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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

3D-printed microfluidic device for the synthesis of silver and gold nanoparticles

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Autor(es):
Bressan, Lucas P. [1] ; Robles-Najar, Jessica [2] ; Adamo, Cristina B. [1] ; Quero, Reverson F. [1] ; Costa, Brenda M. C. [1] ; de Jesus, Dosil P. [1] ; da Silva, Jose A. F. [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Chem Inst, BR-13083861 Campinas, SP - Brazil
[2] Univ Calif Riverside, Riverside, CA 92521 - USA
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Microchemical Journal; v. 146, p. 1083-1089, MAY 2019.
Citações Web of Science: 1
Resumo

For the first time, a 3D-printed microfluidic device based on fused deposition modeling was created using poly (lactic acid) as the 3D-printed part on top of a poly(methyl methacrylate) slide, allowing the creation of transparent microfluidic channels and used on the continuous-flow synthesis of silver and gold nanoparticles. In order to reduce fouling inside the microchannels, the device was optimized to use a segmented flow of mineral oil. The synthesized nanoparticles were characterized by UV-Visible spectroscopy and scanning and transmission electron microscopy. Silver nanoparticles were synthesized using different concentrations of sodium borohydride and flow rates of reactants (30 and 120 mu L min(-1)) at 20 degrees C, with sizes ranging from 5 +/- 2 nm to 8 +/- 3 nm and verified to be stable for at least three weeks. Subsequently, the silver nanoparticles were applied on measurement of gallic acid using a modified carbon paste electrode. Gold nanoparticles were synthesized at 90 degrees C varying the concentration of trisodium citrate and flow rates of reactants (40 and 100 mu L min(-1)), yielding sizes from 20 +/- 9 to 34 +/- 12 nm and verified to be stable for at least three weeks. Afterwards, the gold nanoparticles were employed in surfaced enhanced Raman scattering using crystal violet as model molecule. (AU)

Processo FAPESP: 14/50867-3 - INCT 2014: Instituto Nacional de Ciência e Tecnologia de Bioanalítica
Beneficiário:Lauro Tatsuo Kubota
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 14/50906-9 - INCT 2014: em Materiais Complexos Funcionais (INOMAT)
Beneficiário:Fernando Galembeck
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 18/06478-3 - Aplicação da técnica de impressão direta 3D na construção de dispositivos microfluídicos
Beneficiário:José Alberto Fracassi da Silva
Linha de fomento: Auxílio à Pesquisa - Regular