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Preparation of molecularly imprinted polymer by surface imprinting technique and its performance for adsorption of dibenzothiophene
Author(s) -
Xu WanZhen,
Zhou Wei,
Bian LiHua,
Huang WeiHong,
Wu XiangYang
Publication year - 2011
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201100147
Subject(s) - dibenzothiophene , molecularly imprinted polymer , freundlich equation , adsorption , langmuir , fourier transform infrared spectroscopy , molecular imprinting , chemistry , polymer , monomer , nuclear chemistry , langmuir adsorption model , chemical engineering , selectivity , materials science , organic chemistry , flue gas desulfurization , engineering , catalysis
The novel surface imprinted polymer composites (MIP/K 2 Ti 4 O 9 ) were prepared using dibenzothiophene (DBT) as the template, 4‐vinylpyridine as the functional monomer and potassium tetratitanate whisker (K 2 Ti 4 O 9 ) as the carrier. The synthetic product was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. Parameters influencing DBT adsorption such as contact time, temperature and DBT initial concentration were investigated. The adsorption kinetics were evaluated with the pseudo‐first‐order and pseudo‐second‐order models, and the adsorption isotherms were fitted by Langmuir and Freundlich models. Selectivity experiments showed that MIP/K 2 Ti 4 O 9 exhibited excellent recognition capacity and binding affinity to DBT compared with the comparative substrates. MIP/K 2 Ti 4 O 9 could also be easily regenerated and reused ten times with only about 20% loss of adsorption capacity.