Search: id:"swepub:oai:DiVA.org:uu-469716" >
Catalyzing Bond-Dis...
Catalyzing Bond-Dissociation in Graphene via Alkali-Iodide Molecules
-
- Vats, Nilesh (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Negi, Devendra S. (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Singh, Deobrat (author)
- Uppsala universitet,Materialteori,Condensed Matter Theory Group
-
show more...
-
- Sigle, Wilfried (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Abb, Sabine (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Sen, Suman (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Szilagyi, Sven (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Ochner, Hannah (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
- Ahuja, Rajeev, 1965- (author)
- Uppsala universitet,Materialteori,Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.;Indian Inst Technol Ropar, Dept Phys, Rupnagar 140001, Punjab, India.,Condensed Matter Theory Group
-
- Kern, Klaus (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.;Ecole Polytech Fed Lausanne, Inst Phys Matiere Condensee, CH-1015 Lausanne, Switzerland.
-
- Rauschenbach, Stephan (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.;Univ Oxford, Dept Chem, 12 Mansfield Rd, Oxford OX1 3TA, England.
-
- van Aken, Peter A. (author)
- Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany.
-
show less...
-
Max Planck Inst Solid State Res, Heisenberstr 1, D-70569 Stuttgart, Germany Materialteori (creator_code:org_t)
- 2021-09-16
- 2021
- English.
-
In: Small. - : John Wiley & Sons. - 1613-6810 .- 1613-6829. ; 17:42
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://uu.diva-port... (primary) (Raw object)
-
https://onlinelibrar...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Atomic design of a 2D-material such as graphene can be substantially influenced by etching, deliberately induced in a transmission electron microscope. It is achieved primarily by overcoming the threshold energy for defect formation by controlling the kinetic energy and current density of the fast electrons. Recent studies have demonstrated that the presence of certain species of atoms can catalyze atomic bond dissociation processes under the electron beam by reducing their threshold energy. Most of the reported catalytic atom species are single atoms, which have strong interaction with single-layer graphene (SLG). Yet, no such behavior has been reported for molecular species. This work shows by experimentally comparing the interaction of alkali and halide species separately and conjointly with SLG, that in the presence of electron irradiation, etching of SLG is drastically enhanced by the simultaneous presence of alkali and iodine atoms. Density functional theory and first principles molecular dynamics calculations reveal that due to charge-transfer phenomena the C-C bonds weaken close to the alkali-iodide species, which increases the carbon displacement cross-section. This study ascribes pronounced etching activity observed in SLG to the catalytic behavior of the alkali-iodide species in the presence of electron irradiation.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- ab inito calculations and alkali halides
- catalysis
- electrospray ion-beam deposition
- graphene
- high-resolution transmission electron microscopy
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
-
Small
(Search for host publication in LIBRIS)
To the university's database
- By the author/editor
-
Vats, Nilesh
-
Negi, Devendra S ...
-
Singh, Deobrat
-
Sigle, Wilfried
-
Abb, Sabine
-
Sen, Suman
-
show more...
-
Szilagyi, Sven
-
Ochner, Hannah
-
Ahuja, Rajeev, 1 ...
-
Kern, Klaus
-
Rauschenbach, St ...
-
van Aken, Peter ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
-
and Materials Chemis ...
- Articles in the publication
-
Small
- By the university
-
Uppsala University