Kinetic, isotherm and thermodynamic studies for removal of methyl orange using a novel β-cyclodextrin functionalized graphene oxide-isophorone diisocyanate composites

Yan, Jie; Zhu, Yao; Qiu, Fengxian; Zhao, Hao; Yang, Dongya; Wang, Jie; Wen, Wen-Ya

doi:10.1016/j.cherd.2015.12.023

Cited by 60 publications

(18 citation statements)

References 34 publications

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“…In order to analyze the ions distribution between solution and adsorbents, Langmuir and Freundlich isotherm models were employed to describe the equilibrium date . Langmuir and Freundlich isotherm models are reported in Equations and , respectively.…”

Section: Resultsmentioning

confidence: 99%

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Wang

Yang

et al. 2018

Applied Organom Chemis

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Calixarenes have been drawing tremendous interest due to their special structure, superior properties and numerous applications. In this work, a novel adsorbent material, calix[4]arenes functionalized dual‐imprinted mesoporous film (DIMFs) for the simultaneous selective recovery of Li(I) and Rb(I), was prepared via surface ionic imprinting. Compared with ordinary adsorbent materials, the synthesis process of the films used a cheap bio‐template and did not require extra steps but significantly enhances adsorption properties. The morphology and structure of prepared DIMFs were characterized by scanning electron microscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT‐IR) and nitrogen adsorption–desorption measurements. Adsorption parameters (pH and temperature), adsorption kinetics and adsorption isotherms of the DIMFs were investigated by adsorption experiments. This novel adsorbent has inorganic–organic hybrid frameworks, high specific surface area and uniform pore size. The Langmuir and Freundlich isotherms, pseudo‐first‐order and pseudo‐second‐order kinetics of DIMFs were investigated; suggesting that the adsorption data well fits the Langmuir isotherm model, and the adsorption kinetics can be described by the pseudo‐second‐order kinetic model. In addition, dual‐imprinted mesoporous film exhibited superior selectivity for Li(I) and Rb(I). Cycle test demonstrated an outstanding of reusability, which appreciating their potential for industrial application.

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Section: Resultsmentioning

confidence: 99%

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Wang

Yang

et al. 2018

Applied Organom Chemis

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“…The residue concentration of SA in the supernatants was measured by UV–Vis absorption spectra at 215 nm and calculated based on a standard curve. Eventually, the equilibrium adsorption quantity ( Q e , mg g −1 ) of Fe 3 O 4 @CT‐COOH‐BA and Fe 3 O 4 @CT was calculated by the following equation (Equation ):

Q_{e} = \frac{(C_{o} - C) V}{m}

where Q e (mg g −1 ) is the adsorption quantity of SA; C 0 and C (mg L −1 ) are the initial and equilibrium concentrations of SA, respectively; V (mL) is the volume of the SA solution; m (g) was the mass of the adsorbent.…”

Section: Methodsmentioning

confidence: 97%

Fe₃O₄@chitosan‐bound boric acid composite as pH‐responsive reusable adsorbent for selective recognition and capture of cis‐diol‐containing shikimic acid

Zhu

Rong

Mao

et al. 2019

Applied Organom Chemis

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Recently, shikimic acid (SA) has aroused great concern as the starting raw material for the synthesis of antiviral drug (Tamiflu) against the spread of influenza virus in the body. In this work, magnetic chitosan composite modified with boric acid and its application in SA recognition and separation was described. Chitosan (CT) with plenty of hydroxyl and amino groups was first coated on the surface of magnetic core Fe3O4, then carboxylic groups were grafted to the surface of Fe3O4@CT via anhydride modification, followed by the introduction of 3‐aminophenylboronic acid (APBA). The uniform morphology and composition analysis of the adsorbent (Fe3O4@CT‐COOH‐BA) were characterized by FT‐IR, XRD, XPS, SEM, TEM and UV–visible spectroscopy. The adsorption capacity of as‐prepared material was explored in detail by batch mode experiments. The adsorption kinetics fitted well with a pseudo‐second order model, and the adsorption isotherms was well described by the Langmuir model with a maximum adsorption capacity of 23.8 mg g−1 at 25 °C. Solution pH plays a crucial role in adsorption process and the optimized pH was 8.0. In addition, Fe3O4@CT‐COOH‐BA could be easily reused through an external magnet and the adsorption capacity reduced by only 4% after five adsorption–desorption cycles. These results prove that boric acid modified magnetic chitosan composite is an effective and practical adsorbent for specific recognition and selective adsorption of cis‐diol‐containing compounds.

