Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 46, Pages 31849-31855Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b10199
Keywords
sulfur-doped graphene; microwave exfoliation; oxygen reduction reaction; electrochemistry
Funding
- Ministry of Education, Singapore [MOE2013-T2-1-056, ARC 35/13]
- Czech Science Foundation (GACR) [15-09001S, 16-05167S]
- MSMT [20-SVV/2016]
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Tuning the electronic and chemical properties of graphene can be carried out through heteroatomic doping, enabling its use as an electrocatalyst. Sulfur-doped graphene has been suggested to be a viable alternative to traditional Pt-based catalysts for oxygen reduction under alkaline conditions. Herein we present a fast and efficient route to synthesize S-doped graphenes through the microwave-assisted exfoliation and reduction of three different graphite oxides in the presence of hydrogen sulfide. The materials obtained were characterized using scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, combustion elemental analysis, and voltammetry. These S-doped graphenes were found to have good electrochemical performance and were active in the catalysis of the oxygen reduction reaction.
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