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Title: A DFT study of planar vs. corrugated graphene-like carbon nitride (g-C3N4) and its role in the catalytic performance of CO2 conversion
Authors: Azofra Mesa, Luis Miguel 
MacFarlane, Douglas R.
Sun, Chenghua
UNESCO Clasification: 221001 Catálisis
Issue Date: 2016
Journal: Physical Chemistry Chemical Physics 
Abstract: Graphene-like carbon nitride (g-C3N4), a metal-free 2D material that is of interest as a CO2 reduction catalyst, is stabilised by corrugation in order to minimise the electronic repulsions experienced by the N lone pairs located in their structural holes. This conformational change not only stabilises the Fermi level in comparison with the totally planar structure, but also increases the potential depth of the π-holes, representing the active sites where the catalytic CO2 conversion takes place. Finally, as a result of corrugation, our DFT-D3 calculations indicate that the reaction Gibbs free energy for the first H+/e− addition decreases by 0.49 eV with respect to the totally planar case, suggesting that corrugation not only involves the material's stabilisation but also enhances the catalytic performance for the selective production of CO/CH3OH.
ISSN: 1463-9076
DOI: 10.1039/C6CP02453J
Source: Physical Chemistry Chemical Physics [ISSN 1463-9076], v. 18 (27), p. 18507-18514
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