Abstract
The objective of the present work was to investigate the possibility of improving the hydrogen-storage capacity of mesoporous MCM-41 containing nickel (Ni) oxides (Ni/MCM-41). The MCM-41 and Ni/MCM-41 were prepared using a hydrothermal process as a function of Ni content (2, 5, and 10wt.% in the MCM-41). The surface functional groups of the Ni/MCM-41 were identified by Fourier transform infrared spectroscopy (FTIR). The structure and morphology of the Ni/MCM-41 were characterized by X-ray diffraction (XRD) and field emission transmission electron microscopy (FE-TEM). XRD results showed a well-ordered hexagonal pore structure; FE-TEM also revealed, as a complementary technique, the structure and pore size. The textural properties of the Ni/MCM-41 were analyzed using N 2 adsorption isotherms at 77K. The hydrogen-storage capacity of the Ni/MCM-41 was evaluated at 298K/100bar. It was found that the presence of Ni on mesoporous MCM-41 created hydrogen-favorable sites that enhanced the hydrogen-storage capacity by a spillover effect. Furthermore, it was concluded that the hydrogen-storage capacity was greatly influenced by the amount of nickel oxide, resulting in a chemical reaction between Ni/MCM-41 and hydrogen molecules.
| Original language | English |
|---|---|
| Pages (from-to) | 194-198 |
| Number of pages | 5 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 346 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jun 2010 |
Bibliographical note
Funding Information:This paper was performed for the Hydrogen Energy R&D Center, a 21st Century Frontier R&D Program, funded by the Ministry of Education, Science, and Technology of Korea.
Keywords
- Hydrogen storage
- MCM-41
- Nickel
- Spillover effect