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Nanographene growth from benzene on Pt(111)
- Source :
- Surface Science. 711:121874
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Graphene growth on a Pt(111) substrate exposed to benzene was studied at substrate temperatures between 800 K and 1100 K. The effects of the substrate temperature during benzene exposure and post-annealing were examined. It was revealed that the substrate temperature during benzene exposure determined the graphene size, which was measured using scanning tunneling microscopy (STM). Nanographenes (NGs) of ~10 nm in size. were obtained by exposing the substrate to benzene at 800 K and post-annealing at 1100 K. The presence of a C–Pt bond, which may fix the carbon atoms on the Pt(111) surface and suppress any further growth of graphene, was confirmed by the carbon K-edge near-edge X-ray absorption fine structure spectroscopy (C K NEXAFS) and X-ray photoelectron spectroscopy (XPS) for the NG. Angle resolved photoemission spectroscopy (ARPES) performed on the NG has a reduced density of states at the Fermi level.
- Subjects :
- Materials science
Graphene
Analytical chemistry
Substrate (chemistry)
Angle-resolved photoemission spectroscopy
02 engineering and technology
Surfaces and Interfaces
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
XANES
0104 chemical sciences
Surfaces, Coatings and Films
law.invention
chemistry.chemical_compound
X-ray photoelectron spectroscopy
chemistry
law
Materials Chemistry
Scanning tunneling microscope
0210 nano-technology
Spectroscopy
Benzene
Subjects
Details
- ISSN :
- 00396028
- Volume :
- 711
- Database :
- OpenAIRE
- Journal :
- Surface Science
- Accession number :
- edsair.doi...........a0575050be243e5ec60aa9130e3ef5d0
- Full Text :
- https://doi.org/10.1016/j.susc.2021.121874