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

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]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Chem Inst, BR-13083861 Campinas, SP - Brazil

^[2] Univ Calif Riverside, Riverside, CA 92521 - USA

• 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