Chemical Engineering & Technology

Cover image for Vol. 38 Issue 8

Impact Factor: 2.442

ISI Journal Citation Reports © Ranking: 2014: 33/134 (Engineering Chemical)

Online ISSN: 1521-4125

Associated Title(s): Chemie Ingenieur Technik, ChemBioEng Reviews, Energy Technology

Editors' Choice

Every month, the Editors select two papers referring to current discussions in the scientific, public and economic communities and in view of the potential for further developments. The papers are freely accessible for one month.

High-Throughput Synthesis of Uniform Silver Seed Particles

July 14, 2015

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Metal nanoparticles are becoming favorite objects in current plasmonics. Their extraordinary optical properties in form of sharp optical resonances, i.e., localized surface plasmon resonances (LSPR), are based on coherent oscillations of free conductive electrons upon irradiating electromagnetic waves. The position of the LSPR and, therefore, the potential application strongly depends on the material, size, and shape of the nanoparticles. These factors can be adjusted by the chemical synthesis. For an optimal synthesis, the mixing parameters are of key importance. Changes in mixing conditions can result in uncontrollable colloid morphologies and/or various sizes. Therefore, with increasing complexity of the particle shape, more control during the synthesis is needed. A. Csáki et al. described a novel system with a combination of different microfluidic units to create small and monodisperse silver seed particles. The device combined three different micromixers, namely, a split-and-recombine-mixer, a T-shaped mixer, and a Dean-flow-mixer, in one platform for a defined fluid manipulation. The chemical adducts were optimally mixed, and the resulting seed particles are well-defined and sufficiently small for the subsequent synthesis step, i.e., the growth in triangular-shaped geometry in batch.


Matthias Thiele, Andrea Knauer, Andrea Csáki*, Daniell Mallsch, Thomas Henkel, Johann Michael Köhler, and Wolfgang Fritzsche
High-Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform
Chem. Eng. Technol. 2015, 38 (7), 1131-1137.
DOI: 10.1002/ceat.201400524



 

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