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Type: Journal article
Title: 2H and 4H silver colloidal suspension synthesis, as a new potential drug carrier
Author: Wojnicki, M.
Tokarski, T.
Hessel, V.
Fitzner, K.
Luty-Błocho, M.
Citation: Chemical Engineering Journal, 2019; 382:122922-1-122922-6
Publisher: Elsevier
Issue Date: 2019
ISSN: 1385-8947
Statement of
Marek Wojnicki, Tomasz Tokarski, Volker Hessel, Krzysztof Fitzner, Magdalena Luty-Błocho
Abstract: In this paper diffusion impact on the silver nanoparticles synthesis and their crystal structure is shown. For this purpose, comparative studies between continuous flow two-phase microdroplets systems vs. two-phase batch reactor were performed. Such two-phase configuration of the investigated system makes it possible to study the impact of mass transfer phenomenon on the nanoparticles formation process. In the case of two-phase microdroplets system, diffusion is replaced by convection, accelerated by interphase friction between water droplets and a continuous organic phase. It was concluded that under diffusion control it was possible to obtain silver nanoparticles with a hexagonal crystal structure. Moreover, for the first time using a chemical method, and diffusion rate-limiting step, the hexagonal structure 4H and 2H of Ag nanoparticles were synthesized. We suggest, that such hexagonal crystals can be applied as a smart drug delivery system, where the drug releases can be controlled by short light impulse. In effects, thermodynamically unstable 4H and 2H crystals transform to more dense-packed FCC structure.
Keywords: Droplets; microreactor; silver nanoparticles; DMAB; hexagonal crystal structure
Rights: © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
DOI: 10.1016/j.cej.2019.122922
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Chemical Engineering publications

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