Details

Autor(en) / Beteiligte

• Fan, Yu-Ning
• Zhang, Yun-Qiu
• Gao, San-Shuang
• Bi, Zeng-Hui
• Wang, Yin
• Zhou, Shu-Xing
• Liu, Qian
• Lv, Tian-Ping
• Hu, Guang-Zhi

Titel

Enhanced activation of peroxymonosulfate on layered molybdenum disulfide loaded with Co–La bimetallic oxide for efficient degradation of chloramphenicol

Ist Teil von

• Rare metals, 2024-09, Vol.43 (9), p.4628-4635

Ort / Verlag

Beijing: Nonferrous Metals Society of China

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The use of transition metal-activated peroxymonosulfate (PMS) as an advanced oxidation technology has gained recognition. This study developed a catalyst using cobalt–lanthanum bimetallic oxide supported on layered molybdenum disulfide (MoS 2 ) as a carrier. The Co–La/MoS 2 catalyst was synthesised through coprecipitation, followed by calcination with an optimised metal ratio of Co:La = 2:1 to activate PMS and degrade trace chloramphenicol (CAP) in water. The chemical composition of the catalyst was confirmed using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). At catalyst and PMS dosages of 0.1 and 0.5 g·L −1 , respectively, the degradation rate of CAP was 95% within 30 min. The catalyst exhibited strong resistance to most interfering anions and maintained a high degradation rate at pH 3–11. Liquid chromatography–mass spectrometry analysis revealed the potential degradation pathways of CAP in the Co–La/MoS 2 (2:1)/PMS system. For other pollutants, such as oxytetracycline, complete degradation was achieved within 20 min, demonstrating the broad applicability of the Co–La/MoS 2 (2:1)/PMS system for the degradation and removal of antibiotic organic contaminants. This study offers a feasible approach for the degradation of antibiotic organic pollutants, including CAP, in natural water bodies. Graphical abstract