Novel Biocompatible Magnetoelectric MnFe2O4 Core@BCZT Shell Nano –Hetero‐Structures with Efficient Catalytic Performance

Biocompatible magnetoelectric (ME) core –shell MnFe2O4/Ba0.85Ca0.15Zr0.1Ti0.9O3 nanoparticles (NPs) are developed via hydrothermal synthesis for the first time. The importance of the surface functionalization of MnFe2O4 cores with hydrophilic and hydrophobic agents for the hetero-structure formation with ferroelectric BCZT shell is revealed. ME NPs demonstrate 95% degradation of a model pollutant Rhodamine B under an external AC magnetic field treatment. AbstractMagnetoelectric (ME) small-scale robotic devices attract great interest from the scientific community due to their unique properties for biomedical applications. Here, novel ME nano hetero-structures based on the biocompatible magnetostrictive MnFe2O4 (MFO) and ferroelectric Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) are developed solely via the hydrothermal method for the first time. An increase in the temperature and duration of the hydrothermal synthesis results in increasing the size, improving the purity, and inducing morphology changes of MFO nanoparticles (NPs). A successful formation of a thin epitaxial BCZT-shell with a 2 –5 nm thickness is confirmed on the MFO NPs (77 ± 14 nm) preliminarily treated with oleic acid (OA) or polyvinylpyrrolidone (PVP), whereas no shell is revealed on the surface of pristine MFO NPs. High magnetization is revealed for the developed ME NPs based on PVP- and OA-functionalized MFO NP s (18.68 ± 0.13 and 20.74 ± 0.22 emu g−1, respectively). Moreover, ME NPs demonstrate 95% degrada...
Source: Small - Category: Nanotechnology Authors: Tags: Research Article Source Type: research