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High‐Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform
Author(s) -
Thiele Matthias,
Knauer Andrea,
Csáki Andrea,
Mallsch Daniell,
Henkel Thomas,
Köhler Johann Michael,
Fritzsche Wolfgang
Publication year - 2015
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400524
Subject(s) - mixing (physics) , microfluidics , micromixer , particle (ecology) , materials science , nanotechnology , microreactor , particle size , nanoparticle , chemical engineering , chemistry , physics , organic chemistry , engineering , catalysis , oceanography , quantum mechanics , geology
Controlled silver particle geometries require at least a synthesis in two steps which strongly differ in their reaction kinetics. For the first step, the very fast seed formation, chaotic advection‐based micromixers are tested in combination with a batch reactor for the growth step. Nanoparticles with narrow size distribution and excellent shape uniformity can be prepared in large batches. To achieve a highly reproducible and homogeneous particle solution, a microfluidic system containing three different micromixers for optimal mixing of the chemical precursors is established, allowing stringent control of every synthesis step. The produced silver particles can be used as seeds for forming anisotropic particles. Their further potential is demonstrated by preparation of anisotropic silver triangles. The thus generated seed particles are better suited for growing to triangles than those from conventional batch synthesis.