Počet záznamů: 1
Microfluidic-assisted synthesis of uniform polymer-stabilized silver colloids
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SYSNO ASEP 0541189 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Microfluidic-assisted synthesis of uniform polymer-stabilized silver colloids Tvůrce(i) 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)Číslo článku 126438 Zdroj.dok. Colloids and Surfaces A-Physicochemical and Engineering Aspects. - : Elsevier - ISSN 0927-7757
Roč. 618, 5 June (2021)Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova silver nanoparticles ; microfluidics ; polymers Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GJ20-13946Y GA ČR - Grantová agentura ČR LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000642459500005 EID SCOPUS 85102436762 DOI 10.1016/j.colsurfa.2021.126438 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0927775721003071?via%3Dihub
Počet záznamů: 1