Novel Pd based coral-like nanochain networks decorated with ultralow loading (0.66 at%) Pt (Pt-on-PdCNNs) were successfully synthesized through a facile wet chemical method. The Pt-on-PdCNNs exhibited significantly enhanced activity and stability towards formic acid electrooxidation, which was ascribed to their unique properties such as the highly interconnected networks, the more exposed Pd(111) planes and the reduced CO formation and adsorption on the Pt-Pd surface.

THF was investigated as a suitable solvent to disperse pristine graphene due to the van der Waals interaction. THF was therefore chosen as the solvent to successfully synthesize Pd particles with a diameter of 1.8 nm on graphene which exhibited improved electrocatalytic activities and stabilities for formic acid electro-oxidation.

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