A detailed experimental comparison on the hydrogen storage ability of different forms of graphitic carbon nitride (bulk, nanotubes and sheets) with multiwalled carbon nanotubes

R. Guo, Y. S. Tseng, I. Retita, G. Bahmanrokh, B. Arkhurst, S. L.I. Chan

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The reversible hydrogen storage of graphitic carbon nitride (g-C3N4) nanotubes at room temperature was first studied through experimental methods in this work and was compared to multiwalled carbon nanotubes (MWCNT), bulk g-C3N4, and g-C3N4 nanosheets. Compared with MWCNT which had a similar specific surface area around 60 m2/g, g-C3N4 nanotubes had a higher room temperature hydrogen storage capacity up from 0.46 wt% for MWCNT to 0.78 wt%. This value for the g-C3N4 nanotubes was also higher than the hydrogen storage capacity of bulk g-C3N4 (0.51 wt%) and g-C3N4 nanosheets (0.73 wt%), even though g-C3N4 nanosheets had the highest specific surface area of 161 m2/g. Temperature programming desorption (TPD) was applied to study the desorption behaviours and it was found that chemisorption contributed to the relative high storage capacity of g-C3N4 nanotubes.

Original languageEnglish
Article number101508
JournalMaterials Today Chemistry
Volume30
DOIs
StatePublished - Jun 2023

Keywords

  • Energy storage
  • Graphitic carbon nitride (g-CN) nanotubes
  • Hydrogen adsorption/desorption
  • Isosteric heat of adsorption

Fingerprint

Dive into the research topics of 'A detailed experimental comparison on the hydrogen storage ability of different forms of graphitic carbon nitride (bulk, nanotubes and sheets) with multiwalled carbon nanotubes'. Together they form a unique fingerprint.

Cite this