In this paper, we report the mild sonochemical synthesis of hexagonal (?) NaYF4:Yb,Er mesocrystals at low temperature 40 °C. The nucleation and transformation crystal structures is investigated in course time, it shown that pure ? phase obtained after 2 h pulsed sonication. crystallization orthorhombic YF3:Yb,Er cubic (?) precedes appearance a thermodynamically stable phase. Based on evolution ...

The ultrasonic conditions of different sonochemical reactors can be tuned to obtain Pt-nanoparticles similar sizes. At low frequencies (20 kHz) Ti/V/Al-contaminants were produced due the probe erosion leading improved kinetics.

The sonochemical decolorization and degradation of azo dye Methyl violet using Fenton’s reagent in the presence of a high-frequency acoustic field has been investigated. Dyeing and textile effluents are the major sources of azo dyes, and are most troublesome among industrial wastewaters, causing imbalance in the eco-system. The effect of various operating conditions (initial concentration of dy...