Abstract：
:In this work, a synergistic imprinting strategy combined with metal coordination based on ligand-free Fe3O4-Cu was proposed to fabricate molecularly imprinted polymers (MIPs) for the recognition and isolation of bovine hemoglobin (BHb) specifically in biological samples. Copper doped magnetic microspheres prepared solvothermally in a one-pot pathway act as both magnetic core and metal affinity substrate. Upon anchoring BHb to Fe3O4-Cu through metal coordination, the imprinted layer was formed via dopamine self-polymerization. Profiting from the synergistic effect, the obtained imprinted microspheres exhibited an enhanced adsorption performance with the adsorption capacity of 400.86 mg g-1, imprinting factor of 11.88, selectivity coefficient above 5.8, superior to most of other reported BHb-MIPs. Furthermore, kinetic adsorption analyses pointed to a chemisorption-limited process as described by the pseudo-second-order model, and the isothermal adsorption analyses implied monolayer adsorption, as described by the Langmuir model. In addition, the resultant magnetic MIPs can be used at least six adsorption-desorption cycles without re-incubation in the metallic salt solution, avoiding secondary environmental pollution. Furthermore, the well-defined materials showed selectivity both in individual protein samples and bovine serum, providing a promising potential in bioseparation.
journal_name
Talantajournal_title
Talantaauthors
Hao Y,Gao Y,Song H,Niu Y,Chen X,Liu X,Gao R,Wang Sdoi
10.1016/j.talanta.2021.122496keywords:
["Bovine hemoglobin","Ligand-free Fe(3)O(4)–Cu","Specific adsorption","Surface imprinting","Synergistic effect"]subject
Has Abstractpub_date
2021-10-01 00:00:00pages
122496eissn
0039-9140issn
1873-3573pii
S0039-9140(21)00417-3journal_volume
233pub_type
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