Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 10, Pages 3789-3793Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp077068m
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Small carbon-supported Pd nanoparticles with controllable size (2.7-9.0 nm) were prepared by a solution chemistry method, characterized by transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopies, and evaluated as anode catalysts for the electrooxidation of formic acid at room temperature. Measurements of catalytic activity by electrochemical methods (cyclic voltammetry and chronoamperometry) revealed a strong potential-dependent particle size effect. Classical volcano plots of catalytic activity vs particle size were obtained from which the optimal Pd particle size for the respective potential region was determined.
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