Sonocatalytic degradation of rhodamine B in presence of CdS

• Published in: Environmental science and pollution research international Vol. 25; no. 11; pp. 10714 - 10719
• Main Authors: Song, Limin, Li, Yamiao, Zhang, Shujuan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2018; Springer Nature B.V
• Subjects: Absorption spectroscopy; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Catalysis; Degradation; Earth and Environmental Science; Ecotoxicology; Electron microscopy; Environment; Environmental Chemistry; Environmental Health; Environmental science; Irradiation; Photoluminescence; Photons; Powders; Research Article; Rhodamine; Rhodamines - chemistry; Spectrum analysis; Substrates; Transmission electron microscopy; Ultrasonic radiation; Ultrasonics; Waste Water Technology; Water - chemistry; Water Management; Water Pollution Control; X ray powder diffraction; X-Ray Diffraction; Chemical synthesis; Catalytic properties; Inorganic compounds
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-018-1369-8

A novel sonocatalyst CdS was prepared by a facile precipitation method, and characterized by X-ray powder diffraction, transmission electron microscopy, UV-vis absorption spectroscopy, and photoluminescence spectroscopy. Comparative sonocatalytic degradation experiments were carried out in different conditions under ultrasonic irradiation and with rhodamine B (RhB) used as the model substrate. Results indicate that CdS is a highly active sonocatalyst. The efficiency of RhB sonodegradation in aqueous solutions within 4 h is up to 70% after the addition of CdS. Abundant •OH during the RhB sonodegradation was detected, which may be responsible for the high sonodegradation rate over CdS under ultrasonic radiation.