Degradation mechanism of norfloxacin in water using persulfate activated by BC@nZVI/Ni

Zhu, Fang; Wu, Yuan-Yuan; Liang, Yukun; Li, Haihong; Liang, Wenjing

doi:10.1016/j.cej.2020.124276

Cited by 156 publications

(23 citation statements)

References 54 publications

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“… [10] explored nanoscale zerovalent iron/nickel (GT-nZVI/Ni) prepared by green synthesis technology using green tea extracts and it was applied for uptake of Cr(VI) from groundwater. Biochar-supported nano zero-valent iron/nickel bimetallic composite (BC@nZVI/Ni) was synthesized using liquid phase reduction method and used to activate persulfate (PS) to degrade norfloxacin (NOR) in water [11] . Dada et al.…”

Section: Methods Detailsmentioning

confidence: 99%

Bottom-up approach synthesis of core-shell nanoscale zerovalent iron (CS-nZVI): Physicochemical and spectroscopic characterization with Cu(II) ions adsorption application

et al. 2020

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Section: Methods Detailsmentioning

confidence: 99%

Bottom-up approach synthesis of core-shell nanoscale zerovalent iron (CS-nZVI): Physicochemical and spectroscopic characterization with Cu(II) ions adsorption application

et al. 2020

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“…As shown in the figure, the absorption peak at 705.97 eV is that of zero-valent iron, which proves that zero-valent iron successfully loaded on biochar by the liquid-phase reduction method [ 50 ]. The absorption peaks at 709.51 eV and 723.11 eV are characteristic peaks of Fe 2+ , and those at 711.73 eV and 725.33 eV are characteristic peaks of Fe 3+ [ 51 ]. Among them, the appearance of Fe 2+ and Fe 3+ absorption peaks are caused by the oxidation of the Fe 0 surface in contact with air to form different iron oxides.…”

Section: Resultsmentioning

confidence: 99%

Mechanism of Oxytetracycline Removal by Coconut Shell Biochar Loaded with Nano-Zero-Valent Iron

Zhao

Wang

2021

IJERPH

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In this paper, coconut shell biochar (BC), pickling biochar (HBC), and nano-zero-valent iron-loaded biochar (nZVI-HBC) were prepared; these were used to remove oxytetracycline (OTC), and the removal mechanism and degradation product were analyzed. These biochars were characterized using SEM, XRD, FTIR, and XPS. The effects of biochar addition amount, pH, ion type, and ion concentration on OTC adsorption were studied by a batch adsorption experiment. Under the optimal conditions, the equilibrium adsorption capacity of nZVI-HBC to OTC was 196.70 mg·g−1. The adsorption process can be described by Langmuir isothermal adsorption equations, conforming to the pseudo-second-order dynamics model, indicating that adsorption is dominated by single-molecule chemical adsorption, and a spontaneous process of increasing heat absorption entropy. Mass spectrometry showed that the OTC removal process of nZVI-HBC included not only adsorption but also degradation. These results provide a practical and potentially valuable material for the removal of OTC.

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“…The C-C peak was obviously strong, wh responded to the interactions between the carbon atoms in the carbon nanotubes ure 3d, the peak at 707.16 eV indicated the presence of Fe 0 contained within th material. The peaks at 711.07 eV and 724.43 eV suggested that the nZVI nanopart the surfaces were partially oxidized [52,53]. Figure 3e shows that the peaks at 530.57, 531.80 and 533.56 eV were attributed to Fe-O, Ti-O, C-OH and C=O, resp [54], revealing that the functionalized CNTs with abundant oxygen-containing successfully loaded onto the materials.…”

Section: Synthesis and Characterization Of Nzvi/mxene@cntsmentioning

confidence: 99%

Enhanced Performance of nZVI/MXene@CNTs for Rapid As(III) Removal from Aqueous Solutions

Luo

Wan

et al. 2022

Applied Sciences

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Transition metal compounds demonstrated good performance in the removal of environmentally harmful contaminants, such as arsenic, while the aggregation propensity and poor chemical stability should be noticed. In this study, the nZVI/MXene@CNTs was adequately prepared by liquid reduction precipitation method for adsorption and oxidation of As(III) from the aqueous solution. The results of batch removal experiments showed that the maximum removal capacity of the nZVI/MXene@CNTs for As(III) was 443.32 mg/g with the pH = 3.0 at 25 °C. The effects of initial pH, dosage of materials and ionic strength on As(III) removal were explored. According to the various characterization analyses, the most plausible mechanisms of As(III) removal were the surface complexation, solid phase precipitation and the catalytic oxidation by the •OH. Furthermore, the nZVI/MXene@CNTs could be readily activated and reused via leaching with 0.1 M NaOH solution, due to the three-dimensional mesh intercalation structure. Therefore, it is a potential nanocomplex for removing and recovering As(III) from water with excellent capacity and environmental friendliness.

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Degradation mechanism of norfloxacin in water using persulfate activated by BC@nZVI/Ni

Cited by 156 publications

References 54 publications

Bottom-up approach synthesis of core-shell nanoscale zerovalent iron (CS-nZVI): Physicochemical and spectroscopic characterization with Cu(II) ions adsorption application

Bottom-up approach synthesis of core-shell nanoscale zerovalent iron (CS-nZVI): Physicochemical and spectroscopic characterization with Cu(II) ions adsorption application

Mechanism of Oxytetracycline Removal by Coconut Shell Biochar Loaded with Nano-Zero-Valent Iron

Enhanced Performance of nZVI/MXene@CNTs for Rapid As(III) Removal from Aqueous Solutions

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