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“…The spectrum of β-CD exhibited two peaks at 3400 cm -1 and 2922 cm -1 , which are fitted with the stretching vibration of -OH and -CH2-. In addition, two peaks located at 1031 cm -1 and 952 cm -1 are assigned to the antisymmetric glycosidic νa(C-O-C) vibrations and α-1,4-glycosidic bond stretching vibration [18,21], respectively. Compared with β-CD, the infrared spectrum of β-CDPU has apparent changes.…”

Section: Desorption and Reusability Experimentsmentioning

confidence: 99%

Synthesis, Characterization and Antibacterial Activity of Novel β-Cyclodextrin Polyurethane Materials

Chen

Yan

Zhang

et al. 2021

Preprint

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The advanced water treatment taken by organic micro-pollution or microbiological pollution water resource has been a hot issue of public concern. In this article, a novel quaternary ammonium salt functionalized β-cyclodextrin polyurethane (QAS-β-CDPU) was successfully constructed for above-mentioned pollutants removal. By adjusting the proportion of the chlorine-containing monomers, we studied the effect of different quaternization degree (0%, 20%, 40%, 60%) on solvent resistance and thermal stability. Staphylococcus aureus are recognized as significant human bacterial pathogens, which were used as model bacteria to investigate the antibacterial activity by contact-killing tests. Methylene blue (MB) served as a toxic organic model to quantify the dye wastewater remediation efficiency. Research shows that the reaction of β-cyclodextrin and diisocyanate can form a cyclodextrin-based carbamate network structure. Since both the cyclodextrin cavity and the carbamate network may remove the dye, the obtained polymer has a double advantage. Besides, the presence of quaternary ammonium groups enables QAS-β-CDPU to possess good bactericidal properties. When the quaternization degree is 60%, sterilization rate of QAS-β-CDPU comes to 97.3%. On basis of this simple, green and economical synthetic route, QAS-β-CDPU has the potential to become an ideal multifunctional material in water purification.

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Kinetic, isotherm and thermodynamic studies for removal of methyl orange using a novel β-cyclodextrin functionalized graphene oxide-isophorone diisocyanate composites

Cited by 60 publications

References 34 publications

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Fe₃O₄@chitosan‐bound boric acid composite as pH‐responsive reusable adsorbent for selective recognition and capture of cis‐diol‐containing shikimic acid

Synthesis, Characterization and Antibacterial Activity of Novel β-Cyclodextrin Polyurethane Materials

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Kinetic, isotherm and thermodynamic studies for removal of methyl orange using a novel β-cyclodextrin functionalized graphene oxide-isophorone diisocyanate composites

Cited by 60 publications

References 34 publications

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium

Fe3O4@chitosan‐bound boric acid composite as pH‐responsive reusable adsorbent for selective recognition and capture of cis‐diol‐containing shikimic acid

Synthesis, Characterization and Antibacterial Activity of&nbsp;Novel&nbsp;β-Cyclodextrin Polyurethane Materials

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Fe₃O₄@chitosan‐bound boric acid composite as pH‐responsive reusable adsorbent for selective recognition and capture of cis‐diol‐containing shikimic acid

Synthesis, Characterization and Antibacterial Activity of Novel β-Cyclodextrin Polyurethane Materials