Open AccessStorage of Hydrogen in Activated Carbons and Carbon Nanotubes
Author(s) -
E. E. Doğan,
P. Tokcan,
Berna Koçer Kızılduman
Publication year - 2018
Publication title -
advances in materials science/advances in materials sciences
Language(s) - English
Resource type - Journals
eISSN - 2083-4799
pISSN - 1730-2439
DOI - 10.1515/adms-2017-0045
Subject(s) - hydrogen storage , carbon nanotube , materials science , activated carbon , adsorption , chemical engineering , hydrogen , cryo adsorption , scanning electron microscope , nanotechnology , composite material , organic chemistry , chemistry , alloy , engineering
Activated carbons and carbon nanotube were synthesized with chemical and microwave processes of olive leaf in media with and without ultrasonic waves, and chemical vapor deposition method, respectively. The samples were characterized by x-ray diffraction, calorimetry, Brunauer, Emmett and Teller method, scanning electron microscopy/energy-dispersive X-ray, and zetasizer nano S90 instruments. The activated carbon synthesized in the ultrasonic bath had a higher surface area. The hydrogen adsorption capacity of carbon structures including activated carbons and carbon nanotube was measured as a function of pressure at 77 K. The hydrogen storage capacity of the carbon nanotube is 300% and 265% higher than the hydrogen storage capacity of activated carbons synthesized in medium without and with ultrasonic waves, respectively. Results showed the correlation between hydrogen storage capacity and specific surface area. The highest H 2 storage value was obtained with carbon nanotube at 77 K. As a result, activated carbon and carbon nanotube can be used in hydrogen storage and therefore, the olive leaf can be converted into a high added value product in the energy field.