Highly Efficient Ultrasound-Driven Ti3+-Doped TiO2with Oxygen Vacancies: A Promising Visible-Light Catalyst for Complete Sonophotocatalytic Degradation of Tetracycline

Autor: Jeyaprakash, Jenson Samraj, Rajamani, Manju, Mani, Preeyanghaa, Yazhini, Crescentia, Sonawane, Shirish H., Neppolian, Bernaurdshaw
Zdroj: Industrial & Engineering Chemistry Research; 20240101, Issue: Preprints
Abstrakt: Tetracycline (TC), a widely prescribed antibiotic to treat bacterial infections in humans and animals, poses a substantial threat to the environment due to its extensive use. To address this issue, a TiO2-based photocatalyst was employed for the effective sonophotocatalytic degradation of TC. The ultrasound-driven TiO2synthesis induced oxygen vacancies and Ti3+species, enhancing the sonophotocatalytic efficiency. The formation of Ti3+and oxygen vacancies was confirmed by using various analytical techniques. The synthesized TiO2with ultrasound (TiO2US) demonstrates remarkable TC degradation under halogen lamp irradiation, achieving an efficiency of ∼96%, 1.56 times higher than that of TiO2synthesized without ultrasound (TiO2WUS). Under diffuse sunlight, TiO2US and TiO2WUS exhibit degradation efficiencies of 95 and 79%, respectively. Notably, TiO2US effectively degraded the hospital effluent, achieving 83% degradation efficiency. This nanophotocatalyst displays appreciable reusability and stability, offering a promising solution for efficiently degrading persistent emerging contaminants.
Databáze: Supplemental Index