Artigo De: orcid, scopus

Towards large-scale in free-standing graphene and N-graphene sheets

Nature: Scientific Reports

Tatarova, E.; Dias, A.; Gonçalves, B. — 2017

Informações chave

Autores:

Tatarova, E. (Elena Stefanova Tatarova); Dias, A. (Ana Inês Vieitas de Amaral Dias); Henriques, J. (Júlio Paulo dos Santos Duarte Vieira Henriques); Abrashev, M.; Bundaleska, N. (Neli Danchova Bundaleska); Kovacevic, E. (Edgar Martinho da Silva Felizardo); Bundaleski, N.; Cvelbar, U.; Valcheva, E.; Arnaudov, B.; Do Rego, A.M.B. (Ana Maria Pereira Lopes Redondo Botelho do Rego); Ferraria, A.M. (Ana Maria da Conceição Ferraria); Berndt, J.; Felizardo, E.; Teodoro, O.M.N.D.; Strunskus, T.; Alves, L.L. (Luís Paulo Da Mota Capitão Lemos Alves); Gonçalves, B. (Bruno Miguel Soares Gonçalves)

Publicado em

01/12/2017

Resumo

One of the greatest challenges in the commercialization of graphene and derivatives is production of high quality material in bulk quantities at low price and in a reproducible manner. The very limited control, or even lack of, over the synthesis process is one of the main problems of conventional approaches. Herein, we present a microwave plasma-enabled scalable route for continuous, large-scale fabrication of free-standing graphene and nitrogen doped graphene sheets. The method’s crucial advantage relies on harnessing unique plasma mechanisms to control the material and energy fluxes of the main building units at the atomic scale. By tailoring the high energy density plasma environment and complementarily applying in situ IR and soft UV radiation, a controllable selective synthesis of high quality graphene sheets at 2 mg/min yield with prescribed structural qualities was achieved. Raman spectroscopy, scanning electron microscopy, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy and Near Edge X-ray-absorption fine-structure spectroscopy were used to probe the morphological, chemical and microstructural features of the produced material. The method described here is scalable and show a potential for controllable, large-scale fabrication of other graphene derivatives and promotes microwave plasmas as a competitive, green, and cost-effective alternative to presently used chemical methods.

Detalhes da publicação

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Título do contentor da publicação

Nature: Scientific Reports

Volume

7

Fascículo

1075

DOI

10.1038/s41598-017-10810-3

Domínio Científico (FOS)

physical-sciences - Física

Idioma da publicação (código ISO)

eng - Inglês

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