Work

Extracting Residence Times of Nitric Oxide on Graphene through Combination of Time-of-Flight and Velocity Map Imaging

Year: 2024

Type: article

Abstract: In this work, energy transfer between nitric oxide radicals and graphene was measured as a function of incidence energy, and residence times of the trapped NO molecules were extracted. This was done by combining time-of-flight methods with surface-velocity map imaging and by the forward simulation of the expected arrival profiles. Combining these two techniques allows us to derive those residence times even though the employed molecular beams have opening times that would otherwise prevent such measurements if only one of these experimental techniques was used in isolation. We find that significant energy transfer to the graphene occurs, increasing with increasing incidence energy, and that trapped NO may reside on the graphene for tens of microseconds at room temperature.

Source: The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.4c06342

Authors: Thomas Greenwood, Sven P. K. Koehler

Institutions: Manchester Metropolitan University, Hochschule Hannover

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Royal Society

Award: G4434948579