High‐Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform

High‐Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform
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通过连续微流控合成平台高通量合成均匀的银种子颗粒

DOI:
10.1002/ceat.201400524
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发表时间:
--
影响因子:
2.1
通讯作者:
W. Fritzsche
W. Fritzsche
中科院分区:
工程技术4区
文献类型:
--
作者:
M. Thiele;A. Knauer;A. Csáki;D. Mallsch;Th. Henkel;J. M. Köhler;W. Fritzsche

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受控的银颗粒几何形状至少需要分两个步骤进行合成,这两个步骤的反应动力学差异很大。第一步,将非常快速的种子形成、基于混沌平流的微混合器与用于生长步骤的间歇式反应器结合起来进行测试。可以大批量制备尺寸分布窄、形状均匀性优异的纳米粒子。为了获得高度可重复且均匀的颗粒溶液,建立了包含三个不同微混合器的微流体系统,用于化学前体的最佳混合,从而可以严格控制每个合成步骤。产生的银颗粒可以用作形成各向异性颗粒的种子。它们的进一步潜力通过各向异性银三角形的制备得到了证明。由此产生的种子颗粒比传统批量合成的种子颗粒更适合生长为三角形。
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.
DOI: 10.1007/s11051-013-1531-7
发表时间: 2013-03
影响因子: 2.5
作者:
T. Schneider;N. Jahr;J. Jatschka;A. Csáki;O. Stranik;W. Fritzsche
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影响因子: 3.7
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