Room-Temperature Hydrogen Uptake by TiO2 Nanotubes
- 14 May 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 44 (12), 4124-4126
- https://doi.org/10.1021/ic0501723
Abstract
TiO(2) nanotubes can reproducibly store up to approximately 2 wt % H(2) at room temperature and 6 MPa. However, only about 75% of this stored hydrogen can be released when the hydrogen pressure is lowered to ambient conditions, suggesting that both physisorption and chemisorption are responsible for the hydrogen uptake. FTIR spectroscopy, temperature-programmed desorption (TPD), and pressure-composition (P-C) isotherms suggest that 75% of the H(2) is physisorbed and can be reversibly released upon pressure reduction. Approximately 13% is weakly chemisorbed and can be released at 70 degrees C as H(2), and approximately 12% is bonded to oxide ions and released only at temperatures above 120 degrees C as H(2)O.Keywords
This publication has 16 references indexed in Scilit:
- Formation of nanotubes TiO2 from layered titanate particles by a soft chemical processSolid State Communications, 2005
- Recent Advances in Hydrogen Storage in Metal‐Containing Inorganic Nanostructures and Related MaterialsAdvanced Materials, 2004
- A study on the growth and structure of titania nanotubesJournal of Materials Research, 2004
- Nanotubes of lepidocrocite titanatesChemical Physics Letters, 2003
- Synthesis and Characterization of Ion‐Exchangeable Titanate NanotubesChemistry – A European Journal, 2003
- Titanium Disulfide Nanotubes as Hydrogen-Storage MaterialsJournal of the American Chemical Society, 2003
- Interaction of hydrogen with metal nitrides and imidesNature, 2002
- Metal oxides as catalysts for improved hydrogen sorption in nanocrystalline Mg-based materialsJournal of Alloys and Compounds, 2001
- Hydrogen Storage in Single-Walled Carbon Nanotubes at Room TemperatureScience, 1999
- Storage of hydrogen in single-walled carbon nanotubesNature, 1997