Journal
ULTRASONICS SONOCHEMISTRY
Volume 68, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2020.105186
Keywords
Electro-Fenton process; Metanil Yellow; Decolorization; Tin(II) sulfide; Tin(IV) sulfide; Sonochemistry
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SnS and SnS2 powders were synthesized with the use of ultrasound. The indirect sonication was applied with ultrasound frequency 40 kHz and acoustic power 38 W/L. Products of syntheses were examined with PXRD, TEM, EDX, XPS, and UV-Vis (the Tauc method) investigations. The resulting microparticles were used for tip coating of copper cathodes. These electrodes were used in the degradation of model azo-dye Metanil Yellow by the electro-Fenton process. The efficiencies of degradation using copper, SnS-coated copper, and SnS2-coated copper cathodes are compared. Kinetics of degradation of Metanil Yellow in the electro-Fenton process with the application of three different cathodes is also investigated. It was found that the degradation follows pseudofirst-order and that SnS-coated copper cathode improves the efficiency of degradation, while SnS2-coated copper cathode decreases the efficiency of degradation.
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