Carbon nanoparticles pillared multi-walled carbon nanotubes for adsorption of 1-naphthol: Thermodynamics, kinetics and isotherms

Wu, Zhiliang; Ye, Hua; Jiao, Feipeng; Liu, Qi; Chen, Xiaoqing; Yu, Jingang

doi:10.1016/j.colsurfa.2015.01.069

Cited by 20 publications

(8 citation statements)

References 55 publications

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“…Also, the data were fitted into the Morris–Weber equation to further assess the real rate-controlling step. The plots revealed that the process of adsorption of these pharmaceuticals are multilinear and does not pass via the origin, indicating that the main controlling step is not intraparticle diffusion . Looking closely, it can be observed that the plot is tri-phasic, signifying that three stages are included in the adsorption process.…”

Section: Resultsmentioning

confidence: 91%

Noncovalent Graphene Oxide Functionalized with Ionic Liquid: Theoretical, Isotherm, Kinetics, and Regeneration Studies on the Adsorption of Pharmaceuticals

Lawal

Akpotu

et al. 2020

Ind. Eng. Chem. Res.

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Sulfamethoxazole (SMZ), carbamazepine (CBZ), and ketoprofen (KET) adsorption using graphene oxide (GO) functionalized with ionic liquids (IL) was investigated. Ionic liquid 1-hexyl 3-decahexyl imidazolium was synthesized and characterized using high resolution-mass spectrometry and nuclear magnetic resonance ( 1 H and 13 C NMR). GO and GO−IL were synthesized and characterized using thermal gravimetric analysis, X-ray diffraction, Raman spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, surface area and porosity analysis, and ζ potentials. Computational, isotherm, kinetics, and regeneration studies were carried out to determine the adsorption capacity, adsorption mechanism, and reusability of the material for the adsorption of SMZ, CBZ, and KET. Density functional theory (DFT) and our own N-layered integrated molecular orbital and molecular mechanics (ONIOM) (quantum mechanics and molecular mechanics) approach were applied to describe the nature of the interaction, energetics, charge distribution, and pH effect during the sorption of the pharmaceutical compounds on the adsorbents at the molecular level. Effects of solution pH, contact time, adsorbent dosage, and energetics on the selected pharmaceuticals were also investigated experimentally. The pH plays a significant role on the adsorption of SMZ and KET but has no significant effect on the adsorption of CBZ on both GO and GO−IL. Pseudo-second-order and Langmuir models best explained the kinetics and adsorption isotherm, respectively. GO−IL showed superior adsorption efficiency for the selected pharmaceuticals when compared to GO.

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Section: Resultsmentioning

confidence: 91%

Noncovalent Graphene Oxide Functionalized with Ionic Liquid: Theoretical, Isotherm, Kinetics, and Regeneration Studies on the Adsorption of Pharmaceuticals

Lawal

Akpotu

et al. 2020

Ind. Eng. Chem. Res.

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“…Lower temperatures were more conducive to the adsorption of CBZ by the MCNTs or MCNTs−PE. With increasing adsorption temperature, the surface tension of the MCNTs decreased, leading to decrease in the adsorption of CBZ on the MCNTs [35]. The negative value of ∆S demonstrated that the distribution of CBZ in aqueous solution was more chaotic.…”

Section: Effect Of Pe On the Adsorption Of Cbz By Mcnt Smentioning

confidence: 99%

The Potential for PE Microplastics to Affect the Removal of Carbamazepine Medical Pollutants from Aqueous Environments by Multiwalled Carbon Nanotubes

Sheng

Wang

Zhang

et al. 2021

Toxics

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Microplastics are ubiquitous in aquatic environments and interact with other kinds of pollutants, which affects the migration, transformation, and fate of those other pollutants. In this study, we employ carbamazepine (CBZ) as the contaminant to study the influence of polyethylene (PE) microplastics on the adsorption of CBZ pollutants by multiwalled carbon nanotubes (MCNTs) in aqueous solution. The adsorption capacity of CBZ by MCNTs in the presence of PE microplastics was obviously lower than that by MCNTs alone. The influencing factors, including the dose of microplastics, pH, and CBZ solution concentration, on the adsorption of CBZ by MCNTs and MCNTs−PE were thoroughly investigated. The adsorption rate of CBZ by MCNTs decreased from 97.4% to 90.6% as the PE microplastics dose increased from 2 g/L to 20 g/L. This decrease occurred because the MCNTs were coated on the surface of the PE microplastics, which further decreased the effective adsorption area of the MCNTs. This research provides a framework for revealing the effect of microplastics on the adsorption of pollutants by carbon materials in aqueous environments.

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“…The values of Q e and k 2 can be calculated from the slopes and intercepts of the pseudo-second order kinetic plots using eqn (5). When t / 0, the initial adsorption rate, h, can be dened as eqn (7). Table 3 summarizes the corresponding model parameters.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…There are a number of separation methods for naphthol removal including biodegradation, photodegradation, wet air oxidation, ozone degradation, adsorption, and other methods. [6][7][8][9] Among these, adsorption has gained more and more attention due to its low-cost, high efficiency, and easy operation. As a result, many adsorbents, such as activated carbon, 10 carbon black, 11 carbon nanotubes (CNTs), 7 graphene, graphene oxide and reduced graphene oxide (RGO), 1,12 bamboo hydrochars, 13 and montmorillonite, 14 have been investigated.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9] Among these, adsorption has gained more and more attention due to its low-cost, high efficiency, and easy operation. As a result, many adsorbents, such as activated carbon, 10 carbon black, 11 carbon nanotubes (CNTs), 7 graphene, graphene oxide and reduced graphene oxide (RGO), 1,12 bamboo hydrochars, 13 and montmorillonite, 14 have been investigated. In recent years, polymeric ionic liquids (PILs) prepared from ionic liquid (IL) monomers combine the unique properties of ILs together with intrinsic polymer characteristics, such as thermal and chemical stability, improved processability, durability, and spatial controllability.…”

Section: Introductionmentioning

confidence: 99%

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Co-immobilization of 1-vinyl-3-octadecylimidazolium cations and p-styrenesulphonate anions on silica and their anti-interference performance for the adsorption of naphthols

Wang

Chen

et al. 2017

RSC Adv.

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Carbon nanoparticles pillared multi-walled carbon nanotubes for adsorption of 1-naphthol: Thermodynamics, kinetics and isotherms

Cited by 20 publications

References 55 publications

Noncovalent Graphene Oxide Functionalized with Ionic Liquid: Theoretical, Isotherm, Kinetics, and Regeneration Studies on the Adsorption of Pharmaceuticals

Noncovalent Graphene Oxide Functionalized with Ionic Liquid: Theoretical, Isotherm, Kinetics, and Regeneration Studies on the Adsorption of Pharmaceuticals

The Potential for PE Microplastics to Affect the Removal of Carbamazepine Medical Pollutants from Aqueous Environments by Multiwalled Carbon Nanotubes

Co-immobilization of 1-vinyl-3-octadecylimidazolium cations and p-styrenesulphonate anions on silica and their anti-interference performance for the adsorption of naphthols

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