Abstract
This work aims to investigate the preparation of palladium (Pd) particles on graphene oxide (GO) support via gamma radiolysis and to study their electrochemical activity towards the oxygen reduction reaction (ORR). The results show that the Pd precursor concentration used in the preparation process influences the loading, size, and distribution of the Pd particles. The electrochemical analysis shows that the Pd/GO samples synthesized through gamma radiolysis exhibit excellent activity toward ORR. Additionally, the gamma irradiation used in the synthesis process shows beneficial effects on the Pd/GO. High gamma irradiation doses increase the electron transfer number and reduce the peroxide yield of the Pd/GO.
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