Abstract
Pd-Fe/C catalysts were prepared by the impregnation-reduction method.The ratios of Pd to Fe were 1:1,2:1,1:2,respectively.The catalysts were characterized by transmission electron microscope (TEM) and powder X-ray diffraction (XRD).The results indicate that the catalyst particles are homogeneously distributed in the carrier.The average particle sizes are less than 5nm.The influence of adding Fe on Pd/C catalyst crystal structure was also studied.Finally,the activation of Pd-Fe/C catalysts with different Pd/C ratios to the electrocatalytic oxidation of formic acid was investigated. The results show that the catalytic performances of Pd/C catalyst are improved by adding suitable Fe; the catalytic performance of the Pd-Fe/C catalysts reaches the best when the atom ration of Pd:Fe equal to 1:1.
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