Synergistically Enhanced Electrocatalytic Performance of an N-Doped Graphene Quantum Dot-Decorated 3D MoS₂-Graphene Nanohybrid for Oxygen Reduction Reaction.

ABSTRACT: Nitrogen-doped graphene quantum dots (N-GQDs) were decorated on a three-dimensional (3D) MoS₂-reduced graphene oxide (rGO) framework via a facile hydrothermal method. The distribution of N-GQDs on the 3D MoS₂-rGO framework was confirmed using X-ray photoelectron spectroscopy, energy dispersive X-ray elemental mapping, and high-resolution transmission electron microscopy techniques. The resultant 3D nanohybrid was successfully demonstrated as an efficient electrocatalyst toward the oxygen reduction reaction (ORR) under alkaline conditions. The chemical interaction between the electroactive N-GQDs and MoS₂-rGO and the increased surface area and pore size of the N-GQDs/MoS₂-rGO nanohybrid synergistically improved the ORR onset potential to +0.81 V v

SUBMITTER: Vinoth R 

PROVIDER: S-EPMC6640782 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature