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Effect of Single‐ and Multiwall Carbon Nanotubes with Activated Carbon on Hydrogen Storage
Author(s) -
Jokar Faezeh,
Nguyen Dinh Duc,
Pourkhalil Mahnaz,
Pirouzfar Vahid
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000519
Subject(s) - carbon nanotube , adsorption , nitric acid , activated carbon , hydrogen storage , nanoporous , scanning electron microscope , fourier transform infrared spectroscopy , chemical vapor deposition , materials science , hydrogen , chemical engineering , catalysis , carbon fibers , carbon nanotube supported catalyst , inorganic chemistry , chemistry , nanotechnology , carbon nanofiber , organic chemistry , composite material , composite number , engineering
Carbon nanotubes and nanoporous activated carbons served as adsorbents for hydrogen storage. Carbon nanotubes were prepared by a special chemical vapor deposition method over a Co‐Mo/MgO catalyst, and nanoporous activated carbons were obtained from walnut shells. According to the Fourier transform infrared analysis, oxygenated functional groups were formed on the structures. The X‐ray diffraction and scanning electron microscopy results let conclude that the structures were not damaged by the acidic vapor method. The maximum experimental value for adsorption capacity was achieved under elevated pressure. The highest capacity of H 2 adsorption was detected for nitric acid‐modified carbon.