期刊
ULTRASONICS SONOCHEMISTRY
卷 42, 期 -, 页码 526-531出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultsonch.2017.12.013
关键词
Single-bubble sonoluminescence; Multibubble sonoluminescence; Sonochemiluminescence; Tris-bipyridyl ruthenium(II) complex; Rhodamine B
The sonochemiluminescence spectra of electron-excited ions *[Ru(bpy)(3)](2+) was registered for the first time during sonolysis of argon saturated aqueous solutions of Ru(bpy)(3)Cl-2 with low concentration. At single-bubble sonolysis, the luminescence band of ruthenium is recorded at a concentration of Ru(bpy)(3)Cl-2 from 10(-6) M, and at multibubble from 10(-5) M. Possible mechanisms for the appearance of the band of a tris-bipyridyl ruthenium (II) complex on the background of an structureless continuum of water in the spectra of sonoluminescence are analyzed. Based on the results of the comparison of the sonoluminescence spectra of Ru(bpy)(3)Cl-2 aqueous solutions with the sonoluminescence spectra of aqueous solutions of rhodamine B (which has a high quantum yield of photoluminescence) it was established that a possible mechanism of sonophotoluminescence does not play a decisive role in ruthenium sonoluminescence. The effect of radical acceptors (O-2, C2H5OH, Cd2+, I-) on ruthenium sonoluminescence is analyzed. The most significant mechanism for the formation of electron-excited ions.[Ru(bpy)(3)](2+) during sonolysis is the sonochemiluminescence in oxidation-reduction reactions involving [Ru(bpy)(3)](2+) ions and radical products of sonolysis of water (OH, H, e(aq)(-)) in the solution volume.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据