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Radical Adsorption onto CO Intercalated Graphene

Linehan, David LU (2018) FYSK02 20171
Synchrotron Radiation Research
Department of Physics
Abstract
This project studies with scanning tunneling microscopy (STM) if radicals can adsorb onto the surface of graphene flakes which had been intercalated with CO. To obtain CO intercalated flakes of graphene, flakes of pristine graphene are formed, and subsequently intercalated by a super dense “water” phase. This water phase allows for the intercalation of CO, where it is observed that flakes are intercalated digitally; either fully intercalated or not at all. After dosing radicals, it is observed that, while radicals readily adsorbed onto bare flakes of graphene, flakes of CO intercalated graphene are nearly universally adsorbate free. Following a new round of annealing and CO dosing, it is found that the sample possessed flakes with CO... (More)
This project studies with scanning tunneling microscopy (STM) if radicals can adsorb onto the surface of graphene flakes which had been intercalated with CO. To obtain CO intercalated flakes of graphene, flakes of pristine graphene are formed, and subsequently intercalated by a super dense “water” phase. This water phase allows for the intercalation of CO, where it is observed that flakes are intercalated digitally; either fully intercalated or not at all. After dosing radicals, it is observed that, while radicals readily adsorbed onto bare flakes of graphene, flakes of CO intercalated graphene are nearly universally adsorbate free. Following a new round of annealing and CO dosing, it is found that the sample possessed flakes with CO intercalation channels and other forms of non-digital intercalation. Previously CO intercalation channels could only be found during very brief (several seconds) exposure to CO. This information suggests that the intercalation of CO somehow precludes the adsorption of these radicals, and vice versa. (Less)
Popular Abstract
Even the world's most interesting material has its limits. It is possible to add material beneath graphene, and it is possible to add material on top of graphene, but not always at the same time. This doesn’t have to be a bad thing though. If you wanted to control the flow of objects beneath graphene, for example, you could guide it from the top. In this project, how material above and below graphene interacts will be studied.
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author
Linehan, David LU
supervisor
organization
course
FYSK02 20171
year
type
M2 - Bachelor Degree
subject
keywords
Intercalation, Graphene, Scanning Tunneling Microscopy, Radicals
language
English
id
8963967
date added to LUP
2018-12-11 11:34:07
date last changed
2018-12-11 11:34:07
@misc{8963967,
  abstract     = {{This project studies with scanning tunneling microscopy (STM) if radicals can adsorb onto the surface of graphene flakes which had been intercalated with CO. To obtain CO intercalated flakes of graphene, flakes of pristine graphene are formed, and subsequently intercalated by a super dense “water” phase. This water phase allows for the intercalation of CO, where it is observed that flakes are intercalated digitally; either fully intercalated or not at all. After dosing radicals, it is observed that, while radicals readily adsorbed onto bare flakes of graphene, flakes of CO intercalated graphene are nearly universally adsorbate free. Following a new round of annealing and CO dosing, it is found that the sample possessed flakes with CO intercalation channels and other forms of non-digital intercalation. Previously CO intercalation channels could only be found during very brief (several seconds) exposure to CO. This information suggests that the intercalation of CO somehow precludes the adsorption of these radicals, and vice versa.}},
  author       = {{Linehan, David}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Radical Adsorption onto CO Intercalated Graphene}},
  year         = {{2018}},
}