Why is Micro Segmented Flow Particularly Promising for the Synthesis of Nanomaterials?
Why is Micro Segmented Flow Particularly Promising for the Synthesis of Nanomaterials?
复制标题
DOI：
10.1002/ceat.201200695
复制
发表时间：
2013-06-01
影响因子：
2.1
通讯作者：
Knauer, Andrea
中科院分区：
文献类型：
--
作者：
Koehler, Johann M.;Li, Shuning;Knauer, Andrea
微分段流的特殊优势进行了讨论相对于在纳米粒子的合成的具体要求。液体的比较、弹状流的输运行为、反应溶液与壁面之间的解耦以及由流动诱导的段内对流引起的快速径向传质和传热是实现微连续流动条件下的集中成核和均匀颗粒生长的最重要方面。此外，微流体段技术允许通过简单的流速变化自动实现大参数研究和组合调查。除了一些概念的工艺设计，ZnO微米和纳米粒子以及等离子体纳米粒子的合成的例子，以展示微分段流生成的高均匀性的纳米粒子和调整的粒子特性的权力。
The particular advantages of micro segmented flow are discussed with respect to the specific requirements in the synthesis of nanoparticles. Compartimentation of a liquid, slug-flow transport behavior, decoupling between reaction solution and wall, and induction of a fast radial mass and heat transfer by flow-induced segment-internal convection are the most important aspects for realizing a focussed nucleation and homogeneous particle growth under micro continuous-flow conditions. In addition, the micro fluid-segment technique allows the automated realization of large parameter studies and combinatorial investigations by a simple flow rate variation. Beside some concepts of process design, examples for the synthesis of ZnO micro- and nanoparticles as well as for plasmonic nanoparticles are given in order to demonstrate the power of micro segmented flow for generation of nanoparticles of high homogeneity and for tuning of particle properties.