writer：Zuoting Yang，Junjie Chen，Jiqi Wang，Qiuyu Zhang and Baoliang Zhang
keywords：BSA; Self-driven; Surface imprinting; Magnetic tubular nanofibers; Dopamine
source：期刊
specific source：ACS Sustainable Chem. Eng.
Issue time：2020年
The development of materials with high adsorption capacity and selectivity, simple operation, as well as short adsorption equilibrium time are still the focus in the domain of imprinting technique. Based on this, a novel water-compatible imprinted material (SIPMTFs) on the surface of magnetic carriers is prepared by one-pot method. Surface imprinted magnetic tubular carbon nanofibers (SIPMTFs) are based on magnetic tubular carbon nanofibers (MTFs). Dopamine (DA) is selected as functional monomer. Due to the magnetic properties, SIPMTFs can efficiently separate high-purity proteins under energy-saving. MTFs are composed of carbon nanofibers with porous tube wall and Fe nanoparticles loaded inside the tube. That makes SIPMTFs possess self-driven adsorption property and magnetic responsiveness. Thereby, the above structure simplifies the separation process while increases the adsorption amount. Meanwhile, the adsorption speed is accelerated. The adsorption capacity of SIPMTFs on bovine serum albumin (BSA) achieves 430.39 mg/g in 30 min. The satisfactory imprinting factor (IF) is 2.85. More significantly, the selectivity coefficients of SIPMTFs for lysozyme (Lyz), human serum albumin (HSA), Ovalbumin (OVA) and Cytochrome C (Cyt C) are 4.48, 6.88, 3.49 and 4.55. Furthermore, SIPMTFs could selectively rebind BSA from fetal bovine serum (FBS) and behave excellent regenerative property. It fits well with the concept of green sustainable development. These results indicate that MTFs can be used as a novel class of carriers in the domain of molecular imprinting to isolate and purify proteins.