Abstract
Novel one-dimensional hierarchical Fe3O4@CuSiO3 microchains have been synthesized via a magnetic-induced stöber method combined with an in-situ chemical conversion process. During the magnetic assembly, the SiO2 layer can not only consolidate the magnetic assembly of 1D nanostructure as a “glue”, but also tune the length of CuSiO3 nanofibers. Besides, the resultant hierarchical Fe3O4@CuSiO3 microchains exhibit large surface area, good structural stability, and magnetic response, which make them as a good adsorbent for histine-rich proteins and the maximum adsorption capacity could reach up to 1954 mg g−1. In addition, the as-prepared hierarchical Fe3O4@CuSiO3 microchains exhibit potential absorbability as a renewable adsorbent for removing high abundant protein of hemoglobin in biological field. Furthermore, this strategy can also be applied to prepare other 1D hierarchical magnetic metal silicate composites.
The hierarchical 1D Fe3O4@CuSiO3 microchains were prepared by stöber method under magnetic field and subsequent hydrothermal reaction with copper ions, which exhibited excellent performance on the adsorption and separation of his-rich proteins in biological fluid with an external magnet. [Display omitted]
•The SiO2 layers consolidated the magnetic assembly of 1D nanostructure.•The Fe3O4@CuSiO3 microchains showed superior adsorption on histidine-rich proteins.•This strategy could be extended to prepare other 1D magnetic metal silicate.