Issue 5, 2014
From the journal:

Journal of Materials Chemistry A

Ultrasonic cavitation of molten gallium in water: entrapment of organic molecules in gallium microspheres

Vijay Bhooshan Kumar,a   Yuri Koltypin,a   Aharon Gedanken*a  and  Ze'ev Porat*bc  

* Corresponding authors

a Institute of nanotechnology and advanced materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
E-mail: aharon.gedanken@biu.ac.il

b Division of Chemistry, Nuclear Research Center-Negev, P.O. Box 9001, Be'er-Sheva 84190, Israel

c Institutes of applied research, Ben-Gurion University of the Negev, Be'er-Sheva 841051, Israel
E-mail: poratze@post.bgu.ac.il

Abstract

Simultaneous formation of gallium microspheres and entrapment of organic materials within them can be accomplished by applying ultrasonic energy to a heated solution of the organic substance that contains the molten metal. This method was used with aqueous solutions (5–10 mM) of four organic compounds (phenanthroline, Congo Red, crystal violet and rhodamine 6G) at 55 °C, a temperature at which the gallium is molten. Irradiation with ultrasonic energy for ca. 3 min dispersed the molten gallium into microscopic spheres, which were found to contain various amounts of these organic compounds. Immersion of the isolated spheres in pure water results in slow leaching of some of the above compounds.

Graphical abstract: Ultrasonic cavitation of molten gallium in water: entrapment of organic molecules in gallium microspheres

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Article information

DOI
https://doi.org/10.1039/C3TA13573J
Article type
Paper
Submitted
06 Sep 2013
Accepted
11 Nov 2013
First published
11 Nov 2013

J. Mater. Chem. A, 2014,2, 1309-1317

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Ultrasonic cavitation of molten gallium in water: entrapment of organic molecules in gallium microspheres

V. B. Kumar, Y. Koltypin, A. Gedanken and Z. Porat, J. Mater. Chem. A, 2014, 2, 1309 DOI: 10.1039/C3TA13573J

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