Orange Peel Derived‐Nitrogen and Sulfur Co‐doped Carbon Dots: a Nano‐booster for Enhancing ORR Electrocatalytic Performance of 3D Graphene Networks

• DOI: 10.1002/elan.202100018
• Publication Date: 2021-02-20T13:03:28Z
• Authors: Ceren Karaman
• Keywords: Heteroatom; Carbon fibers

Abstract Herein, nitrogen, sulfur co‐doped carbon dots (N,S−CDs) have been synthesized by a cost‐natural fabrication method using waste orange‐peel as natural‐carbon‐precursor. N,S−CDs hydrothermally anchored to the three‐dimensional‐graphene‐networks (3D−GNs) boost electrocatalytic activity defective surface effect. Due synergistic utilization of heteroatoms, and effective mass‐transfer improved transport kinetics resulting from interconnected 3D‐architecture, 3D−GNs (N,S−CDs@3D−GNs) grant superior oxygen‐reduction‐reaction (ORR) activity. N,S−CDs@3D−GNs exhibit dominant four‐electron pathway ( n=3.89 ) for ORR in alkaline media besides methanol tolerance robust stability. This work opens door converting low‐value agricultural wastes into value‐added materials utilizing energy application.