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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
Carbon nanoscrolls: a promising material for hydrogen storage.
Giannis Mpourmpakis1, Emmanuel Tylianakis, George E Froudakis
1Department of Chemistry, University of Crete, Heraklion, Crete, Greece.
Nano Letters
|June 22, 2007
Summary
Carbon nanoscrolls show potential for hydrogen storage after structural modification and alkali doping. Optimized nanoscrolls can store up to 3 wt % hydrogen at ambient conditions.
Area of Science:
- Materials Science
- Computational Chemistry
- Nanotechnology
Background:
- Hydrogen storage is crucial for clean energy technologies.
- Carbon nanoscrolls are novel nanostructures with potential applications.
- Efficient hydrogen storage materials are actively sought.
Purpose of the Study:
- To investigate the hydrogen storage capacity of carbon nanoscrolls using a multiscale theoretical approach.
- To determine the feasibility of carbon nanoscrolls as hydrogen storage materials.
- To identify structural and chemical modifications for enhanced hydrogen uptake.
Main Methods:
- Ab initio calculations at the density functional theory (DFT) level to determine H2 binding energies and interatomic potentials.
- Classical Monte Carlo simulations to estimate hydrogen storage capacity in large-scale nanoscrolls.
- Theoretical modeling of modified carbon nanoscroll structures.
Main Results:
- Pure carbon nanoscrolls exhibit insufficient interlayer spacing for significant hydrogen accumulation.
- Opening the nanoscroll structure to approximately 7 Å is necessary for hydrogen storage.
- Alkali doping significantly enhances hydrogen storage capacity in modified nanoscrolls.
- Achieved a storage capacity of 3 wt % at ambient temperature and pressure.
Conclusions:
- Carbon nanoscrolls require structural optimization and alkali doping to become effective hydrogen storage materials.
- The modified nanoscroll system shows promise for practical hydrogen storage applications.
- Theoretical predictions provide a pathway for designing advanced hydrogen storage solutions.
