Bulletin of the American Physical Society
75th Annual Gaseous Electronics Conference
Volume 67, Number 9
Monday–Friday, October 3–7, 2022;
Sendai International Center, Sendai, Japan
The session times in this program are intended for Japan Standard Time zone in Tokyo, Japan (GMT+9)
Session IR5: Plasma Liquid Interaction IV
4:00 PM–6:00 PM,
Thursday, October 6, 2022
Sendai International Center
Room: Sakura 2
Chair: Toshiro Kaneko, Tohoku University
Abstract: IR5.00001 : Production of nanomaterials by pulsed electrical discharges in dielectric liquid
4:00 PM–4:30 PM
Presenter:
Ahmad Hamdan
(Universite de Montreal)
Author:
Ahmad Hamdan
(Universite de Montreal)
In this communication, we will focus on the production of nanomaterials using in-liquid discharges, more particularly those eroding the electrodes in a controlled way. First, we will show that the produced particles are highly sensitive to both, electrode nature and liquid composition. In a second part, we will introduce a novel plasma-liquid system in which a spark discharge is used to generate plasma in a liquid that is in contact with another liquid (combination of type (i) and type (ii) systems). A brief review of the discharge electrical and optical characteristics, we will provide the synthesis conditions, i.e. those leading to a spark discharge between a pin electrode immersed in a dielectric liquid (heptane) and the surface of a conductive solution (water + silver nitrate). This configuration guarantees an interaction between the high-density plasma (spark in liquid heptane) and the solution that contains silver ions, and so, we used it herein to synthesize nanoparticles of Ag. A mechanism of synthesis will be presented.
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