Facile fabrication of snowman-like magnetic molecularly imprinted polymer microspheres for bisphenol A via one-step Pickering emulsion polymerization

2021 ◽  
pp. 104911
Author(s):  
Zehu Wang ◽  
Zeyang Zhang ◽  
Ruiye Yan ◽  
Xiying Fu ◽  
Guangshuo Wang ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Emulsion Polymerization ◽  
Molecularly Imprinted Polymer ◽  
Pickering Emulsion ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Magnetic Molecularly Imprinted Polymer ◽  
Pickering Emulsion Polymerization ◽  
One Step ◽  
Facile Fabrication

Novel molecularly imprinted malachite green bifunctional imprinted microspheres through Pickering emulsion polymerization

2021 ◽  
Author(s):  
Shi Wang ◽  
Chunsheng Lei ◽  
Shihao Liu ◽  
Zhewei Zhang ◽  
Ruyi Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Emulsion Polymerization ◽  
Malachite Green ◽  
Molecularly Imprinted Polymer ◽  
Pickering Emulsion ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Doped Tio2 ◽  
Pickering Emulsion Polymerization ◽  
Emulsion Polymerisation

Novel malachite green molecularly imprinted polymer microspheres (MIP-MGs) were firstly synthesised using a modified powdered activated carbon-supported Bi2O3-doped TiO2 to stabilise Pickering emulsion polymerisation for removal of malachite green (MG)....

scholarly journals Removal of bisphenol A from aqueous media using a highly selective adsorbent of hybridization cyclodextrin with magnetic molecularly imprinted polymer

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
S. Mamman ◽  
F. B. M. Suah ◽  
M. Raaov ◽  
F. S. Mehamod ◽  
S. Asman ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Molecularly Imprinted Polymer ◽  
Binding Capacity ◽  
Bulk Polymerization ◽  
Resonance Spectroscopy ◽  
Template Molecule ◽  
Order Kinetic ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Magnetic Molecularly Imprinted Polymer

In this study, a unique magnetic molecularly imprinted polymer (MMIP) adsorbent towards bisphenol A (BPA) as a template molecule was developed by bulk polymerization using β-cyclodextrin (β-CD) as a co-monomer with methacrylic acid (MAA) to form MMIP MAA–βCD as a new adsorbent. β-CD was hybridized with MAA to obtain water-compactible imprinting sites for the effective removal of BPA from aqueous samples. Benzoyl peroxide and trimethylolpropane trimethacrylate were used as the initiator and cross-linker, respectively. The adsorbents were characterized by Fourier transform infrared spectroscopy, scanning electronic microscopy, transmission electron microscopy, vibrating sample magnetometer, Brunauer–Emmett–Teller and X-ray diffraction. 1 H nuclear magnetic resonance spectroscopy was used to characterize the MAA–βCD and BPA–MAA–βCD complex. Several parameters influencing the adsorption efficiency of BPA such as adsorbent dosage, pH of sample solution, contact time, initial concentrations and temperature as well as selectivity and reusability study have been evaluated. MMIP MAA–βCD showed significantly higher removal efficiency and selective binding capacity towards BPA compared to MMIP MAA owing to its unique morphology with the presence of β-CD. The kinetics data can be well described by the pseudo second-order kinetic and Freundlich isotherm and Halsey models best fitted the isotherm data. The thermodynamic studies indicated that the adsorption reaction was a spontaneous and exothermic process. Therefore, MMIP based on the hybrid monomer of MAA–βCD shows good potential of a new monomer in molecularly imprinted polymer preparation and can be used as an effective adsorbent for the removal of BPA from aqueous solutions.

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