Premium
Orange Peel Derived‐Nitrogen and Sulfur Co‐doped Carbon Dots: a Nano‐booster for Enhancing ORR Electrocatalytic Performance of 3D Graphene Networks
Author(s) -
Karaman Ceren
Publication year - 2021
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202100018
Subject(s) - graphene , heteroatom , sulfur , materials science , electron transfer , chemical engineering , carbon fibers , methanol , nanotechnology , chemistry , photochemistry , organic chemistry , composite number , composite material , ring (chemistry) , engineering , metallurgy
Herein, nitrogen, sulfur co‐doped carbon dots (N,S−CDs) have been synthesized by a cost‐natural fabrication method using waste orange‐peel as a natural‐carbon‐precursor. N,S−CDs have been hydrothermally anchored to the three‐dimensional‐graphene‐networks (3D−GNs) to boost the electrocatalytic activity by a defective surface effect. Due to the synergistic utilization of heteroatoms, and effective mass‐transfer and improved transport kinetics resulting from interconnected 3D‐architecture, N,S−CDs anchored 3D−GNs (N,S−CDs@3D−GNs) grant superior oxygen‐reduction‐reaction (ORR) activity. N,S−CDs@3D−GNs exhibit a dominant four‐electron pathway ( n=3.89 ) for ORR in alkaline media besides superior methanol tolerance and robust stability. This work opens a door for converting low‐value agricultural wastes into value‐added materials for utilizing in energy application.