Title :

A novel laser-based method to measure the adsorption energy on carbonaceous surfaces

Author(s) :

Duca, D. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Physique Moléculaire aux Interfaces [PMI]
Pirim, C. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Physique Moléculaire aux Interfaces [PMI]
Vojkovic, M. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Carpentier, Y. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Physique Moléculaire aux Interfaces [PMI]
Faccinetto, Alessandro [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Ziskind, M. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Physique Moléculaire aux Interfaces [PMI]
Preda, C. [Auteur]
Laboratoire Paul Painlevé - UMR 8524 [LPP]
Focsa, Cristian [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Physique Moléculaire aux Interfaces [PMI]

Journal title :

Carbon

Pages :

540-556

Publisher :

Elsevier

Publication date :

2020-10-28

ISSN :

0008-6223

English keyword(s) :

Carbonaceous surfaces
Adsorption energy
Laser-induced thermal desorption
Mass spectrometry
Bayesian statistics

HAL domain(s) :

Physique [physics]

English abstract : [en]

The reactivity of carbonaceous surfaces bears a fundamental role in various fields, from atmospheric chemistry and catalysis to graphene and nanoparticles. This reactivity is mainly driven by the surface chemical composition ...
Show more >The reactivity of carbonaceous surfaces bears a fundamental role in various fields, from atmospheric chemistry and catalysis to graphene and nanoparticles. This reactivity is mainly driven by the surface chemical composition and by the strength of the interaction between the adsorbates and the surface (physi-/chemisorption). While the surface composition of complex natural samples can be well characterized, adsorption energies (ergo, adsorption processes) of the corresponding adsorbate/adsorbent systems are often overlooked. We propose a novel laser-based method for measuring the adsorption energy of chemical species on various carbonaceous surfaces. The proof of concept of this original method has first been demonstrated by deriving adsorption energies of various systems consisting of polycyclic aromatic hydrocarbons and activated carbon. The great potential of this fast, spatially resolved, and surface-sensitive method, which can also act as a defect density probe at the mesoscale, has been further demonstrated through the study of systems of increasing complexity.Show less >

Language :

Anglais

Popular science :

Non

ANR Project :

Dévoilement du mécanisme de nucléation dans les gaz d'échappement des moteurs d'avion et de son lien avec la composition du carburant

Collections :

• Laboratoire Paul Painlevé - UMR 8524

Source :

Harvested from HAL