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Rare Metals
Erschienen in: Rare Metals 10/2020

15.07.2016

Preparation of MnO2-impregnated carbon-coated Fe3O4 nanocomposites and their application for bovine serum albumin adsorption

verfasst von: Chol-Hwan Kim, Ze-Fei Zhang, Lin-Shan Wang, Ting Sun

Erschienen in: Rare Metals | Ausgabe 10/2020

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Abstract

MnO2-impregnated carbon-coated Fe3O4 (Fe3O4/C/MnO2) nanocomposites with a good core–shell structure were prepared by direct oxidation of carbon-coated Fe3O4 (Fe3O4/C) microspheres with KMnO4 in alkaline solution and applied to adsorb bovine serum albumin (BSA). X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectrometer (FTIR), vibrating sample magnetometer (VSM) and thermogravimetric analyzer (TGA) tests show that Fe3O4/C microspheres were newly functionalized via the oxidation by KMnO4. Fe3O4/C/MnO2 nanocomposites exhibit a higher adsorption capacity for BSA than Fe3O4/C microspheres and the maximum adsorption of BSA on them occurs at pH 4.7, which is the isoelectric point of BSA. Langmuir isotherm model describes the adsorption of BSA better than Freundlich model and Temkin model, and the kinetics data fit well with the pseudo-second-order model.
Vorheriger Artikel Numerical simulation of single roller melt spinning for NdFeB alloy based on finite element method
Nächster Artikel Improved electrochemical performance of ternary Sn–Sb–Cu nanospheres as anode materials for lithium-ion batteries

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Metadaten
Titel
Preparation of MnO2-impregnated carbon-coated Fe3O4 nanocomposites and their application for bovine serum albumin adsorption
verfasst von
Chol-Hwan Kim
Ze-Fei Zhang
Lin-Shan Wang
Ting Sun
Publikationsdatum
15.07.2016
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 10/2020
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-016-0779-3

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