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Microfluidic-assisted synthesis of uniform polymer-stabilized silver colloids
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SYSNO ASEP 0541189 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Microfluidic-assisted synthesis of uniform polymer-stabilized silver colloids Author(s) Batista, C. C. S. (BR)
Jäger, Alessandro (UMCH-V) RID, ORCID
Albuquerque, B. L. (BR)
Pavlova, Ewa (UMCH-V) RID
Štěpánek, Petr (UMCH-V) RID, ORCID
Giacomelli, F. C. (BR)Article number 126438 Source Title Colloids and Surfaces A-Physicochemical and Engineering Aspects. - : Elsevier - ISSN 0927-7757
Roč. 618, 5 June (2021)Number of pages 11 s. Language eng - English Country NL - Netherlands Keywords silver nanoparticles ; microfluidics ; polymers Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GJ20-13946Y GA ČR - Czech Science Foundation (CSF) LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000642459500005 EID SCOPUS 85102436762 DOI 10.1016/j.colsurfa.2021.126438 Annotation We report the controlled synthesis of polymer-stabilized silver nanoparticles (AgNPs) by using microfluidic devices. The microfluidic-based method enabled the preparation of sub-50 nm AgNPs which are much more homogenous compared to those produced in batch reactors where the control over flow and mixing conditions was not performed. The concentration of the silver precursor (silver nitrate - AgNO3) can be tuned to reach smaller or larger nanoparticles, although within a fairly narrow range. Regardless of the polymeric shell, the reducing agent concentration influences the size and polydispersity of the manufactured silver colloids, and relatively lower amounts allow for the manufacturing of more homogeneous nanoparticles. Notably, the use of the block copolymer PEO-b-P2VP as stabilizing agent leads to larger nanoparticles (23–51 nm) compared to those stabilized by PVP (7–14 nm) as possibly linked to different arrangements of the polymer chains at the interface between the precursor solutions. The produced AgNPs are highly uniform, with size distribution width influenced by the polymer concentration (FWHM < 100 nm were determined at higher concentrations), although this variable does not have a distinguished effect on the final size of the manufactured colloids. Overall, we provide relevant new knowledge within the framework of polymer-stabilized AgNPs since a variety of other polymer chains can be probed, possibly with different outcomes regarding the final particle size. The reported findings can thus guide to significant advances towards the manufacturing of highly homogeneous polymer-coated metallic colloids, particularly when a target size is required. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S0927775721003071?via%3Dihub
Number of the records: 1