Abstract
Hydrogen isotherms on a variety of single-walled carbon nanotube (SWNT) samples were measured using a differential pressure adsorption apparatus, which provides highly accurate data. A number of these SWNT samples were modified by a non-destructive cutting process, which reduced the aspect ratio of the nanotube bundles by two orders of magnitude. There were no apparent differences in the microporosity of SWNT as a function of aspect ratio. The adsorption of helium on SWNT is shown to be non-negligible and results in artificially low hydrogen capacities using conventional adsorption methodology. With no accounting for helium adsorption, the hydrogen adsorption results show that cut and uncut SWNT have similar hydrogen capacities of <1 wt% at 25 °C and pressures up to 110 bar. However, an analysis of hydrogen capacity versus N2Brunauer–Emmett–Teller surface area suggests that there is an enhanced heat of adsorption of hydrogen for SWNT versus activated carbon.
References
51
Referenced
29
10.1063/1.1466517
10.1002/aic.690470522
10.1016/S0009-2614(01)01181-2
10.1021/la950969e
10.1016/j.mseb.2003.10.095
10.1557/JMR.2002.0326
10.1126/science.275.5297.187
10.1143/JJAP.41.4878
10.1515/zpch-1907-6009
/ Z. Phys. Chem. / Towards the knowledge of occlusions and diffusion of gases through metals by Sieverts (1907)10.1021/ja015766t
10.1039/a707632k
{'key': 'S0884291400085502_ref027', 'first-page': '119', 'volume-title': 'Amorphous and Nanostructured Carbon', 'volume': '593', 'author': 'Stepanek', 'year': '2000'}
/ Amorphous and Nanostructured Carbon by Stepanek (2000)10.1016/S0009-2614(01)00004-5
10.1021/nl034181p
- 22. Smalley R.E. , Colbert D.T. , Dai H. , Liu J. , Rinzler A.G. , Hafner J.H. , Smith K. , Guo T. , Nikolaev P. , and Thess A. : Method for Cutting Nanotubes. U.S. Patent No. 0 094 311 (2002).
- 19. Margrave J.L. , Gu Z. , Hauge R.H. and Smalley R.E. : Method for cutting single-walled carbon nanotubes through fluorination. U.S. Patent No. 0 009 114, A1 (2004).
10.1126/science.280.5367.1253
- 15. Smalley R.E. , Colbert D. and Dai H. : Carbon nanotubes purified under oxidizing conditions after being made by using high mass energy beam of high mass atoms, ultrasound, or reflux. European Patent No. EP 1 375 460 A2 (2004).
{'key': 'S0884291400085502_ref014', 'first-page': '26', 'article-title': 'Band gap fluorescence from individual single-walled carbon nanotubes', 'volume': '297', 'author': 'O’Connell', 'year': '2002', 'journal-title': 'Science'}
/ Science / Band gap fluorescence from individual single-walled carbon nanotubes by O’Connell (2002)10.1063/1.1426941
{'key': 'S0884291400085502_ref012', 'volume-title': 'Nanotubes and Related Materials', 'volume': '633', 'author': 'Heben', 'year': '2001'}
/ Nanotubes and Related Materials by Heben (2001)10.1103/PhysRevLett.85.138
10.1016/S0008-6223(01)00051-3
10.1007/s003390100788
10.1103/PhysRevLett.89.146105
10.1166/jnn.2004.116
10.1016/S0360-3199(96)00185-1
10.1021/ie9900871
- 39. Dreisbach F. : Measurement of H2 adsorption on activated carbon, rubotherm Präzisionsmeßtechnik GmbH, Bochum, Germany (2004, private communication).
10.1021/jp045358m
10.1016/j.jcis.2004.05.024
10.1016/S0008-6223(00)00250-5
10.1021/j150579a014
10.1021/jp047253p
10.1021/nl025675+
10.1021/jp0114891
10.1063/1.481575
10.1016/S0360-3199(01)00014-3
10.1016/S0008-6223(03)00014-9
10.1021/ja0155231
10.1038/372159a0
10.1016/j.carbon.2004.02.025
10.1021/cm011620h
10.1007/s003390100983
10.1016/S0920-5861(02)00205-5
- 20. Green M. and Hodder L. : Opening and Filling Carbon Nanotubes: WO 96/09246 (1996).
- 38. Zielinski J. M. , Coe C. G. , Nickel R. J. , Romeo A. M. , Cooper A. C. , and Pez G. P. : High pressure sorption isotherms via differential pressure measurements. Langmuir (submitted 2005).
10.1038/35104634
10.1051/jp4:20020084
10.1038/386377a0
10.1016/j.cplett.2004.11.104
Dates
Type | When |
---|---|
Created | 19 years, 8 months ago (Dec. 14, 2005, 5:47 a.m.) |
Deposited | 4 years, 1 month ago (July 21, 2021, 9:04 a.m.) |
Indexed | 10 months, 2 weeks ago (Oct. 5, 2024, 8:33 p.m.) |
Issued | 19 years, 8 months ago (Dec. 1, 2005) |
Published | 19 years, 8 months ago (Dec. 1, 2005) |
Published Online | 19 years, 8 months ago (Dec. 1, 2005) |
@article{Haas_2005, title={Tailoring singlewalled carbon nanotubes for hydrogen storage}, volume={20}, ISSN={2044-5326}, url={http://dx.doi.org/10.1557/jmr.2005.0398}, DOI={10.1557/jmr.2005.0398}, number={12}, journal={Journal of Materials Research}, publisher={Springer Science and Business Media LLC}, author={Haas, M.K. and Zielinski, J.M. and Dantsin, G. and Coe, C.G. and Pez, G.P. and Cooper, A.C.}, year={2005}, month=dec, pages={3214–3223} }