One-pot synthesis of multifunctional magnetic activated carbon from fallen saman leaves to activate persulfate for acid red 18 degradation

• Published in: Chemical Data Collections 2024-12, Vol.54, p.101170, Article 101170
• Main Authors: Nguyen, Hung Minh, Do, Huy Quoc, Tran, Hau Bui Doan, Nguyen, Huy Hoang Ngoc, Nguyen, Thy Tan Tam, Pham, Tuyet Thi, Tran-Thuy, Tuyet-Mai, Nguyen, Long Quang, Nguyen, Dung Van
• Format: Article
• Language: English
• Subjects: Acid red 18; Biomass valorization; Magnetic activated carbon; Persulfate activation; Saman leaf
• ISSN: 2405-8300; 2405-8300
• DOI: 10.1016/j.cdc.2024.101170

•Fallen saman leaves, unnoticed municipal waste, were valorized.•MAC was prepared via one-pot pyrolysis of FeCl3- and ZnCl2-loaded FSL.•MAC exhibited a high SBET of 479 m2/g and a large Vtotal of 0.30 cm3/g.•MAC showed magnetic separability with a MS of 3.71 emu/g.•MAC demonstrated effective PS activation performance for AR18 degradation. Herein, magnetic activated carbon (MAC) was prepared via one-pot pyrolysis of FeCl3- and ZnCl2-loaded fallen saman leaves (FSLs). As a result, different metal-based nanoparticles (Fe(0), FeO, Fe3O4, and ZnO) were identified and evenly distributed within the activated carbon (AC) framework. MAC had a high SBET of 479 m2/g, a large Vtotal of 0.30 cm3/g, and a MS of 3.71 emu/g for magnetic separation. For application, 0.100 g/L MAC activated 2.00 mM persulfate (PS) at initial pH 3.0 to rapidly eliminate 96.5 ± 0.4 % of 50 ppm acid red 18 (AR18) within 60 min. Furthermore, quenching experiments indicated that the MAC+PS system might produce both reactive sulfate (SO4•−) and hydroxyl (•OH) radicals during AR18 treatment. Summarily, the findings highlighted the potential of multifunctional FSL-derived MAC due to its magnetic separability and effective PS activation ability towards AR18 degradation. [Display omitted]