Choi, Yunseok Lee, Daein Hong, Sungje Khan, Sovann Darya, Burak Lee, Jae-Young Chung, Jaewon Cho, So-Hye 2024-01-19T17:33:17Z 2024-01-19T17:33:17Z 2021-09-05 2020-05 2073-4344 https://pubs.kist.re.kr/handle/201004/118660 Herein, we report the effect of sonoluminescence and an initial dye concentration on the sonophotocatalysis of TiO2 for the degradation of eosin B, a textile dye. We first investigated the light illuminated during ultrasound irradiation (sonoluminescence) by photographic images, a radical indicator (luminol), and photoluminescence spectra of the detection range of 300-1050 nm. Next, we examined the synergistic effect of sonolysis on photocatalysis by comparing the dye degradation of sonophotocatalysis to that of individual contributions of sonolysis and photocatalysis. Since it was found that the synergist effect is highly engaged with a dye concentration and sonication power, we conducted the comparison test in different concentrations of eosin B (5 and 20 mg/L) and ultrasound powers (35.4, 106.1, and 176.8 W/cm(2)). When the concentration of dyes was low, negative synergistic effects were found at all ultrasound powers, whereas at the high concentration, positive synergistic effects were observed at high ultrasound power. This difference in synergistic effects was explained by the influence of ultrasound on dynamics of dye adsorption on the TiO2 surface. English MDPI WASTE-WATER TREATMENT OXIDATION PROCESSES POLLUTANTS CAVITATION MECHANISMS Investigation of the Synergistic Effect of Sonolysis and Photocatalysis of Titanium Dioxide for Organic Dye Degradation Article 10.3390/catal10050500 1 CATALYSTS, v.10, no.5 CATALYSTS 10 5 scie scopus 000546007000019 2-s2.0-85084996280 Chemistry, Physical Chemistry Article WASTE-WATER TREATMENT OXIDATION PROCESSES POLLUTANTS CAVITATION MECHANISMS sonoluminescence photocatalysis sonolysis sonophotocatalysis titanium dioxide