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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 7
Affiliation:
[1] Univ Estadual Campinas, Chem Inst, BR-13083861 Campinas, SP - Brazil
[2] Univ Calif Riverside, Riverside, CA 92521 - USA
Total Affiliations: 2
Document type: Journal article
Source: Microchemical Journal; v. 146, p. 1083-1089, MAY 2019.
Web of Science Citations: 1
Abstract

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)

FAPESP's process: 14/50867-3 - INCT 2014: National Institute of Science and Technology in Bioanalysis
Grantee:Lauro Tatsuo Kubota
Support type: Research Projects - Thematic Grants
FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
Grantee:Fernando Galembeck
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/06478-3 - Use of 3D printing on the fabrication of microfluidic devices
Grantee:José Alberto Fracassi da Silva
Support type: Regular Research Grants