P15 超音波間接照射によるフェニルリン酸鉄微粒子の分散(ポスターセッション)

概要

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Recently, two-dimensions (2D) nano-structured material such as nanosheet is of great interest for preparation of high surface area catalyst, self-consistent film and so forth. Although there are many studies reported about the nanosheet obtained by ultrasonic dispersion, there are few reports to clarify mechanism of ultrasonic dispersion and derive a dispersion rate equation indispensable for designing ultrasonic apparatus. In this study, FePP ethanol suspension was employed as the model layered material and it can be dispersed to nanosize by the ultrasound. The dispersion process was observed by transmittance change of the suspension. First, the transmittance showed slight change, but after 40 min it was drastically increased. Next, we defined the dispersion ratio by using membrane filter separating particles more than 220nm. By using this, the experimental result could be linearly fitted by the logistic function. Finally, the mechanism was modeled by the random split model. The model clearly reproduced the results and the dispersion mechanism, consequently, could be modeled by the dispersion rate equation based on the logistic function and the random split model.
日本ソノケミストリー学会の論文
2013-10-25