Hi, I am exfoliating graphite through high shear mixing in order to produce Graphene sheets. Is it possible for Graphene Sheets to have low surface area (around 78 m2/g)? Note that I measured the specific surface area of Graphene using Brunauer-Emmett-Teller (BET).
HI
When multi-layer graphene is obtained, the specific surface are will be lower.
Cheers,Reza
Reza Omrani Thank you! Because my colleagues were telling me that since the surface area is too low this means that my product is graphite and not graphene so I was confused
Hi Hassan,
The exfoliation of graphite may not occurred properly, and it is of multilayer in thickness so the observed surface area is low. Sometimes graphene oxide (oxidized product of graphite) is showing more surface area than what you got now. Try to produce good quality of graphene sheets, and analyze it by XRD you can see the quality of graphene sheet also find out the number of layers (less number of layers means high surface area). Also, while measuring the BET surface area the degassing time and temperature also plays a role. You can follow my paper for some of your query.
Eco-friendly synthesis of porous graphene and its utilization as high performance supercapacitor electrode material. 10.1016/j.jallcom.2019.05.302
All the best.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Carbon Materials
- Graphite