Facile synthesis of porous carbon sheets from potassium acetate via in-situ template and self-activation for highly efficient chloramphenicol removal

Dai, Jiangdong; Tian, Sujun; Jiang, Yinhua; Chang, Zhongshuai; Xie, Atian; Zhang, Ruilong; Yan, Yongsheng

doi:10.1016/j.jallcom.2017.10.237

Cited by 53 publications

(27 citation statements)

References 56 publications

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“…[26] However, its disadvantages include the washing step and the corrosiveness of the process. [27,28] The main factors affecting chemical activation include the type of activating agent, mixing method, the mass ratio of activating agent to carbon precursor, and heating method. [29] The chemical and physical properties of activated carbon strongly depend on process parameters, including the type of precursor, the activation process, carbonization time and temperature, impregnation ratio, impregnation method, carbonization time, and the activating agent.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl₂ activation

Benmahdi

Oulmi

Khettaf

et al. 2021

Fullerenes, Nanotubes and Carbon Nanostructures

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Granular activated carbon (GAC) was synthesized from Silver berry (Elaeagnus Angustifolia L.) seeds using zinc chloride as the activation agent. To optimize the operating parameters, the effects of the time and temperature of carbonization, impregnation ratio, and heating rate on the iodine number and yield of activated carbon were studied. Optimized parameters were impregnation ratio of 1:1, carbonization temperature of 500 °C, carbonization time of 1 hour, and heating rate of 5 °C/min. The GAC synthesized under optimized conditions was characterized by Nitrogen adsorption-desorption isotherms, SEM, EDX, XRD, FT-IR, Boehm titration, TG-TGA, and TG-IR. It was found that the synthesized GAC has a microporous structure with a BET surface area of 1109 m 2 /g, a micropores volume of 0.317 cm 3 /g, and an average pore diameter of 2.1 nm. The methylene blue (MB) dye was employed as a molecule model to evaluate the porosity and the adsorption capacity of the synthesized GAC. The results showed that the maximum adsorption capacity of MB and the percent portion of the surface area (S MB /S BET ) were 120.48 mg/g and 30.62%, respectively. The experimental results reveal that the synthesized GAC can be used as a low-cost adsorbent for the removal of small and large environmental pollutants.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl₂ activation

Benmahdi

Oulmi

Khettaf

et al. 2021

Fullerenes, Nanotubes and Carbon Nanostructures

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“…Thus, novel techniques are urgently needed for efficient CAP removal. There have been some techniques applied for CAP removal from aqueous solution, such as adsorption [11][12][13][14][15], nano materials [16][17][18][19], electrochemistry [20,21], and advanced oxidation processes [8]. Among them, persulfate (PS) has, in recent years, attracted great attention as an alternative to H2O2 for advanced oxidation processes due to its high redox potential (2.5 V-3.1 V) and longer lifetime than • OH [22][23][24].…”

Section: Methodsmentioning

confidence: 99%

“…Fe 2+ + 2H2O↔FeOOH(s) + 3H + (13) 8FeOOH(s) + Fe 0 →3Fe3O4(s) + 4H2O (14) 2Fe(OH)3(s)→α − Fe2O3 + 3H2O (15) 2α − FeOOH(s)+→α − Fe2O3 + H2O (16)…”

Section: Fe-speciation Analysisunclassified

Hydrothermal Enhanced Nanoscale Zero-Valent Iron Activated Peroxydisulfate Oxidation of Chloramphenicol in Aqueous Solutions: Fe-Speciation Analysis and Modeling Optimization

Yang

Xue

et al. 2019

Water

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The efficiencies of the nanoscale zero-valent iron (nZVI) and hydrothermal and nZVI-heat activation of peroxydisulfate (PS) were studied for the decomposition of chloramphenicol (CAP) in aqueous solutions. The nZVI heat combined with activation of PS provided a significant synergistic effect. A central composite design (CCD) with response surface methodology (RSM) was employed to explore the influences of single parameter and interactions of selected variables (initial pH, PS concentration, nZVI and temperature) on degradation rates with the purpose of condition optimization. A quadratic model was established based on the experimental results with excellent correlation coefficients of 0.9908 and 0.9823 for R2 and R2adj. The optimized experimental condition for 97.12% CAP removal was predicted with the quadratic model as 15 mg/L, 0.5 mmol/L, 7.08 and 70 °C for nZVI dosage, PS, initial pH, and temperature, respectively. This study demonstrated the effectiveness of RSM for the modeling and prediction of CAP removal processes. In the optimal condition, Fe2O3 and Fe3O4 were the predominant solid products after reactions based on X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis, which could also act as the activators along with the reaction. Overall, it could be concluded that hydrothermal enhanced nZVI activation of PS was a promising and efficient choice for CAP degradation.

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“…As discussed, this method is not considered selfactivation due to the use of inert gases and templates during the process. [46][47][48] The present work proposed a green, low-cost and facile method to prepare green porous carbon with mesoporedominant from walnut-shell as precursors using a one-step self-activating system. The proposed approach is based on a closed-loop carbonization system that uses gases decomposition from biomass as the reagent.…”

Section: Introductionmentioning

confidence: 99%

Biomass derived hierarchical porous carbon for high-performance O₂/N₂ adsorption; a new green self-activation approach

et al. 2021

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Facile synthesis of porous carbon sheets from potassium acetate via in-situ template and self-activation for highly efficient chloramphenicol removal

Cited by 53 publications

References 56 publications

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl₂ activation

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl₂ activation

Hydrothermal Enhanced Nanoscale Zero-Valent Iron Activated Peroxydisulfate Oxidation of Chloramphenicol in Aqueous Solutions: Fe-Speciation Analysis and Modeling Optimization

Biomass derived hierarchical porous carbon for high-performance O₂/N₂ adsorption; a new green self-activation approach

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Facile synthesis of porous carbon sheets from potassium acetate via in-situ template and self-activation for highly efficient chloramphenicol removal

Cited by 53 publications

References 56 publications

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl2 activation

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl2 activation

Hydrothermal Enhanced Nanoscale Zero-Valent Iron Activated Peroxydisulfate Oxidation of Chloramphenicol in Aqueous Solutions: Fe-Speciation Analysis and Modeling Optimization

Biomass derived hierarchical porous carbon for high-performance O2/N2 adsorption; a new green self-activation approach

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Product

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Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl₂ activation

Synthesis and characterization of microporous granular activated carbon from Silver berry seeds using ZnCl₂ activation

Biomass derived hierarchical porous carbon for high-performance O₂/N₂ adsorption; a new green self-activation approach