Huang, H;
Toit, HD;
Jaber, SB;
Wu, G;
Panariello, L;
Thanh, NTK;
Parkin, IP;
(2019)
Rapid Synthesis of Gold Nanoparticles with Carbon Monoxide in a Microfluidic Segmented Flow System.
Reaction Chemistry & Engineering
, 4
(5)
pp. 884-890.
10.1039/C8RE00351C.
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Abstract
A microfluidic reactor was developed to enhance the speed (reaction time <4 min) and control of the synthesis of gold nanoparticles (3–25 nm) with or without capping agents using carbon monoxide as gaseous reductant, which is easy to remove from the reaction mixture by venting. Gas–liquid segmented flow was formed inside a 1 mm inner diameter coiled flow inverter with aqueous gold precursor and the reducing gas to produce gold nanoparticles with polydispersity as low as 5%. The uncapped gold nanoparticles make the product attractive for surface-enhanced Raman scattering, and showed an average enhancement factor of 1.94 × 105. Various capping agents (tri-sodium citrate, polysorbate 80, oleylamine and poly(ethyleneglycol) 2-mercaptoethyl ether acetic acid) and different operational parameters were also tested, demonstrating that the proposed synthesis is flexible and can continuously produce a variety of gold nanoparticles, with potential for other applications.
| Type: | Article |
|---|---|
| Title: | Rapid Synthesis of Gold Nanoparticles with Carbon Monoxide in a Microfluidic Segmented Flow System |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/C8RE00351C |
| Publisher version: | https://doi.org/10.1039/C8RE00351C |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (https://creativecommons.org/licenses/by/3.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10071759 |
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