Aging of starting solution for nanoparticles synthesis and application of two different sonication
Aging of starting solution for nanoparticles synthesis and application of two different sonication
复制标题
纳米颗粒合成起始溶液的老化及两种不同超声处理的应用
DOI：
10.1016/j.ultsonch.2020.105142
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发表时间：
2020
影响因子：
8.4
通讯作者：
J. Hojo
中科院分区：
文献类型：
--
作者：
N. Enomoto;M. Matsuo;M. Inada;K. Hayashi;J. Hojo
介绍了纳米粒子合成中老化起始溶液的新概念以及两种不同超声处理方法在老化中的应用。在液相超声法制备纳米粒子过程中，通常采用超声辐照的方法。在这项工作中，超声波被施加到一个起始solutionbeforesthesis。在SiO2球的合成过程中，老化过程延长了沉淀的诱导期，增大了球的尺寸，提高了SiO2球的单分散性。这些效果通过微弱功率（~1 mW）下的软超声处理来促进。在TiO 2球的情况下，普通（空化）超声在合成过程中被发现是有效的，在更球形的形状。此外，起始溶液的超声老化对于均匀的球体合成是有用的。讨论了水-乙醇等互溶液体的存在与纳米粒子成核的可能关系。
Novel concept of aging starting solutions for nanoparticle synthesis and the application of two different sonication to aging is introduced. In sonoprocess of nanoparticles from liquid phase, it is usual to irradiate ultrasound to areactingsolutionduringsynthesis. In this work, ultrasound is applied to a starting solutionbeforesynthesis. In case of the SiO2sphere synthesis, the aging process elongated the induction period of the precipitation, enlarge the sphere size, and enhanced the monodispersity of silica spheres. These effects were promoted by soft sonication at subtle power (~1 mW). In case of the TiO2sphere case, ordinary (cavitating) ultrasoundduringsynthesis was found to be effective in more spherical shape. Also, the sonication to aging of the starting solution was useful for uniform spheres synthesis. Existence of miscible liquid such as water-ethanol and feasible relationship to the nucleation of nanoparticles are discussed.