Metal ion-mediated molecular-imprinting polymer for indirect recognition of formate, acetate and propionate

The quartz crystal microbalance (QCM) modified by chitosan/α-pinene, prepared by spin-coating technique has been successfully developed with molecular imprinting polymer (MIP) concept. To remove the template, we carried out two treatments namely heating and vacuum in a desiccator. To find out selectivity of the sensor, the QCM modified with polymer chitosan has been tested with another analyte such as acetone, ethanol, N-amyl alcohol, iso-amyl alcohol. The result shows that chitosan/α-pinene coated QCM sensor can provide a good response as good as sensitivity. The best QCM at heating treatment in a furnace with the decline of frequency is 32 Hz, then the QCM vacuum pumping treatment with decline frequency is 27 Hz.

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Microwave Enhanced Synthesis of Chitosan-Graft-Polyacrylamide Molecular Imprinting Polymer for Selective Removal of 17β-Estradiol at Trace Concentration

Asian Journal of Biochemistry ◽

10.3923/ajb.2011.38.54 ◽

2010 ◽

Vol 6 (1) ◽

pp. 38-54 ◽

Cited By ~ 26

Author(s):

N. Saifuddin ◽

Y.A.A. Nur ◽

S.F. Abdullah

Keyword(s):

Molecular Imprinting ◽

Selective Removal ◽

Trace Concentration ◽

Molecular Imprinting Polymer ◽

17Β Estradiol

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Study on synthesis and adsorption properties of glutathione surface molecular imprinting polymer

Pigment & Resin Technology ◽

10.1108/prt-08-2020-0091 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Jun Zhang ◽

Meng Wang ◽

Pu Liu ◽

Xiaoyan Zhang ◽

Ting Huo ◽

...

Keyword(s):

Adsorption Capacity ◽

Molecular Imprinting ◽

Fourier Transforms ◽

Optimal Operation ◽

Optimal Time ◽

Maximum Adsorption Capacity ◽

Surface Molecular Imprinting ◽

Content Type ◽

Operation Conditions ◽

Molecular Imprinting Polymer

Purpose In this study, a novel glutathione (GSH) surface molecular imprinting polymer (SMIP) was successfully prepared by using macroporous adsorption resins (MAR) as substrate, which could separate and purify GSH efficiently. Design/methodology/approach SMIP was synthesized by chloromethylated modified MAR (LX1180-Cl) as the substrate, N, N’-methylenebisacrylamide (NMBA) as a crosslinker, GSH as a template, acrylamide (AM) and N-vinylpyrrolidone (NVP) as functional monomers. The morphology and structure of the polymer were characterized by scanning electron microscope and Fourier transforms infrared spectroscopy. Findings The maximum adsorption capacity toward GSH was 39.0 mg/g and the separation decree had relation to L-cysteine (L-cys) was 4.2. The optimal operation conditions were studied in detail and the got as follows: the molar ratios of NMBA, AM, GSH and NVP, were 7.0, 0.8 and 0.5. The optimal time and temperature were 14 h and 40°C, respectively. The Langmuir and pseudo-first-order model were fitting these adsorption characteristics well. Practical implications GSH has a diversity of medicinal and bioactive functions, so the purpose of this study representing a method in separate and purify technology of GSH, which provided a way for the development of medicine. Originality/value This contribution provided a novel way to separate GSH from L-cys. Under the optimal conditions, the maximum adsorption capacity toward GSH was 39.0 mg/g and the separation decree had relation to L-cys was 4.2.

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Synthesis, characterization, and adsorption properties of a Ce(III)-imprinted polymer supported by mesoporous SBA-15 matrix by a surface molecular imprinting technique

Canadian Journal of Chemistry ◽

10.1139/cjc-2013-0423 ◽

2014 ◽

Vol 92 (3) ◽

pp. 257-266 ◽

Cited By ~ 10

Author(s):

Yan Liu ◽

Sujun Tian ◽

Xiangguo Meng ◽

Xiaohui Dai ◽

Zhanchao Liu ◽

...

Keyword(s):

Molecular Imprinting ◽

Metal Ion ◽

Ph Value ◽

Matrix Material ◽

Infrared Spectrometry ◽

Batch Adsorption ◽

Order Kinetic ◽

Imprinted Polymer ◽

Surface Molecular Imprinting ◽

Ion Imprinted

A new Ce(III) ion imprinted polymer (Ce(III)-IIP), which can be used for selective removal of Ce(III) from aqueous solutions, was successfully prepared based on the matrix material of ordered mesoporous silica SBA-15 by surface molecular imprinting technology. The prepared polymer was characterized by X-ray diffraction, transmission electron microscopy, Fourier transmission infrared spectrometry, and nitrogen adsorption−desorption isotherm. The results showed that Ce(III)-IIP kept a uniform framework mesoporosity of SBA-15 but a decrease in Brunauer−Emmett−Teller surface area, pore volume, and average pore diameter. Batch adsorption tests were researched on the effects of solution pH value, mass of sorbent, and contact time at different initial Ce(III) concentrations and temperatures. The kinetic data well fitted the pseudo-second-order kinetic model compared with the pseudo-first-order model. The adsorption isotherm fitted Langmuir model and the dimensionless separation factor RL indicated favorable adsorption. In addition, the Gibbs free energy (ΔG0), entropy (ΔS0), and enthalpy (ΔH0) were calculated from the adsorption data. These values suggested that the adsorption of Ce(III) onto Ce(III)-IIP was a spontaneous and endothermic nature of the process. The relative selectivity coefficients for different metal ion were larger than that of the nonimprinted polymer, indicating that Ce(III)-IIP synthesized for Ce(III) had a higher selectivity specialism for this ion.

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