Monolayer Adsorption of Ciprofloxacin on Magnetic Inulin/Mg–Zn–Al Layered Double Hydroxide: Advanced Interpretation of the Adsorption Process

Raheem, Abdur; Rahman, Nafisur; Khan, Saimeen

doi:10.1021/acs.langmuir.4c00526

Cited by 6 publications

(1 citation statement)

References 69 publications

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“…Targeting at high adsorption capacity and environmental friendliness, many natural polymeric materials and their derivatives, such as chitosan, starch, sodium alginate, and cellulose, are regarded as potential adsorbents since their abundant hydroxyl, carboxyl, and amino groups permit high affinities to metal cations . Syeda and Yap has summarized that cellulose has a wide range of applications in the removal of heavy metals, antibiotics, and dyes from various wastewaters .…”

Section: Introductionmentioning

confidence: 99%

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu²⁺ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Yan,

Gu,

et al. 2024

Langmuir

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In order to address the issue of protonation of functional groups and structural instability on the surface of aerogel due to strong acidic wastewater, a three-dimensional bis-pyridine N cellulose aerogel [PEIPD/carboxymethyl cellulose (CMC)] with protonation resistance was prepared in this paper by grafting pyridine onto polyethylenimine. The adsorption capacity for Cu 2+ of the as-prepared aerogel is as high as 1.64 mmol/g (pH 5) and is maintained well in high-acidity solutions (1.15 mmol/g at pH = 2). It reveals high selectivity, splendid anti-interference ability, and also reliable on the recycle performance. Through the zeta potential tests, this adsorbent reveals a rather low zero charge point (pH pzc = 2.2). The adsorption of Cu 2+ on the adsorbent is consistent with the pseudo-second-order kinetic model and the Langmuir model, suggesting that the adsorption process is dominated by chemisorption in a monolayer. The characterizations by Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy proved pyridine N as responsible binding sites, based on which two possible mechanisms are proposed, including chelation and cation−π interaction. Density functional theory calculations are further used to precisely investigate the pathway. By comparing the binding energies, molecular electrostatic potentials, electron densities, and differential charge densities, the bispyridine N functional group is finally determined to be of much higher affinity to Cu 2+ following chelation reaction as designated. By integrating bis-pyridine N with the CMC and understanding their crucial roles, this will provide significant insights into the rational design of aerogel adsorbents to enhance the recovery of Cu from strongly acidic wastewaters.

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Section: Introductionmentioning

confidence: 99%

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu²⁺ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Yan,

Gu,

et al. 2024

Langmuir

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Carboxylic acid-based fuel mediated sustainable one-pot fabrication of CaFe2O4 with enhanced adsorptive elimination of hazardous dye

Patil,

Grewal

2025

Inorganic Chemistry Communications

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The resistance mechanism of humic acids and proteins in soluble microbial products from activated sludge against silver nanoparticles

Kang,

Wang,

Zhang

et al. 2024

Journal of Environmental Chemical Engineering

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Monolayer Adsorption of Ciprofloxacin on Magnetic Inulin/Mg–Zn–Al Layered Double Hydroxide: Advanced Interpretation of the Adsorption Process

Cited by 6 publications

References 69 publications

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu²⁺ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu²⁺ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Carboxylic acid-based fuel mediated sustainable one-pot fabrication of CaFe2O4 with enhanced adsorptive elimination of hazardous dye

The resistance mechanism of humic acids and proteins in soluble microbial products from activated sludge against silver nanoparticles

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Monolayer Adsorption of Ciprofloxacin on Magnetic Inulin/Mg–Zn–Al Layered Double Hydroxide: Advanced Interpretation of the Adsorption Process

Cited by 6 publications

References 69 publications

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu2+ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu2+ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Carboxylic acid-based fuel mediated sustainable one-pot fabrication of CaFe2O4 with enhanced adsorptive elimination of hazardous dye

The resistance mechanism of humic acids and proteins in soluble microbial products from activated sludge against silver nanoparticles

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Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu²⁺ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment

Engineering Bis-Pyridine N-Functionalized Cellulose Aerogel for Efficient Extraction of Cu²⁺ from High-Acidity Wastewaters: Coupling Molecular Scale Interpretation with Experiment