Faramawy A M, El-Sayed H M
Department of Physics, Faculty of Science, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
Sci Rep. 2024 Mar 23;14(1):6935. doi: 10.1038/s41598-024-57134-7.
In this work, core/shell of CuFeO/ZnFeO nanostructure composite was prepared by hydrothermal method. X-ray diffraction (XRD) analysis, transmission electron microscope imaging, energy dispersive X-ray (EDX), and Fourier transform infrared techniques were used to prove the phase formation, morphology, elemental analysis, and cation distribution of core/shell structure, respectively. Furthermore, measurement of the optical properties proved the decrease of photoluminescence (PL) efficiency. The magnetic measurements showed an enhancement of the magnetization by about 63% relative to pure Cu ferrite, and the magnetization curve exhibited superparamagnetic behavior. These results were explained in terms of the depression of the magnetic dead layer thickness in the core/shell structure. The results unleash the promising applications of the prepared samples as transformer cores in the high frequency range and as a photocatalytic agent for water purification and hydrogen production.
在本工作中，采用水热法制备了CuFeO/ZnFeO纳米结构复合材料的核壳结构。利用X射线衍射（XRD）分析、透射电子显微镜成像、能量色散X射线（EDX）和傅里叶变换红外技术分别证明了核壳结构的相形成、形态、元素分析和阳离子分布。此外，光学性质的测量证明了光致发光（PL）效率的降低。磁性测量表明，相对于纯铜铁氧体，磁化强度增强了约63%，并且磁化曲线呈现超顺磁行为。这些结果可以通过核壳结构中磁性死层厚度的减小来解释。这些结果揭示了所制备样品在高频范围内作为变压器铁芯以及作为水净化和制氢的光催化剂的潜在应用前景。
