An Experimental and Modeling Study of Nanoparticle Formation and Growth from Dimethylamine and Nitric Acid
An Experimental and Modeling Study of Nanoparticle Formation and Growth from Dimethylamine and Nitric Acid
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DOI：
10.1021/acs.jpca.9b03326
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发表时间：
2019-07-04
影响因子：
2.9
通讯作者：
Smith, James N.
中科院分区：
文献类型：
--
作者：
Chee, Sabrina;Myllys, Nanna;Smith, James N.
在实验室中，通过使气相硝酸（HNO 3）和二甲胺（DMA）在流动管中在比该系统中的任何其他酸/碱比率小的干燥（10（7））蒸发速率下反应，研究了通过酸碱反应性吸收形成和生长的纳米颗粒的尺寸分辨组合物，并且测量的纳米颗粒组合物证实这是生长高达30 nm颗粒的最稳定途径。这项研究表明，纳米粒子的形成和增长，通过酸碱反应吸收硝酸和DMA遵循热力学理论，可能是因为这两种成分的挥发性。
The size-resolved composition of nanoparticles formed and grown through acid-base reactive uptake has been studied in the laboratory by reacting gas-phase nitric acid (HNO3) and dimethylamine (DMA) in a flow tube under dry (10(7) smaller evaporation rates than any other acid/base ratio in this system, and measured nanoparticle composition confirm this to be the most stable pathway for growth up to 30 nm particles. This study demonstrates that nanoparticle formation and growth via acid-base reactive uptake of HNO3 and DMA follow the thermodynamic theory, likely because of both components' volatility.