“…4A) to be 332.6 m 2 g À1 and 210.4 m 2 g À1 , respectively. These were much higher than other MIPs, 17,18 which was the basis for the increase of adsorption capacity. Furthermore, as shown in Fig.…”
A restricted access molecularly imprinted polymer (RAMIP) crosslinked with bovine serum albumin (BSA) was prepared on the surface of the mesoporous UiO-66-NH2 metal–organic framework (MOF).
“…4A) to be 332.6 m 2 g À1 and 210.4 m 2 g À1 , respectively. These were much higher than other MIPs, 17,18 which was the basis for the increase of adsorption capacity. Furthermore, as shown in Fig.…”
A restricted access molecularly imprinted polymer (RAMIP) crosslinked with bovine serum albumin (BSA) was prepared on the surface of the mesoporous UiO-66-NH2 metal–organic framework (MOF).
“…The absorption band at ∼ 1072 cm −1 representing the stretching vibration of the Si-O-Si group appeared in the red curve, indicating the successful preparation of silica-modified magnetic Fe 3 O 4 ( Xu, Song, Zhao, Zhou, & Qiao, 2011 ). Additionally, the extra absorption peaks at ∼ 1736 cm −1 (C O)and ∼ 2990 cm −1 (C—H) were observed in the spectrum (blue curve) ( Wang, Qiua, Guo, Ye, He, & Li, 2018 ), meaning that the functional monomers (MAA) were successfully grafted to the particle surface through the polymerization reaction, and a wrapped imprinting layer was formed on the surface of Fe 3 O 4 @SiO 2 . Fig.…”
“…The specific surface area of UiO‐66‐NH 2 and MIP@UiO‐66‐NH 2 was determined by BET, as shown in Supporting Information A. The specific surface area of UiO‐66‐NH 2 was 325.8 m 2 /g, and that of MIP@UiO‐66‐NH 2 was decreased to 217.7 m 2 /g, which is much higher than that of other imprinted polymers . A high specific surface area greatly increased the adsorption capacity.…”
In this work, a novel surface molecularly imprinted polymer with high adsorption capacity, high adsorption rate, and high selectivity for fluoroquinolones was prepared on the surface of UiO‐66‐NH2, which is a kind of metal‐organic framework. The surface morphology and adsorption properties of this molecularly imprinted polymer were investigated. The maximum adsorption capacity was 99.19 mg/g, and adsorption equilibrium was achieved within 65 s. Combined with reversed‐phase high‐performance liquid chromatography, the molecularly imprinted polymer was used to selectively enrich, separate and analyze fluoroquinolones present in lake water. The results showed that the recoveries of the four fluoroquinolones were 92.6–100.5%, and the relative standard deviations were 2.9–6.4% (n = 3). The novel molecularly imprinted polymer is an excellent adsorbent and has broad application prospects in the enrichment and separation of trace analytes in complex samples.
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