期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 337, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2021.116408
关键词
Boronate affinity; Molecular imprinted polymers; Selective adsorption; pH responsive composites
资金
- National Natural Science Foundation of China [21878132, 21822807]
- Graduate Scientific Research Innovation Program of Jiangsu Province [KYCX20_3042]
A boronate affinity adsorbent based on surface molecular imprinted polymers (MIPs) was prepared for rapid recognition and selective separation of shikimic acid. The MIPs material showed high adsorption capacity and superior selectivity, making it a promising material for specific capture of shikimic acid with enhanced reusability.
In this work, a surface molecular imprinted polymers (MIPs)-based boronate affinity adsorbent was prepared on dendritic fibrous silica particle (DFSP) for rapid recognition and selective separation of shikimic acid for the first time. Double recognition of both imprinted cavity and boronate affinity endowing the MIPs material high adsorption capacity and superior selectivity, which could reach 43.708 mg g(-1) at 308 K and pH 8, relatively higher than other reported materials. In addition, pH response adsorption towards SA was achieved in the work. Under the optimum condition, the experimental kinetics data is confirmed to the pseudo-second order model (R-2 = 0.9957), and the adsorption process of shikimic acid is well fitted with the Langmuir model (R-2 > 0.99). In contrast, the adsorption quantity of MIPs based adsorbent was 3.75 times higher than that of non-imprinted samples. Moreover, the as-obtained MIPs showed comparable reusability after five cycles of continuous adsorption-desorption, which maintained 86.38% of the initial adsorption quantity. The enhanced selectivity property and good regeneration performance makes the boronate affinity MIPs a promising and practical material for rapid recognition and specific capture of shikimic acid. Therefore, the strategy posed in this work sheds new light on the role of boronate affinity MIPs in the adsorption of shikimic acid. (C) 2021 Elsevier B.V. All rights reserved.
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