Synthesis of surface Cr (VI)-imprinted magnetic nanoparticles for selective dispersive solid-phase extraction and determination of Cr (VI) in water samples

A facile, mild method for the preparation of teicoplanin (TE) modified Fe O microparticles (MPs) employing polydopamine (PDA) layer as a versatile secondary reaction platform was developed. The synthesized magnetic MPs (Fe O @PDA@TE) were characterized by various characterization techniques, such as TEM, zeta potential etc, to affirm the successful modification of TE to magnetic Fe O MPs. Using the as-synthesized materials as chiral adsorbents, efficient chiral separation of representative racemic compounds was successfully achieved. Due to the magnetic responsivity, the materials were easily isolated from the racemic solutions under an external magnetic field and could be readily reused for at least three times. Thus, the well-prepared functional magnetic MPs have great potential in preparative chiral separation.

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“…As is well known, the adsorption equilibrium time is considered to be an important factor in the adsorption process . Experimental data (Fig.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis and application of teicoplanin‐modified magnetic microparticles for enantioseparation

et al. 2017

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“…The peak at 1383 cm −1 is likely caused by the bending vibration of C-H [31]. The peak at 1090 cm −1 is attributed to the anti-symmetrical stretching vibration of Si-O-Si [32]. The peaks at 796, 690, and 468 cm −1 are the result of bending vibration by Si-O [30,33].…”

Section: Desorption and Regeneration Studiesmentioning

confidence: 95%

Adsorption of As(V) from Aqueous Solution on Chitosan-Modified Diatomite

Yang

Gong

Huang

et al. 2020

IJERPH

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A novel chitosan (CS)-modified diatomite (Dt) was prepared by a simple mixture in the mass ratio to remove As(V) from aqueous solution in this research. The CS-modified Dt adsorbent was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD) analysis. The parameters to influence the adsorption of As(V) ion were studied under such conditions as kinetics, adsorption isotherm, and pH effect. The results revealed that adsorption of As(V) was initially rapid and the equilibrium time was reached after 40 min. The optimal value of the pH was 5.0 for better adsorption. The equilibrium data were well fitted to the Langmuir isotherm compared to the Freundlich isotherm, and exhibited the highest capacity and removal efficiency of 94.3% under an initial As(V) concentration of 5 mg/L. The kinetic data were well described by the pseudo-second-order model. In addition, 0.1 M NaOH has the best desorption efficiency of As(V) adsorbed on CS-modified Dt, and the removal efficiency of As(V) was still higher than 90% when after six adsorption-desorption cycles. These results showed that the CS-modified Dt could be considered as a potential adsorbent for the removal of As(V) in aqueous solution.

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“…MIPs prepared by conventional methods exhibit high specic selectivity, strong stability and wide utilizations in chromatographic separation, solid phase extraction, simulated enzyme catalysis and membrane separation. [21][22][23][24][25] At present, the preparation of intelligent molecular imprinting sensors for electrochemical sensing is an innovative frontier in MIP material science, and combining the specic recognition performance of MIPs with the detection sensitivity of electrochemical sensors has become an active eld in new sensor research.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of switchable intelligent molecularly imprinted polymers with selective adsorption of ethyl carbamate and their application in electrochemical sensor analysis

et al. 2018

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Synthesis of surface Cr (VI)-imprinted magnetic nanoparticles for selective dispersive solid-phase extraction and determination of Cr (VI) in water samples

Cited by 96 publications

References 33 publications

Facile synthesis and application of teicoplanin‐modified magnetic microparticles for enantioseparation

Facile synthesis and application of teicoplanin‐modified magnetic microparticles for enantioseparation

Adsorption of As(V) from Aqueous Solution on Chitosan-Modified Diatomite

Synthesis of switchable intelligent molecularly imprinted polymers with selective adsorption of ethyl carbamate and their application in electrochemical sensor analysis

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