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Electro-oxidation of Formic Acid on Carbon Supported Edge-Truncated Cubic Platinum Nanoparticles Catalysts

Li She-Qiang, Fu Xing-Qiu, Hu Bing, Deng Jia-Jun and Chen Lei

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CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES

The oxidation of formic acid on edge-truncated cubic platinum nanoparticles/C catalysts is investigated. X-ray photoelectron spectroscopy analysis indicates that the surface of edge-truncated cubic platinum nanoparticles is composed of two types of coordination sites. The oxidation behavior of formic acid on edge-truncated cubic platinum nanoparticles/C is investigated using cyclic voltammetry. The apparent activation energies are found to be 54.2, 55.0, 61.8, 69.5, 71.9, 69.26, 65.28kJ/mol at 0.15, 0.3, 0.4, 0.5, 0.6, 0.65, 0.7V, respectively. A specific surface area activity of 1.76 mAcenterdotcm−2 at 0.4 V indicates that the edge-truncated cubic Platinum nanoparticles are a promising anode catalyst for direct formic acid fuel cells.


PACS

61.46.Df Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)

82.45.Rr Electroanalytical chemistry

82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces

82.47.Gh Proton exchange membrane (PEM) fuel cells

79.60.Jv Interfaces; heterostructures; nanostructures

81.16.Hc Catalytic methods

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Chemical physics and physical chemistry

Dates

Issue 11 (November 2009)

Received 6 July 2009



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