Promotion of hydrogen peroxide production on graphene-supported atomically dispersed platinum: Effects of size on oxygen reduction reaction pathway

Reducing the Pt utilization has become a desirable task in the electrocatalytic oxygen reduction reaction process. Here, we report that Pt single-atoms are successfully anchored on reduced graphene oxide sheets via facile chemical reduction. The resulting catalysts exhibit enhanced mass activity by loading tiny amounts of Pt atoms (0.48 wt%) and maximizing their atom-utilization efficiency. It is noticeable that Pt single-atom catalysts show a...