Selective Adsorption of Dibenzothiophene Using Magnetic Molecularly Imprinted Polymers

Huang, Weihong; Li, Hui; Xu, Wei; Zhou, Wei; Zhou, Zhiping

doi:10.1260/0263-6174.30.4.331

Cited by 19 publications

(4 citation statements)

References 34 publications

(15 reference statements)

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“…We obtained the following results from the data in Table : The values of K d and k of SiO 2 @MIP outclassed those of SiO 2 @NIP; this indicated that SiO 2 @MIP had the best selectivity toward DBT. The values of k ′ for the analogs increased in rank order from 4‐MDBT (4.8008) < BT (5.6397) < 4,6‐DMDBT (6.1928). Compared with other studies, , the binding selectivity of SiO 2 @MIP toward DBT was significantly enhanced. …”

Section: Resultscontrasting

confidence: 54%

“…Conventional desulfurization technologies, such as hydrodesulfurization, oxidative desulfurization, catalyst desulfurization, and biological desulfurization, have not satisfied refineries’ requirements in the deep desulfurization field . Our research group has developed several adsorbents with high recognition selectivity and binding affinity to dibenzothiophene (DBT) over structure analogs, and batch adsorption studies were carried out to investigate their adsorption behaviors . For instance, a computational simulation method was introduced to simulate the interactions between DBT and FMs in the prepolymerization mixture.…”

Section: Introductionmentioning

confidence: 99%

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Rational design and preparation of dibenzothiophene‐targeting molecularly imprinted polymers with molecular dynamics approaches and surface‐initiated activators regenerated by electron‐transfer atom‐transfer radical polymerization

Qiu

Zhou

Yan

et al. 2015

J of Applied Polymer Sci

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Nine molecular dynamic simulations of molecular-imprinting prepolymerization systems were performed to investigate the effects of the type and concentration of crosslinkers (CLs) on key template (T)-functional monomer (FM) complexes. Subsequent analyses revealed that the system with divinylbenzene as the CL had the most stable T-FM complexes, and the mass percentage concentration of divinylbenzene in the prepolymerization system was 9.4%. Nine corresponding imprinted polymers were synthesized by the coupling of the surface-initiated activator regenerated by electron-transfer atom-transfer radical polymerization technique with the hierarchicalimprinting technique to validate the reliability of the simulation results. The structural properties of the optimal adsorbent were characterized by IR spectrophotometry, scanning electron microscopy, and nitrogen sorption measurements. The Langmuir isotherm fitted the equilibrium data best, and the kinetic data (within 30 min) were well described by the pseudo-second-order model. Meanwhile, the prepared adsorbent displayed a higher selectivity to dibenzothiophene compared with other analogs. Finally, the adsorbent was successfully applied for the deep desulfurization of the gasoline sample.

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Section: Resultscontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Rational design and preparation of dibenzothiophene‐targeting molecularly imprinted polymers with molecular dynamics approaches and surface‐initiated activators regenerated by electron‐transfer atom‐transfer radical polymerization

Qiu

Zhou

Yan

et al. 2015

J of Applied Polymer Sci

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“…The more the meropenem molecules adsorbed onto the MeIP surface, the more solvent molecules surrounded meropenem molecules. Thus, the degree of freedom to meropenem molecules was decreased [29]. A negative value of ∆S° suggested that there was low-binding randomness at the solid-solution interface [28].…”

Section: Thermodynamics Of Adsorptionmentioning

confidence: 98%

Selective Solid-Phase Extraction of Meropenem from Human Blood Plasma Using a Molecularly Imprinted Polymer

et al. 2021

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This study employed a selective and high adsorption performance for meropenem. Molecularly imprinted polymer for meropenem (MeIP) as the selective sorbent was prepared through a bulk polymerization reaction. Methacrylic acid, ethylene glycol dimethacrylate, benzoyl peroxide, and dimethyl sulfoxide were applied as functional monomer, crosslinker agent, initiator, and solvent, respectively. Scanning electron microscopy, thermogravimetric analysis, Brunauer-Emmett-Teller analysis, and Fourier transform infrared spectroscopy were used to characterize the morphology, pore size, and structure of imprinted polymers. The maximum adsorption capacity was achieved at pH = 3, after 4 h contacted, under 150 rpm, and 25 mg of polymer applied. The maximum adsorption capacity of MeIP for meropenem was 51.963 mg/L; the synthesized polymer had superior selectivity to meropenem compared to that of the other antibiotics (imprinting factor, IF = 2.58). Furthermore, the thermodynamic and kinetic analyses indicated that the results were in accord with the Freundlich model and the pseudo-second-order kinetic model, respectively. MeIP was selective in batch adsorption, and molecularly imprinted solid-phase extraction protocols were selective to meropenem. It was then applied to analyze meropenem in human blood plasma and resulted in 78.52 ± 2.71 of recovery.

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“…Clearly, the shapes of the adsorption isotherms are hyperbolic for DCF on the PANI-coated fabric as well as SA on the PPY-coated fabric. To predict the adsorption behavior, the most applied adsorption isotherm models (Equations ( 7) and ( 8)) were examined [42].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Polypyrrole- and Polyaniline-Coated Cotton Fabrics as Efficient Adsorbents for the Pharmaceutical Water Contaminants Diclofenac and Salicylic Acid

Farghal,

Tawakey,

Amer

et al. 2023

Polymers

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The emerging pharmaceutical contaminants diclofenac (DCF) and salicylic acid (SA) pose potential hazards to humans and living organisms due to their persistence in water environments. In this work, the conductive polymers polypyrrole (PPY) and polyaniline (PANI) were successfully coated on cotton fabrics, as confirmed by FTIR and SEM measurements. The coated fabrics efficiently removed DCF at pH 5.3 and SA at pH 4, with removal efficiencies that exceeded 90% and 70%, respectively. Adsorption was rapid for most of the tested contaminant–fabric systems and reached equilibrium within 20–30 min. The best adsorption performance for both contaminants was shown on the PPY-coated fabrics, which yielded adsorption capacities of about 65 and 21 mg/g for DCF and SA, respectively. This could be explained by molecular modeling simulations, which mostly estimated higher total cohesive energy densities for adsorption on the PPY-coated fabrics than on the PANI-coated ones. The adsorption mechanism involved both coulombic electrostatic attractions and non-coulombic van der Waals and π-π stacking. The fabrics could be reused for three adsorption–desorption cycles. Immobilization of the conductive polymers on cotton fabrics provides a facile method for their handling and collection during adsorption and regeneration cycles while maintaining their multi-functionality in adsorbing different contaminants.

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Selective Adsorption of Dibenzothiophene Using Magnetic Molecularly Imprinted Polymers

Cited by 19 publications

References 34 publications

Rational design and preparation of dibenzothiophene‐targeting molecularly imprinted polymers with molecular dynamics approaches and surface‐initiated activators regenerated by electron‐transfer atom‐transfer radical polymerization

Rational design and preparation of dibenzothiophene‐targeting molecularly imprinted polymers with molecular dynamics approaches and surface‐initiated activators regenerated by electron‐transfer atom‐transfer radical polymerization

Selective Solid-Phase Extraction of Meropenem from Human Blood Plasma Using a Molecularly Imprinted Polymer

Polypyrrole- and Polyaniline-Coated Cotton Fabrics as Efficient Adsorbents for the Pharmaceutical Water Contaminants Diclofenac and Salicylic Acid

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