Facile synthesis of gallium oxide hydroxide by ultrasonic irradiation of molten gallium in water

Vijay Bhooshan Kumar; Aharon Gedanken; Ze'ev Porat

doi:10.1016/j.ultsonch.2015.03.012

Facile synthesis of gallium oxide hydroxide by ultrasonic irradiation of molten gallium in water

Ultrason Sonochem. 2015 Sep:26:340-344. doi: 10.1016/j.ultsonch.2015.03.012. Epub 2015 Mar 21.

Authors

Vijay Bhooshan Kumar¹, Aharon Gedanken², Ze'ev Porat³

Affiliations

¹ Bar Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel.
² Bar Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel; National Cheng Kung University, Department of Materials Science & Engineering, Tainan 70101, Taiwan. Electronic address: gedanken@mail.biu.ac.il.
³ Division of Chemistry, Nuclear Research Center-Negev, Be'er Sheva 84190, Israel; Institute of Applied Research, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel. Electronic address: poratze@post.bgu.ac.il.

PMID: 25819681
DOI: 10.1016/j.ultsonch.2015.03.012

Abstract

This work describes the single-step synthesis of GaO(OH) by ultrasonic irradiation of molten gallium in warm water. The ultrasonic energy causes dispersion of the liquid gallium into micrometric spheres, as-well-as decomposition of some of the water into H and OH radicals. The OH radicals and the dissolved oxygen react on the surface of the gallium spheres to form crystallites of GaO(OH). These crystallites prevent the re-coalescence of the gallium spheres, and as the reaction proceeds all the gallium is converted into crystalline GaO(OH).

Keywords: Crystallites; GaO(OH); Gallium; Sonosynthesis.