Structural characterization and effect of dehydration on the Ni-doped titanate nanotubes
- Title
- Structural characterization and effect of dehydration on the Ni-doped titanate nanotubes
- Authors
- Kim, DH; Jang, JS; Goo, NH; Kwon, MS; Lee, JW; Choi, SH; Shin, DW; Kim, SJ; Lee, KS; null
- Date Issued
- 2009-08
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Titanate nanotubes and Ni-doped titanate nanotubes were synthesized by hydrothermal method and simple firing using rutile powders as starting materials. The hydrogen absorption of the nanotubes was investigated by the conventional volumetric pressure-composition (P-C) isothermal method using an automated Sivert's type apparatus. The microstructure and morphology of the synthesized nanotubes were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HR-TEM). Titanate nanotubes compose of H2Ti2O5 center dot H2O in accordance with DFT (Density Functional Theory) calculation and has outer and inner diameter of similar to 10 and 6 nm, and the interlayer spacing about 0.65-0.74 nm. The storage capacity of hydrogen in the Ni-doped nanotubes increased linearly with pressure and revealed reliable evidence of hydrogen sorption at room temperatures. (C) 2009 Elsevier B.V. All rights reserved.
- Keywords
- Titanate nanotubes; Hydrothermal method; Hydrogen storage; XFAS; Ni dopant; LITHIUM INTERCALATION; ANNEALING TEMPERATURE; TIO2 NANOTUBES; HYDROGEN; STORAGE; NANOWIRES; CAPACITY; NANORODS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27863
- DOI
- 10.1016/J.CATTOD.200
- ISSN
- 0920-5861
- Article Type
- Conference
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- There are no files associated with this item.
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