Sub-3 nm Pd-graphene Nanosheets with Outstanding Electrocatalytic Oxidation of Formic Acid

摘要

Pd-graphene nanosheets are synthesized by a mild condition. Structures and morphologies of samplesare characterized by transmission electron microscopy (TEM) images, and field-emission scanningelectron microscope (FE-SEM). The concentration of N2H4 affects the size of Pd nanocrystals. Moreimportantly, the size of nanocatalyst greatly affects its electrochemical activity towards electrocatalyticoxidation of formic acid. We find that the sub-3 nm Pd-graphene nanosheets exhibit much higherformic acid oxidation activity.