Abstract

Variation in temperature during synthesis is a favorite aspect to get enhanced structural, optical, magnetic, and catalytic properties. Here, in this work, Spinel (CuFe₂O₄) ferrites were formulated with various calcination temperatures. The method used is a simple, economical, and eco-friendly microwave combustion method. Impact of annealing temperature on structural analysis is confirmed by XRD analysis. Under the following parameters, the structural changes are discussed: diametrical size, lattice parameter, strain, tetrahedral and octahedral hopping length, and bond length, respectively. HR-TEM results assure the spherical-shaped morphology. The average diametrical size calculated is in good agreement with the XRD results. The EDAX spectrum confirms the composition of sample and its purity. A FT-IR study exemplifies the ferrite characteristic peaks available as synthesized sample. The UV–Vis analysis and Tauc’s plot of the samples give us the optical bandgaps as 2.2, 2.1, and 2.08 eV, respectively. An increase in calcination temperature exhibits an enhancement in saturation magnetization (Ms), remnant magnetization (Mr), and coercivity (Hc) at room temperature. Degradation activity of methylene blue (MB) studied by catalyst CuF-MW, CuF-500, and CuF-600 expresses the degradation efficiency of the catalyst. CuF-MW exhibits an excellent result than other samples, due to large surface area and the small diametrical size.

中文翻译：

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煅烧温度对尖晶石CuFe 2 O 4的结构，光学和磁性的影响，以增强光催化活性

摘要

合成过程中温度的变化是获得增强的结构，光学，磁性和催化性能的最喜欢的方面。在这里，在这项工作中，尖晶石（CuFe ₂ O ₄铁氧体在不同的煅烧温度下配制。所使用的方法是一种简单，经济且环保的微波燃烧方法。XRD分析证实了退火温度对结构分析的影响。在以下参数下，讨论了结构变化：直径尺寸，晶格参数，应变，四面体和八面体跳变长度和键长。HR-TEM结果确保了球形形态。计算出的平均直径尺寸与XRD结果非常吻合。EDAX光谱确定了样品的组成及其纯度。FT-IR研究举例说明了可作为合成样品使用的铁氧体特征峰。样品的UV-Vis分析和Tauc曲线给出的光学带隙分别为2.2、2.1和2.08 eV。煅烧温度的升高在室温下表现出饱和磁化强度（Ms），残余磁化强度（Mr）和矫顽力（Hc）的增强。通过催化剂CuF-MW，CuF-500和CuF-600研究的亚甲基蓝（MB）的降解活性表示催化剂的降解效率。由于表面积大和直径小，CuF-MW表现出比其他样品更好的结果。