Investigating Hydrogen Separation in a Novel Rotating Carbon Nanotube-Carbon Nanocone Setup Using Molecular Dynamics Simulations
COATINGS(2020)
Abstract
Hydrogen fuel cells rely on the purity of the hydrogen gas for maintaining a high performance. This study investigates a novel nanostructure design for its effectiveness in separating H-2 molecules from a mixture of gases containing H-2, CH4, CO2, N-2, CO and H2O molecules using Molecular Dynamics simulations. Based on an open-ended (28, 0) rotating carbon nanotube with one carbon nanocone at each of its two extremes, this device is predicted through Molecular Dynamics simulations to be able to separate hydrogen from a gas mixture contained within. The nanocones were placed with their tips inside the nanotube and the size of the open channel created between the two was controlled to find a configuration that allows hydrogen to pass while restricting the other gases. Although in need of optimization, we find it capable of high selectivity and highlight captivating gas behavior insights to help advance rational gas separation device development.
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Key words
hydrogen separation,Molecular Dynamics,carbon nanotube,carbon nanocone
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