Related Experiment Video
Updated: Jun 25, 2026
08:40
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Potential of AlN nanostructures as hydrogen storage materials
Qian Wang1, Qiang Sun, Puru Jena
1Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, USA.
ACS Nano
|March 5, 2009
Summary
Aluminum nitride (AlN) nanostructures can store significant amounts of hydrogen (4.7 wt %). These materials offer an ideal solution for hydrogen storage applications without the clustering issues seen in other nanostructures.
Area of Science:
- Materials Science
- Nanotechnology
- Computational Chemistry
Background:
- Bulk aluminum nitride (AlN) possesses a wurtzite structure with four-fold coordination.
- AlN nanostructures exhibit unique surface properties with unsaturated Al sites.
- Hydrogen storage is a critical challenge for clean energy technologies.
Purpose of the Study:
- To investigate the hydrogen storage capacity of various AlN nanostructures.
- To understand the binding mechanisms of hydrogen molecules on AlN nanostructures.
- To evaluate the suitability of AlN nanostructures for practical hydrogen storage.
Main Methods:
- Gradient-corrected density functional theory (DFT) calculations were employed.
- The study analyzed AlN nanocages, nanocones, nanotubes, and nanowires.
- Hydrogen molecule adsorption and binding energies were computed.
Main Results:
- AlN nanostructures can store 4.7 wt % hydrogen, binding one H(2) molecule per unsaturated Al site.
- Binding energies (0.1-0.2 eV/H(2)) are suitable for ambient conditions.
- Unlike metal-coated nanostructures, AlN materials avoid hydrogen clustering.
Conclusions:
- AlN nanostructures are promising materials for efficient and stable hydrogen storage.
- The topology of the nanostructure does not significantly affect the storage capacity.
- These findings suggest a viable alternative for hydrogen storage solutions.
Related Concept Videos
02:13Reduction of Alkenes: Catalytic Hydrogenation
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...