Bottom-Up, Wet Chemical Technique for the Continuous Synthesis of Inorganic Nanoparticles
Bottom-Up, Wet Chemical Technique for the Continuous Synthesis of Inorganic Nanoparticles
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DOI：
10.3390/inorganics2010001
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发表时间：
2014-03-01
期刊：
影响因子：
2.9
通讯作者：
Kickelbick, Guido
中科院分区：
文献类型：
--
作者：
Betke, Annika;Kickelbick, Guido
用于生产无机纳米颗粒的连续湿化学方法对于大规模生产纳米颗粒是重要的。在这里，我们描述了一个自下而上，湿化学方法应用微喷射反应器。该技术允许在连续反应器环境中分离成核和生长。氧化锌（ZnO）、磁铁矿（Fe 3 O 4）以及透钙磷石（CaHPO 4中心点2 H（2）O），通过使用两种前体溶液的快速混合和从反应环境中快速去除核，可以连续地获得具有小粒度分布的颗粒。采用FT-IR、TGA、DLS、XRD和SEM等技术对最终颗粒进行了表征。对不同工艺参数（如流速和工艺温度）的影响进行的系统研究表明，颗粒尺寸会受到影响。得到粒径在44 nm和102 nm之间的氧化锌。所获得的磁铁矿颗粒具有在46 nm至132 nm范围内的粒度。水镁石的行为不同;所获得的颗粒形状像具有100 nm和500 nm之间的边长的小板。
Continuous wet chemical approaches for the production of inorganic nanoparticles are important for large scale production of nanoparticles. Here we describe a bottom-up, wet chemical method applying a microjet reactor. This technique allows the separation between nucleation and growth in a continuous reactor environment. Zinc oxide (ZnO), magnetite (Fe3O4), as well as brushite (CaHPO4 center dot 2H(2)O), particles with a small particle size distribution can be obtained continuously by using the rapid mixing of two precursor solutions and the fast removal of the nuclei from the reaction environment. The final particles were characterized by FT-IR, TGA, DLS, XRD and SEM techniques. Systematic studies on the influence of the different process parameters, such as flow rate and process temperature, show that the particle size can be influenced. Zinc oxide was obtained with particle sizes between 44 nm and 102 nm. The obtained magnetite particles have particle sizes in the range of 46 nm to 132 nm. Brushite behaves differently; the obtained particles were shaped like small plates with edge lengths between 100 nm and 500 nm.