Abstract
To improve the electrochemical performance of Pd-based catalysts for ethylene glycol oxidation (EGOR), a series of dealloyed Pdx(FeCo)10–x/C (Pd:FeCo = 3:7–9:1) catalysts have been synthesized by dealloying process in acid solution. The electrocatalytic results show that the electrocatalytic performances of D-Pdx(FeCo)10–x/C catalysts are increased as FeCo compositions increasing. And the further increased FeCo compositions would decrease the performances. That is, the Pd:FeCo = 6:4 is the optimal composition among the various precursor atomic ratios. For the interaction between surface Pd atoms and sub-layer alloyed Fe and Co atoms, the dealloyed Pd6(FeCo)4/C (D-Pd6(FeCo)4/C) catalyst has enhanced electrocatalytic performance. The peak current of D-Pd6(FeCo)4/C is 1.20 times than that of Pd/C in EGOR. And in the chronoamperometric tests, the current decreased rate of D-Pd6(FeCo)4/C is lower than that of Pd/C catalyst.
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