OCHOA-VAZQUEZ, Gustavo; KHARISOV, Boris; ARIZMENDI-MORQUECHO, Ana; CARIO, Anaïs; AYMONIER, Cyril; MARRE, Samuel; LÓPEZ, Israel

doi:10.1109/TNB.2021.3101189

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OCHOA-VAZQUEZ, Gustavo
Facultad de Ciencias Químicas

KHARISOV, Boris
Facultad de Ciencias Químicas

ARIZMENDI-MORQUECHO, Ana

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Article de revue

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IEEE Transactions on NanoBioscience. 2022, vol. 21, n° 1, p. 135-140

Institute of Electrical and Electronics Engineers

Resumen en inglés

We present in here a simple and low cost continuous segmented-flow process for the synthesis of Ag and Au spherical-shaped nanoparticles. Different residence times (RT) were used to perform the nanoparticle synthesis, observing that at low RT, the Ag nanoparticles production, which uses a fast reduction reaction with NaBH4, is improved due to an enhancement in the mixing of the reactants. However, the flow conditions have an opposite effect in the case of Au nanoparticles synthesis. Indeed, since the chemical reduction process (Turkevich method) exhibit a much slower kinetics, high RT (low flowrates) improve the synthesis yield and the quality of the nanoparticles. The Ag and Au nanoparticles were characterized by UV-Vis spectrophotometry (UV-Vis) and Transmission Electron Microscopy (TEM). The Ag spherical-shaped nanoparticles presented a LSPR at 400 nm (size ≈ 4 nm), while the synthesized Au nanoparticles exhibit LSPR and sizes in the range 520 - 550 nm and 14 - 17 nm, respectively.< Leer menos

Palabras clave en inglés

Ag nanoparticles

Au nanoparticles

Flow synthesis

Microfluidics

Microfluidic synthesis

Noble metal nanoparticles

DOI

http://dx.doi.org/10.1109/TNB.2021.3101189

Proyecto europeo

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Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026