Hollow imprinted polymer nanorods with a tunable shell using halloysite nanotubes as a sacrificial template for selective recognition and separation of chloramphenicol

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51014-51023 ◽  
Author(s):  
Atian Xie ◽  
Jiangdong Dai ◽  
Xiang Chen ◽  
Tianbian Zou ◽  
Jinsong He ◽  
...  

Hollow imprinted polymer nanorods with excellent regeneration property were prepared for selective recognition and separation of chloramphenicol.

2014 ◽  
Vol 809-810 ◽  
pp. 297-301
Author(s):  
Ping Rui Meng ◽  
Liang Bo Li

In order to selectively separate luteolin from its crude solution, we synthesized luteolin molecular imprinted polymers (LMIP) with high recognition specificity for luteolin, using an imprinting technique. Luteolin was used as template, methanol as solvent, and N,N’-methylenebisacrylamide (MBAA) as the cross-linking. Then prepared LMIP were characterized and evaluated by scanning electron microscope (SEM) and equilibrium absorption experiments. The results showed that the cavities matching with the template molecules in size and structure were present in the LMIP. Adsorption dynamics analysis suggested that, when the adsorption time reached 4 h, the adsorption process had reached balance and the adsorption capacity was at steady state. The selective adsorption amount reached at 35.65 umol/g for the LMIP, while a lower value of 11.68 umol/g for the blank polymer (i.e. nontemplated). Relative to the corresponding blank polymer, LMIP had an excellent recognition to luteolin in methanol solution. Keywords: Molecular imprinting, Molecular recognition, Adsorbent, Luteolin


2022 ◽  
Author(s):  
Xue Chen ◽  
Jinyue Chai ◽  
Baodong Sun ◽  
Xue Yang ◽  
Feng Zhang ◽  
...  

In this study, the carbon-based Cu2+-immobilized metal-organic framework modified molecularly imprinted polymer (C@GI@Cu-MOFs@MIPs) adsorbent was prepared using bovine hemoglobin (BHb) as a template molecule with carbon spheres as carriers for...


Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 280 ◽  
Author(s):  
Wanwan Ma ◽  
Kyung Ho Row

A type of molecular-imprinted polymer with magnetic molybdenum disulfide as a base and deep eutectic solvent as a functional monomer (Fe3O4@MoS2@DES-MIP) was prepared with surface molecular imprinting method. It was applied as the adsorbent for the selective recognition and separation of (+)-catechin, (−)-epicatechin, (−)-epigallocatechin, (−)-epicatechin gallate, and (−)-epigallocatechin gallate in green tea in the process of magnetic solid-phase extraction (MSPE) combined with high-performance liquid chromatography (HPLC). The structure of Fe3O4@MoS2@DES-MIP was characterized by Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The adsorption properties and selective recognition ability on (−)-epigallocatechin gallate and the other four structural analogues were examined and compared. The results show that the polymer has excellent selective recognition ability for (−)-epigallocatechin gallate, and its adsorption capacity was much higher than that of structural analogues. The Fe3O4@MoS2@DES-MIP not only has the special recognition ability to template a molecule, but also can be separated by magnets with high separation efficiency and can be used in MSPE.


2018 ◽  
Vol 33 (6) ◽  
pp. 529-543 ◽  
Author(s):  
Xiao-feng Zhao ◽  
Fei-fei Duan ◽  
Pei-pei Cui ◽  
Yong-zhen Yang ◽  
Xu-guang Liu ◽  
...  

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