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

IF 2.218 Q2 Chemistry Chemical Data Collections Pub Date : 2024-10-29 DOI:10.1016/j.cdc.2024.101170

Hung Minh Nguyen , Huy Quoc Do , Hau Bui Doan Tran , Huy Hoang Ngoc Nguyen , Thy Tan Tam Nguyen , Tuyet Thi Pham , Tuyet-Mai Tran-Thuy , Long Quang Nguyen , Dung Van Nguyen

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Abstract

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 S_BET of 479 m²/g, a large V_total of 0.30 cm³/g, and a M_S 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.

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利用落叶合成多功能磁性活性炭，以活化过硫酸盐降解酸性红 18

在这里，磁性活性炭（MAC）是通过一锅热解含FeCl3和ZnCl2的落叶松（FSLs）制备的。结果发现了不同的金属基纳米颗粒（Fe(0)、FeO、Fe3O4 和 ZnO），并均匀地分布在活性炭（AC）框架中。MAC 的 SBET 高达 479 m2/g，Vtotal 大至 0.30 cm3/g，磁分离 MS 为 3.71 emu/g。在应用中，0.100 g/L MAC 可激活初始 pH 值为 3.0 的 2.00 mM 过硫酸盐（PS），在 60 分钟内快速消除 96.5 ± 0.4 % 的 50 ppm 酸性红 18（AR18）。此外，淬灭实验表明，在处理 AR18 的过程中，MAC+PS 系统可能会产生活性硫酸根 (SO4--) 和羟基 (-OH) 自由基。总之，这些研究结果凸显了多功能 FSL 衍生 MAC 的潜力，因为它具有磁性分离性和有效的 PS 激活能力，可用于降解 AR18。

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来源期刊

Chemical Data Collections Chemistry-Chemistry (all)

CiteScore

6.10

自引率

0.00%

发文量

169

审稿时长

24 days

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