Abstract
Density functional calculations have been performed on the structural and electronic properties of the pristine and Stone–Wales-defected (SW) carbon nanotubes (CNT) with and without the adsorption of a H2O2 molecule. H2O2 interacts with the pristine CNT weakly, releasing energy of about 2.9 kcal/mol, but it presents a bit higher reactivity toward the SW-defected CNT. However, the adsorption of the H2O2 molecule on the SW-CNT is still very weak because of its small adsorption energy, large binding distance, and small charge transfer. To enhance the reactivity, a Si–Si pair is doped at the center of a SW defect, forming a Si2-SW-CNT. In this case, a strong adsorption is found with a large E ad of 155.6 kcal/mol, and a short bond length in comparison with the SW-CNT. It also was shown that the H2O2 molecule could be reduced into the OH on the Si2-SW-CNT without significant change in the electronic properties of the tube.
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Omidi, M.H., Soleymanabadi, H. & Bagheri, Z. Adsorption and dissociation of hydrogen peroxide on the defected carbon nanotubes. Struct Chem 26, 485–490 (2015). https://doi.org/10.1007/s11224-014-0513-4
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DOI: https://doi.org/10.1007/s11224-014-0513-4