Hydrogenation and dehydrogenation of nitrogen-doped graphene investigated by X-ray photoelectron spectroscopy

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Späth F, Zhao W, Gleichweit C, Gotterbarm K, Bauer U, Höfert O, Steinrück HP, Papp C
Zeitschrift: Surface Science
Verlag: Elsevier
Jahr der Veröffentlichung: 2015
Band: 634
Seitenbereich: 89--94
ISSN: 0039-6028


Abstract


We studied the hydrogenation and dehydrogenation of nitrogen-doped graphene (NDG) by in situ high-resolution X-ray photoelectron spectroscopy (XPS) and temperature-programmed XPS (TPXPS). Nitrogen-doped graphene was prepared by low energy nitrogen implantation in pristine graphene on Ni(111). Hydrogenation of NDG was performed by exposure to atomic hydrogen. Upon hydrogenation the XP spectra in the C 1s region reveal one new peak, shifted to lower binding energies as compared to graphene, which is associated with newly formed CH groups. In the N 1s region two ne wpeaks, shifted to higher binding energies are observed; these are associated with hydrogenated pyridinic and graphitic nitrogen. TPXPS spectra reveal a different thermal stability of the two hydrogenated nitrogen species,while the C–H groups of graphene show no significant changes compared to undoped hydrogenated graphene.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bauer, Udo Dr.
Lehrstuhl für Physikalische Chemie II
Gleichweit, Christoph
Lehrstuhl für Physikalische Chemie II
Höfert, Oliver
Lehrstuhl für Physikalische Chemie II
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Späth, Florian
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II
Zhao, Wei
Lehrstuhl für Physikalische Chemie II


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Forschungsbereiche

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Späth, F., Zhao, W., Gleichweit, C., Gotterbarm, K., Bauer, U., Höfert, O.,... Papp, C. (2015). Hydrogenation and dehydrogenation of nitrogen-doped graphene investigated by X-ray photoelectron spectroscopy. Surface Science, 634, 89--94. https://dx.doi.org/10.1016/j.susc.2014.11.009

MLA:
Späth, Florian, et al. "Hydrogenation and dehydrogenation of nitrogen-doped graphene investigated by X-ray photoelectron spectroscopy." Surface Science 634 (2015): 89--94.

BibTeX: 

Zuletzt aktualisiert 2018-10-08 um 01:24