About the Janus double-horn sonicator and its use in quantitative homogenous sonochemistry

Sonochemical synthesis of copper hydride (CuH)

“…Finally, we varied the purging gases from Ar to hydrogen and found that the yield in Ar is 20% higher than that in hydrogen, which should come from the larger polytropic index of Ar and its higher solubility in water. [32][33][34] The former factor results in higher cavitation intensity, while the latter creates more nucleation sites for cavitation. [32][33][34] In summary, we report the sonochemical synthesis of CuH by the ultrasonic irradiation of a Cu 2+ aqueous solution.…”

Ultrasound in Synthetic Organic Chemistry

“…In homogeneous conditions, the measurement of the rate constant also proved to be difficult, because of reproducibility problems. To minimize all this constraints, a new kind of reactor was developed by Reisse et al, a Janus double-horn sonicator [138]. The system consists of two reactors driven by one horn each.…”

A facile method of synthesis of asymmetric hollow silica spheres

“…However, theoretical researches have shown that particles may be anisotropic in shape and/or surface chemistry, which is the so-called asymmetric particles. These asymmetric particles could be very useful in the fields of sonicators [1], molecular imagings [2], molecular recognitions [3], surfactants [4,5], sensors [6], anisotropic imaging probes [7] and so on. Moreover, the asymmetric particles composed of regularly structured aggregates of colloidal nanoparticles, can materialize two-or three-dimensional complex colloidal structures with unique physicochemical properties.…”