Open AccessSynthesis of graphene aerogel materials by hydrothermal method without the use of reducing agents
Author(s) -
Chuyen Phan Thi,
Ha Vu Thi Thu
Publication year - 2020
Publication title -
xúc tác và hấp phụ
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2020.017
Subject(s) - aerogel , graphene , hydrothermal circulation , materials science , raman spectroscopy , adsorption , specific surface area , environmentally friendly , scanning electron microscope , chemical engineering , supercritical fluid , nanotechnology , catalysis , composite material , chemistry , organic chemistry , optics , engineering , biology , ecology , physics
Graphene Aerogel (GA) is the lightest material in over the world. This material has high surface area with many layers of single graphene and has potential applications for adsorption, catalysis and storage. In this study, graphene aerogel materials were successfully synthesized by environmentally friendly hydrothermal methods without the use of reducing agents and were dryed by supercritical CO2 to avoid secondary environmental pollution. The obtained GA materials were characterized by Brunauer- Emmett- Teller (BET) surface area measurements, scanning electron microscopy (SEM), Raman spectroscopy. Results showed that with hydrothermal time of 5 hours and GO concentration of 2,5 mg/mL, GA material has highest surface area of 941 m2/g and lowest density of 0,0226 g/cm3.