalysts for methanol electrooxidation

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Abstract

Mesoporous titanium nitride (TiN) with high surface area and good electrical conductivity was prepared by a novel solid–solid phase separation method from a Zn containing titanium oxide, Zn2TiO4. The PXRD shows single phase rocksalt structure of TiN with a domain size of 25 nm. The conductivity of mesoporous TiN at 35 bar is 395 S cm−1. The Pt/TiN catalyst exhibits more negative onset potential for methanol electrooxidation (0.15 V) than Pt/C (0.22 V), showing a higher intrinsic electrocatalytic activity, while its peak current density (228 mA mg−1 Pt) is ∼1.5 times higher than that of Pt/C (148 mA mg−1 Pt). The Pt/TiN catalyst also demonstrates excellent long-term stability. This work provides an efficient method to prepare mesoporous nitrides as a promising support towards oxidation of small organic molecules in fuel cells.

Graphical abstract: Mesoporous titanium nitride supported Pt nanoparticles as high performance catalysts for methanol electrooxidation

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Publication details

The article was received on 26 Nov 2012, accepted on 26 Nov 2012 and first published on 28 Nov 2012


Article type: Communication
DOI: 10.1039/C2CP44215A
Citation: Phys. Chem. Chem. Phys., 2013,15, 1088-1092
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    Mesoporous titanium nitride supported Pt nanoparticles as high performance catalysts for methanol electrooxidation

    M. Yang, Z. Cui and F. J. DiSalvo, Phys. Chem. Chem. Phys., 2013, 15, 1088
    DOI: 10.1039/C2CP44215A

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