Sonochemical Hydrolysis of Ga³⁺ Ions:  Synthesis of Scroll-like Cylindrical Nanoparticles of Gallium Oxide Hydroxide

The sonochemical reaction of an aqueous solution of GaCl 3 led to the formation of gallium oxide hydroxide rolled up in a scroll-like layered structure to give cylinders 80−120 nm in diameter and 500−600 nm in length. Small amounts of metallic Ga were incorporated with these tubes. A mechanism for this reaction has been suggested where the reaction takes place in a shell surrounding the collapsing bubble.