Z-scheme CeO2/Ag/CdS heterojunctions functionalized cotton fibers as highly recyclable and efficient visible light-driven photocatalysts for the degradation of dyes. (20th December 2022)

• Record Type: Journal Article
• Authors: Wang, Yafang; Yang, Lin; Zou, Rui; Lan, Jianwu; Yao, Anrong; Xiao, Hongyan; Lin, Shaojian
• Is Part Of: Journal of cleaner production. Volume 380:Part 1(2022)
• Publication Date: 2022-12-20
• Subjects: CeO2/Ag/CdS -- Photocatalytic degradation -- Dyes -- Cotton fiber -- Recyclability; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2022.135012
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: High-performance photocatalysts with excellent recyclability are viewed as promising materials for dye-contaminated wastewater remediation. In this work, novel Z-scheme CeO2 /Ag/CdS ternary heterojunction composites were successfully prepared, which exhibited high photocatalytic activity for efficient visible light-driven degradation of organic dyes, due to the effective charge transfer at the interface of the formed Z-scheme ternary heterojunction. Further, to endow photocatalysts with the facile recyclable feature, the CeO2 /Ag/CdS heterojunctions functionalized cotton fibers (CeO2 /Ag/CdS-CF) were fabricated based on the "active ester-amino" chemical reaction via utilization of pentafluorophenyl esters. The results presented that the as-prepared CeO2 /Ag/CdS-CF had superior photocatalytic activity towards dyes, which could remove 89.4% of methylene blue (MB) under visible-light irradiation for 180 min. Additionally, the CeO2 /Ag/CdS-CF showed outstanding recyclability and long-term stability with the MB degradation efficiency remaining above 82.3% even after 5 successive cycles. Overall, this work not only provides a highly visible light active CeO2 /Ag/CdS-CF system for dye wastewater treatment but also contributes to developing a versatile method to prepare facile recyclable photocatalysts. Graphical abstract: Image 1 Highlights: The novel Z-scheme heterojunction photocatalyst CeO2 /Ag/CdS was prepared. A versatile method was employed to anchor CeO2 /Ag/CdS on the cotton fibers. CeO2 /Ag/CdS-CF presented high visible light activity for photo-degradation of dyes. CeO2 /Ag/CdS-CF exhibited facile recyclability and outstanding reusability.