Hydrogen evolution reaction efficiency by low loading of platinum nanoparticles protected by dendrimers on carbon materials

Efficiency of hydrogen evolution reaction (HER) was evaluated with a small amount of platinum nanoparticles (PtNPs) immobilized on graphene oxides, carbon nanohorns (CNHs) and carbon nanotubes (CNTs) through dendrimer (Den)-mediated chemical reaction. The excellent HER, durability and stability of composite electrodes are due to chemical bonding immobilization of PtNPs on carbon materials and its substantial graphitized structure. Thus, CNH/DenPtNPs and CNT/DenPtNPs are the promising nano-electrocatalysts with low onset potential and high cathodic current density for HER and their high activities are achieved at only similar to 1 we,6 of PtNPs. (C) 2016 Elsevier B.V. All rights reserved.