CO2 adsorption in nitrogen-doped single-layered graphene quantum dots: a spectroscopic investigation.
Pedro H de Oliveira NetoJoão P C C RodriguesLeonardo E de SousaRicardo GarganoWiliam Ferreira da CunhaPublished in: Journal of molecular modeling (2019)
In this work, we investigate the adsorption process of CO2 in graphene quantum dots from the electronic structure and spectroscopic properties point of view. We discuss how a specific doping scheme could be employed to further enhance the adsorbing properties of the quantum dots. This is evaluated by considering the depth of the potential well, the spectroscopic constants, and the lifetime of the compound. Electronic structure calculations are carried out in the scope of the density functional theory (DFT), whereas discrete variable representation (DVR) and Dunham methodologies are employed to obtain spectroscopic constants and hence the lifetimes of the systems. Our results suggest that nitrogen-doped graphene quantum dots are promising structures as far as sensing applications of CO2 are concerned. Graphical Abstract Adsorption mechanism of the CO2 molecule in (a) a pristine and (b) a nitrogendoped Graphene Quantum Dot.
Keyphrases
- quantum dots
- density functional theory
- molecular docking
- sensitive detection
- molecular dynamics
- walled carbon nanotubes
- molecular dynamics simulations
- room temperature
- aqueous solution
- carbon nanotubes
- energy transfer
- optical coherence tomography
- gold nanoparticles
- reduced graphene oxide
- highly efficient
- crystal structure