Preparation of chlorogenic acid surface-imprinted magnetic nanoparticles and their usage in separation of Traditional Chinese Medicine

Gu, Xiaohong; Xu, Rong; Yuan, Gao-lin; Lü, Hui; B, Gu; Xie, Hong-Ping

doi:10.1016/j.aca.2010.06.033

Cited by 117 publications

(50 citation statements)

References 41 publications

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“…229 Suspension polymerization is a simple method suited to the preparation of porous M-MIPs with spherical or particle shape, since the Fe 3 O 4 magnetic particles need no functionalization. Several research groups 66,[211][212][213][214][215][216][217][218][219] have reported the synthesis of M-MIPs by suspension polymerization. For example, Li et al developed a simple and direct method for the preparation of M-MIP beads, which was based on suspension polymerization, using Fe 3 O 4 particles as magnetic cores, atrazine as a template and MAA as a functional monomer.…”

Section: Special Strategies Of Mit For Mipsmentioning

confidence: 99%

Molecular imprinting: perspectives and applications

et al. 2016

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a Molecular imprinting technology (MIT), often described as a method of making a molecular lock to match a molecular key, is a technique for the creation of molecularly imprinted polymers (MIPs) with tailor-made binding sites complementary to the template molecules in shape, size and functional groups. Owing to their unique features of structure predictability, recognition specificity and application universality, MIPs have found a wide range of applications in various fields. Herein, we propose to comprehensively review the recent advances in molecular imprinting including versatile perspectives and applications, concerning novel preparation technologies and strategies of MIT, and highlight the applications of MIPs. The fundamentals of MIPs involving essential elements, preparation procedures and characterization methods are briefly outlined.Smart MIT for MIPs is especially highlighted including ingenious MIT (surface imprinting, nanoimprinting, etc.), special strategies of MIT (dummy imprinting, segment imprinting, etc.) and stimuli-responsive MIT (single/dual/ multi-responsive technology). By virtue of smart MIT, new formatted MIPs gain popularity for versatile applications, including sample pretreatment/chromatographic separation (solid phase extraction, monolithic column chromatography, etc.) and chemical/biological sensing (electrochemical sensing, fluorescence sensing, etc.). Finally, we propose the remaining challenges and future perspectives to accelerate the development of MIT, and to utilize it for further developing versatile MIPs with a wide range of applications (650 references).

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Section: Special Strategies Of Mit For Mipsmentioning

confidence: 99%

Molecular imprinting: perspectives and applications

et al. 2016

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“…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%

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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“…It can also be seen that the total adsorption capacities for TC-HCL adsorption slightly decreased with the number of times the composite is recycled. This could be ascribed to the fact that the regeneration process might bring about a decrease in the number of binding sites (Gu et al 2010).…”

Section: Desorption and Reusementioning

confidence: 99%

“…The kinetic data obtained were analyzed using a pseudo-first-order equation (Ho and McKay 1999a), pseudo-second-order equation (Ho and McKay 1999b) and intra-particle diffusion model (Weng and Pan 2007), which can be expressed by equations (3-5), respectively, and were used to describe the rate of solute uptake at the solid-solution interface.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Synthesis of Magnetic Halloysite Composites for the Effective Removal of Tetracycline Hydrochloride from Aqueous Solutions

Guan

Pan

et al. 2012

Adsorption Science & Technology

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Herein, we explain an effective method for the synthesis of halloysite/CoFe 2 O 4 magnetic composites (magnetic halloysite nanotubes or MHNTs) and their use as as adsorbents to effectively remove tetracycline hydrochloride (TC-HCl) from aqueous solutions. The synthesized composites were characterized by the following methods: Fourier transform infrared, X-ray diffraction, transmission electron microscopy, vibrating sample magnetometry and atomic absorption spectrometry. Our study results indicated that MHNTs have strong magnetic (Ms = 34.02 emu/g) and low leakage properties. The adsorption capacities of MHNTs were investigated by performing a series of experiments with different pH, temperatures, initial concentrations and reaction time. The Langmuir isotherm model fitted to equilibrium data better than the Freundlich model. The kinetic properties of the composites were well-described by applying the pseudo-second-order equation. Even after carrying out two repeated experimental cycles, the reusability of the synthesized composites did not obviously degenerate.

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Preparation of chlorogenic acid surface-imprinted magnetic nanoparticles and their usage in separation of Traditional Chinese Medicine

Cited by 117 publications

References 41 publications

Molecular imprinting: perspectives and applications

Molecular imprinting: perspectives and applications

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

Synthesis of Magnetic Halloysite Composites for the Effective Removal of Tetracycline Hydrochloride from Aqueous Solutions

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