Engineering two-dimensional gold nanostructures using graphene oxide nanosheets as a template

Autor(es)

Marangoni, Valeria S. ^[1] ; Germano, Lucas D. ^[1] ; Silva, Cecilia C. C. ^[1] ; de Souza, Eunezio A. ^[1] ; Maroneze, Camila M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, BR-01302907 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: NANOSCALE; v. 10, n. 28, p. 13315-13319, JUL 28 2018.
• Citações Web of Science: 3

Resumo

The rich plasmon resonance modes and local field enhancements of two-dimensional (2D) noble metal nanostructures have boosted their application in distinct areas like catalysis, photonics, medicine and sensing. Here, we develop a unique strategy for the controlled growth of asymmetric 2D gold nanostructures in aqueous media using graphene oxide as a template. By performing mild reduction of gold ions on the surface of Au seeds (approximate to 2 nm) attached to graphene oxide nanosheets, the anisotropic growth of 2D gold nanostructures can be carried out through a simple procedure with a tunable control of the final size, shape and thickness, and consequently on their optical properties, without using surfactants. (AU)

• Processo FAPESP: 16/20799-1 - Arquiteturas de heteroestruturas de van der Waals em meio líquido: aplicação em dispositivos fotônicos
• Beneficiário: Valeria Spolon Marangoni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS
• Beneficiário: Antonio Helio de Castro Neto
• Modalidade de apoio: Auxílio à Pesquisa - Programa SPEC