Simple One-Step Synthesis of Nipa Frond-Derived Magnetic Porous Carbon for Decolorization of Acid Yellow 23

Nguyen, Linh Thi Kim; Nguyen, Long; Nguyen, Hung Minh; Nguyen, Thuan Minh; Lam, Hung Hoa; Tran-Thuy, Tuyet-Mai; Nguyen, Dung Van

doi:10.1155/2023/5447693

Cited by 6 publications

(2 citation statements)

References 75 publications

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“…Thus, KOH played a key role in the generation of Fe 0 . With FeCl 3 -loaded biomass alone, more extreme conditions are needed to form Fe 0 in the carbon base, like a higher pyrolysis temperature or a longer pyrolysis time [51,59].…”

Section: Resultsmentioning

confidence: 99%

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

Nguyen,

Tran,

Nguyen

et al. 2023

Mater. Res. Express

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The current research proposes an innovative strategy for the facile preparation of magnetic activated carbon (MAC) from rosemary distillation residues (RDR). As a magnetic precursor, FeCl3 was impregnated into RDR before KOH was added as an activating agent. One-pot pyrolysis was then conducted to produce zero-valent iron nanoparticles (14.4 wt%) embedded in the activated carbon matrix. Moreover, KOH activation yielded MAC with a large total pore volume of 0.27 cm3/g, a high specific surface area of 458 m2/g, and hierarchical porosity. With a large porous system and different polar functional groups, MAC was subsequently investigated for malachite green (MG) removal in aqueous media. At pH 6.0, MAC eliminated 93.2% MG (50 mg/L) within 120 min. The adsorption process was consistent with the pseudo-second-order kinetic model and the Langmuir isotherm, with a maximum adsorption capacity of 82.6 mg/g. Additionally, MAC demonstrated effective reusability after five consecutive cycles, when MG removal slightly decreased from 96.4±0.6 to 91.8±2.3%. Notably, MAC with a strong saturation magnetization of 18.4 emu/g could be conveniently recovered from treated media through magnetic fields. Overall, rosemary distillation residue-derived magnetic activated carbon can be a potential adsorbent for malachite green remediation thanks to its cost-effectiveness, eco-friendliness, and magnetic separability.

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Section: Resultsmentioning

confidence: 99%

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

Nguyen,

Tran,

Nguyen

et al. 2023

Mater. Res. Express

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“…To accelerate the treatment of organic pollutants by H 2 O 2 , catalysts can be used. As mentioned before, magnetic biochar has proven that it is an effective catalyst for the treatment of synthetic dyes by H 2 O 2 owing to its effectiveness, stability, low cost, and environmental friendliness [ 27 , 59 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Activated Carbon from ZnCl2 and FeCl3 Coactivation of Lotus Seedpod: One-Pot Preparation, Characterization, and Catalytic Activity towards Robust Degradation of Acid Orange 10

Nguyen

Bui

et al. 2023

Bioinorganic Chemistry and Applications

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Lotus seedpods (LSPs) are an abundant and underutilized agricultural residue discarded from lotus seed production. In this study, ZnCl2 and FeCl3 coactivation of LSP for one-pot preparation of magnetic activated carbon (MAC) was explored for the first time. X-ray diffraction (XRD) results showed that Fe3O4, Fe0, and ZnO crystals were formed in the LSP-derived carbon matrix. Notably, transmission electron microscopy (TEM) images showed that the shapes of these components consisted of not only nanoparticles but also nanowires. Fe and Zn contents in MAC determined by atomic absorption spectroscopy (AAS) were 6.89 and 3.94 wt%, respectively. Moreover, SBET and Vtotal of MAC prepared by coactivation with ZnCl2 and FeCl3 were 1080 m2/g and 0.51 cm3/g, which were much higher than those prepared by single activation with FeCl3 (274 m2/g and 0.14 cm3/g) or ZnCl2 (369 m2/g and 0.21 cm3/g). MAC was subsequently applied as an oxidation catalyst for Fenton-like degradation of acid orange 10 (AO10). As a result, 0.20 g/L MAC could partially remove AO10 (100 ppm) with an adsorption capacity of 78.4 mg/g at pH 3.0. When 350 ppm H2O2 was further added, AO10 was decolorized rapidly, nearly complete within 30 min, and 66% of the COD was removed in 120 min. The potent catalytic performance of MAC might come from the synergistic effect of Fe0 and Fe3O4 nanocrystals in the porous carbon support. MAC also demonstrated effective stability and reusability after five consecutive cycles, when total AO10 removal at 20 min of H2O2 addition slightly decreased from 93.9 ± 0.9% to 86.3 ± 0.8% and minimal iron leaching of 1.14 to 1.19 mg/L was detected. Interestingly, the MAC catalyst with a saturation magnetization of 3.6 emu/g was easily separated from the treated mixture for the next cycle. Overall, these findings demonstrate that magnetic activated carbon prepared from ZnCl2 and FeCl3 coactivation of lotus seedpod waste can be a low-cost catalyst for rapid degradation of acid orange 10.

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Simple One-Step Synthesis of Nipa Frond-Derived Magnetic Porous Carbon for Decolorization of Acid Yellow 23

Cited by 6 publications

References 75 publications

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

Magnetic Activated Carbon from ZnCl2 and FeCl3 Coactivation of Lotus Seedpod: One-Pot Preparation, Characterization, and Catalytic Activity towards Robust Degradation of Acid Orange 10

Facile preparation of magnetic activated carbon from Peltophorum pterocarpum flowers for persulfate activation in methyl orange treatment

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