Graphene growth on Ni (1 1 1) by CO exposure at near ambient pressure

Davì, Rocco; Carraro, Giovanni; Stojkovska, Marija; Smerieri, Marco; Savio, Letizia; Lewandowski, Mikołaj; Gallet, Jean‐Jacques; Bournel, Fabrice; Rocca, M.; Vattuone, L.

doi:10.1016/j.cplett.2021.138596

Cited by 11 publications

(11 citation statements)

References 33 publications

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“…This conclusion is supported by a recent combined experimental and theoretical study demonstrating the occurrence of CO intercalation through vacancies following exposure in the mbar pressure range; in this case the process is more efficient if the G layer is doped with N atoms [29]. Almost in parallel, in-operando experiments revealed that intercalated CO reacts undercover to produce CO 2 via the Boudouard reaction [32].…”

Section: Reactivity At Graphene Vacanciesmentioning

confidence: 59%

“…Almost in parallel, in-operando experiments revealed that intercalated CO reacts undercover to produce CO2 via the Boudouard reaction. [32] Artificially created defects can be used for functionalisation. Besides the example of functionalisation with aryl radicals mentioned above [10], we mention that C vacancies produced by low energy Ar + bombardment on G/SiC(0001) can adsorb p-aminophenol (p-AP), a model molecule with an aromatic ring and two different ending groups (see Figure 8a-c for STM images and Figure 8d-f for the corresponding models) [23].…”

Section: Reactivity At Graphene Vacanciesmentioning

confidence: 99%

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Influence of Defects and Heteroatoms on the Chemical Properties of Supported Graphene Layers

Carraro¹,

Savio²,

Vattuone

2022

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A large and growing number of theoretical papers report the possible role of defects and heteroatoms on the chemical properties of single-layer graphene. Indeed, they are expected to modify the electronic structure of the graphene film, allow for chemisorption of different species, and enable more effective functionalisation. Therefore, from theoretical studies, we get the suggestion that single and double vacancies, Stone–Wales defects and heteroatoms are suitable candidates to turn nearly chemically inert graphene into an active player in chemistry, catalysis, and sensoristics. Despite these encouraging premises, experimental proofs of an enhanced reactivity of defected/doped graphene are limited because experimental studies addressing adsorption on well-defined defects and heteroatoms in graphene layers are much less abundant than theoretical ones. In this paper, we review the state of the art of experimental findings on adsorption on graphene defects and heteroatoms, covering different topics such as the role of vacancies on adsorption of oxygen and carbon monoxide, the effect of the presence of N heteroatoms on adsorption and intercalation underneath graphene monolayers, and the role of defects in covalent functionalisation and defect-induced gas adsorption on graphene transistors.

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Section: Reactivity At Graphene Vacanciesmentioning

confidence: 59%

Section: Reactivity At Graphene Vacanciesmentioning

confidence: 99%

Influence of Defects and Heteroatoms on the Chemical Properties of Supported Graphene Layers

Carraro¹,

Savio²,

Vattuone

2022

Coatings

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“…As we demonstrated in ref. 21, this process can be observed at RT only under NAP conditions thanks to the accumulation of CO 2 under the graphene cover.…”

Section: Resultsmentioning

confidence: 99%

“…To perform this analysis, we applied the same procedure used in ref. 16 and 21. Since the adsorbed coverage cannot be determined directly from the XPS intensities due to the temperature and pressure dependent attenuation of the photoemission signals, we evaluate them by assuming that the carbon layer is closed.…”

Section: Discussionmentioning

confidence: 99%