Abstract
Sonication provides a green and sustainable strategy to remove the organic dye pollutants in the environment. In this study, the NH2-MIL-125(Ti) and carbonization derivatives were prepared successfully, aiming to assist the sonochemical removal of organic dyes. By comparison, the NH2-MIL-125(Ti) had a structured cylinder while the carbonization derivatives were irregular in shape, and the NH2-MIL-125(Ti) had much larger specific surface area than the carbonization derivatives, even though the carbonization lowered the band gap. Moreover, the high-resolution XPS spectra showed that the NH2-MIL-125(Ti) had abundant Ti-Ox bonds and vigorous electron transfer, and the PL spectra suggested that the carbonization derivatives with narrow band gap caused the fast recombination of free electrons and holes. According to the observations on the dye removal experiments, the NH2-MIL-125(Ti) showed better catalytic activity under ultrasound irradiation, and the removal rate to Rhodamine B could reach about 80 % within 60 min, even almost 100 % in the presence of peroxydisulfate. Through the qualitative and quantitative analysis, an adsorption/degradation mechanism was proposed and demonstrated for the NH2-MIL-125(Ti)-mediated sonication. Thus, the catalyst-aided sonochemical processes will have attractive application prospect in the removal of industrial organic dyes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
