Design of metal nanoparticle synthesis by vapor flow condensation
Design of metal nanoparticle synthesis by vapor flow condensation
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DOI：
10.1016/s0009-2509(02)00064-7
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发表时间：
2002-05
影响因子：
4.7
通讯作者：
K. Wegner;B. Walker;S. Tsantilis;S. Pratsinis
中科院分区：
文献类型：
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作者：
K. Wegner;B. Walker;S. Tsantilis;S. Pratsinis
本文对管流中蒸气冷凝法连续合成金属铋纳米颗粒进行了系统的工程研究。气溶胶成核，冷凝和凝聚的模拟铸造的设计图格式，以指导实验研究的过程参数对产品的纳米粒子特性的影响。流动可视化，示踪气体分析和计算流体动力学被用来解开粒子停留时间分布对产品形态的影响，在评价交替淬火设计的金属蒸气。通过控制淬灭气体流量、载气流量和工艺压力，制备了平均直径为12-37 nm的铋纳米颗粒，如通过氮吸附和X射线衍射测定的。
A systematic engineering study on continuous synthesis of bismuth metal nanoparticles by vapor condensation in tube flows is presented. Simulations of aerosol nucleation, condensation and coagulation are cast in a design diagram format to guide experimental studies on the effect of process parameters on product nanoparticle characteristics. Flow visualization, tracer gas analysis and computational fluid dynamics are used to unravel the effect of particle residence time distribution on product morphology during evaluation of alternate quenching designs for the metal vapor. Bismuth nanoparticles of average diameter 12–37 nm , as determined by nitrogen adsorption and X-ray diffraction, were made by controlling the quenching gas flow rate, carrier gas flow rate and process pressure.