Selective adsorption and separation of BPA from aqueous solution using novel molecularly imprinted polymers based on kaolinite/Fe3O4 composites

Guo, Wei; Hu, Wei; Pan, Jianming; Zhou, Hao; Guan, Wei; Wang, Xue; Dai, Jiangdong; Xu, Longcheng

doi:10.1016/j.cej.2011.04.036

Cited by 197 publications

(41 citation statements)

References 41 publications

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“…Recently, surface imprinting by sol-gel process has been successfully applied for the imprinted coating on silica gel [22,23], multi-wall carbon nanotubes [24] and magnetic particles [10][11][12][13][14][19][20][21]. However, the limited functional silica monomers restrict the development of surface imprinting by sol-gel process.…”

Section: Introductionmentioning

confidence: 99%

“…However, the traditional coating of Fe 3 O 4 particles cannot separate analytes efficiently from the complex biological or environmental samples. Fortunately, a method combining Fe 3 O 4 particles with molecularly imprinted polymer (Fe 3 O 4 @MIP) for extracting analytes from complex samples was developed [10][11][12][13][14]. MIP is a synthetic material which can selectively recognize the template molecule from related analogous compounds, and have been investigated as highly selective sorbents for SPE to concentrate and clean up samples prior to analysis [15,16].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of core–shell magnetic ion-imprinted polymer for selective extraction of Pb(II) from environmental samples

Zhang

Liu

et al. 2011

Chemical Engineering Journal

135

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a b s t r a c tA novel magnetic ion-imprinted polymer (Fe 3 O 4 @SiO 2 @IIP) was synthesized by using 3-(2-aminoethylamino)propyltrimethoxysilane (AAPTS) as the functional monomer, tetraethylorthosilicate (TEOS) as the cross-linker and Pb(II) as the template and evaluated for selective extraction of Pb(II) from environmental sample by magnetic solid phase extraction (M-SPE) procedure. The factors affecting separation and preconcentration of the target heavy metals involving pH, eluting solvent and sample volume were studied in detail. Under the optimized experimental conditions, the kinetics adsorption and adsorption capacity of the Fe 3 O 4 @SiO 2 @IIP toward Pb(II) were estimated. The results indicated that the adsorption mechanism is corresponding with the second-order adsorption process with correlation coefficient (r 2 = 0.990), and the maximum adsorption capacity is 19.61 mg g −1 . The relative selectivity factor (ˇ) values of Pb(II)/Cu(II), Pb(II)/Zn(II), Pb(II)/Cd(II) and Pb(II)/Hg(II) are 7. 41, 6.76, 3.75 and 6.39, respectively. The Fe 3 O 4 @SiO 2 @IIP was applied for extracting and detecting of Pb(II) in real environmental samples combined with atomic adsorption spectrometer successfully with high recoveries of 98.0%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of core–shell magnetic ion-imprinted polymer for selective extraction of Pb(II) from environmental samples

Zhang

Liu

et al. 2011

Chemical Engineering Journal

135

View full text Add to dashboard Cite

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“…[8][9][10] CDs are glucosebased molecules, produced from the enzymatic degradation of starch by bacteria. They are cyclic oligosaccharides, consisting of six (a), seven (b), and eight (c) glucopyranose units, which are joined together by a-(1,4)-glycosidic linkage bonds, forming a torusshaped ring structure.…”

Section: Introductionmentioning

confidence: 99%

Influence of polymer morphology on the adsorption behaviors of molecularly imprinted polymer‐methacrylic acid functionalized β‐cyclodextrin

Asman

Mohamad

Sarih

2015

J of Applied Polymer Sci

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The influence of molecularly imprinted polymer-methacrylic acid functionalized b-cyclodextrin (MIP(MAA-b-CD)) morphology on the adsorption behavior studies towards benzylparaben (BzP) was explored. The effects of time, concentration, and temperature towards BzP uptake were extensively evaluated. The adsorption performance of MIP(MAA-b-CD) was compared with that on the molecularly imprinted polymer-methacrylic acid (MIP(MAA)) synthesized without b-CD. The MIP(MAA-b-CD) was synthesized to obtain a spherical and spongy-porous texture with a broad pore size distribution. The MIP(MAA-b-CD) showed fast kinetic and the intra-particle diffusion model demonstrated a three step (surface and pore) adsorption process. The Koble-Corrigan isotherm was the most suitable model for data fitting, which indicated that MIP(MAA-b-CD) had homogeneous and heterogeneous surfaces. This finding clearly demonstrated that the large uptake and strong affinity of MIP(MAA-b-CD) did not only probably result from the monomer-template interactions, but also due to the morphological MIP(MAA-b-CD) structure. In contrary to MIP(MAA-b-CD), MIP(MAA) synthesized with uniform morphology and narrow pore size distribution had lower adsorption capacities and its kinetic data fitted the pseudo-second order diffusion model, indicating a two-step (surface only) adsorption process. The MIP(MAA) adsorption process followed the Langmuir isotherm model referred to solely homogeneous uptake. The calculated thermodynamic parameters showed that the BzP uptake was exothermic, spontaneous, and physisorption process onto MIPs, which supported the results of kinetics and isotherm adsorption data. This study clearly revealed that the presence of b-CD improved the morphology of synthesized MIP, and automatically enhanced the adsorption behavior of MIP.

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“…Compared to natural recognition materials, molecularly imprinted polymers (MIPs) have some advantages such as excellent ability of recognition, stability, and easy preparation. Thus, MIPs have attracted considerable attention in many fields, [7][8][9][10][11][12] such as separations, [13][14][15][16] catalysis, [17,18] biosensors, [19] and the development of biomedical materials. [20,21] In recent years, molecular imprinting technique as a promising technique was used for the separation of amino acids and chiral compounds, [22] providing a new and effective way for chiral separation.…”

Section: Introductionmentioning

confidence: 99%

The performance optimization and specific adsorption of L-phenylalanine imprinted polymers using 1-vinyl-3-carboxymethylimidazolium chloride as functional monomer

Gao

Guan

et al. 2014

Designed Monomers and Polymers

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L-Phenylalanine (L-Phe) imprinted polymers (L-MIPs) were prepared via precipitation polymerization using 1-vinyl-3-carboxymethylimidazolium chloride ([VCIM]Cl) as functional monomer, which could interact with L-Phe through electrostatic interactions, hydrogen-bonding, and π-π interactions. The morphologies of obtained polymers were observed by a scanning electron microscope, and their structures were analyzed by Fourier transform infrared spectroscopy. The effects of monomer species and molar ratio of template to functional monomer or crosslinker on adsorption capacity and imprinting factors (

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Selective adsorption and separation of BPA from aqueous solution using novel molecularly imprinted polymers based on kaolinite/Fe3O4 composites

Cited by 197 publications

References 41 publications

Preparation of core–shell magnetic ion-imprinted polymer for selective extraction of Pb(II) from environmental samples

Preparation of core–shell magnetic ion-imprinted polymer for selective extraction of Pb(II) from environmental samples

Influence of polymer morphology on the adsorption behaviors of molecularly imprinted polymer‐methacrylic acid functionalized β‐cyclodextrin

The performance optimization and specific adsorption of L-phenylalanine imprinted polymers using 1-vinyl-3-carboxymethylimidazolium chloride as functional monomer

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