Effect of chemisorbed CO on MoOx–Pt/C electrode on the kinetics of hydrogen oxidation reaction

The sluggish kinetics of the hydrogen oxidation reaction (HOR) results in an ultra-high Pt loading on the anode of alkaline fuel cell (AFC) systems. The single-atom catalyst (SAC) can maximize...

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Mass transfer effects on kinetics of the hydrogen oxidation reaction at Nafion film covered Pt/C rotating disk electrodes

Catalysis Today ◽

10.1016/j.cattod.2011.04.037 ◽

2011 ◽

Vol 174 (1) ◽

pp. 2-9 ◽

Cited By ~ 3

Author(s):

Ren-Bin Lin ◽

Shin-Min Shih ◽

Jian-Lin Liu

Keyword(s):

Mass Transfer ◽

Oxidation Reaction ◽

Hydrogen Oxidation ◽

Rotating Disk ◽

Hydrogen Oxidation Reaction ◽

Transfer Effects ◽

Nafion Film ◽

Disk Electrodes ◽

Kinetics Of

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The Influence of the RuOx Island Size in PtRu Anode Catalysts on the Kinetics of the Hydrogen Oxidation Reaction in Reformate

ECS Meeting Abstracts ◽

10.1149/ma2009-02/10/1040 ◽

2009 ◽

Keyword(s):

Oxidation Reaction ◽

Hydrogen Oxidation ◽

Hydrogen Oxidation Reaction ◽

Island Size ◽

Anode Catalysts ◽

Kinetics Of

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A novel platinum-based nanocatalyst at a niobia-doped titania support for the hydrogen oxidation reaction

Journal of the Serbian Chemical Society ◽

10.2298/jsc100823100e ◽

2011 ◽

Vol 76 (8) ◽

pp. 1139-1152 ◽

Cited By ~ 2

Author(s):

Nevenka Elezovic ◽

Biljana Babic ◽

Velimir Radmilovic ◽

Ljiljana Gajic-Krstajic ◽

Nedeljko Krstajic ◽

...

Keyword(s):

Surface Area ◽

Oxidation Reaction ◽

Hydrogen Oxidation ◽

Pt Nanoparticles ◽

Active Surface Area ◽

Real Surface ◽

Hydrogen Oxidation Reaction ◽

Rotating Disc ◽

Doped Titania ◽

Kinetics Of

The kinetics of the hydrogen oxidation reaction (HOR) was studied at Pt nanoparticles supported on niobia-doped titania (Pt/N-T). The catalyst support, with the composition of 0.05NbO2.5-?-0.995TiO2 (0<?<1), was synthesized by a modified sol-gel procedure and characterized by the BET and X-ray diffraction (XRD) techniques. The specific surface area of the support was found to be 70 m2 g-1. The XRD analysis revealed the presence of the anatase TiO2 phase in the support powder. No peaks indicating the existence of Nb-compounds were detected. Pt/N-T nanocatalyst was synthesized by the borohydride reduction method. Transmission electron microscopy revealed a quite homogenous distribution of the Pt nanoparticles over the support, with a mean particle size of about 3 nm. The electrochemical active surface area of Pt of 42?4 m2 g-1 was determined by the cyclic voltammetry technique. The kinetics of the HOR was investigated by linear sweep voltammetry at a rotating disc electrode in 0.5 mol dm-3 HClO4 solution. The determined value of the Tafel slope of 35 mV dec-1 and an exchange current density of 0.45 mA cm-2 per real surface area of the Pt are in good accordance with those already reported in the literature for the HOR at polycrystalline Pt and Pt nanocatalysts in acid solutions. This new catalyst exhibited better activity for the HOR in comparison with Pt nanocatalyst supported on Vulcan? XC-72R high area carbon.

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