Abstract In this study, Cu3(1,3,5-benzenetricarboxylate) (Cu-BTC) metal-organic frameworks decorated with Fe3O4 nanoparticles were synthesized via the hydrothermal process. Subsequently, the obtained Fe3O4/Cu-BTC was coated by poly(3,4-ethylenedioxythiophene) (PEDOT) via in situ chemical polymerization methods. The chemical, structural, and magnetic hysteresis analysis of particles were carried oud via scanning electron microscope (SEM), X-ray diffractometer (XRD), vibrating sample magnetometer (VSM), and fourier transform infrared spectroscopy (FTIR) machines. The characteristic peaks of C/F and P@C/F were obtained without any other impurities and extra peaks. The Fe3O4 decorated Cu-BTC displayed octahedral morphology with average particle size of 150–170 nm. As an electromagnetic wave absorber, the obtained Fe3O4 decorated Cu-BTC was mixed with 45% by weight of paraffin. For comparative studies, the PEDOT coated Fe3O4/Cu-BTC was also filled to the paraffin matrix. The higher real and imaginary part of permittivity values were obtained with introduction of conductive PEDOT shell. The electromagnetic wave absorption performance of composites was determined with permeability and permittivity values. The result exhibited that the strongest reflection loss was −18.3 dB at 17.5 GHz frequency with a thickness of 5 mm for PEDOT coated Fe3O4/Cu-BTC composite. It was proved that the conductive PEDOT coating on Fe3O4/Cu-BTC enhanced electromagnetic wave absorption capability of composite and the PEDOT coated Fe3O4/Cu-BTC can be considered as a good candidate for electromagnetic wave absorption applications.

中文翻译：

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用 Fe3O4 纳米粒子装饰的 PEDOT 涂层 Cu-BTC 金属有机骨架及其增强的电磁波吸收

摘要 本研究采用水热法合成了用 Fe3O4 纳米粒子修饰的 Cu3(1,3,5-苯三羧酸盐) (Cu-BTC) 金属有机骨架。随后，通过原位化学聚合方法将获得的 Fe3O4/Cu-BTC 涂覆在聚（3,4-亚乙基二氧噻吩）（PEDOT）上。通过扫描电子显微镜 (SEM)、X 射线衍射仪 (XRD)、振动样品磁强计 (VSM) 和傅立叶变换红外光谱仪 (FTIR) 对颗粒进行化学、结构和磁滞分析。获得了 C/F 和 P@C/F 的特征峰，没有任何其他杂质和额外的峰。Fe3O4 装饰的 Cu-BTC 显示八面体形态，平均粒径为 150-170 nm。作为电磁波吸收体，将得到的 Fe3O4 装饰的 Cu-BTC 与 45%（重量）的石蜡混合。为了进行比较研究，PEDOT 涂覆的 Fe3O4/Cu-BTC 也填充到石蜡基质中。介电常数值的较高实部和虚部是通过引入导电 PEDOT 壳获得的。复合材料的电磁波吸收性能由磁导率和介电常数值决定。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。为了进行比较研究，PEDOT 涂覆的 Fe3O4/Cu-BTC 也填充到石蜡基质中。介电常数值的较高实部和虚部是通过引入导电 PEDOT 壳获得的。复合材料的电磁波吸收性能由磁导率和介电常数值决定。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。为了进行比较研究，PEDOT 涂覆的 Fe3O4/Cu-BTC 也填充到石蜡基质中。介电常数值的较高实部和虚部是通过引入导电 PEDOT 壳获得的。复合材料的电磁波吸收性能由磁导率和介电常数值决定。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。介电常数值的较高实部和虚部是通过引入导电 PEDOT 壳获得的。复合材料的电磁波吸收性能由磁导率和介电常数值决定。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。介电常数值的较高实部和虚部是通过引入导电 PEDOT 壳获得的。复合材料的电磁波吸收性能由磁导率和介电常数值决定。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。结果表明，PEDOT 涂层 Fe3O4/Cu-BTC 复合材料在 17.5 GHz 频率下的最强反射损耗为 -18.3 dB，厚度为 5 mm。事实证明，Fe3O4/Cu-BTC 上的导电 PEDOT 涂层增强了复合材料的电磁波吸收能力，PEDOT 涂层的 Fe3O4/Cu-BTC 可以被认为是电磁波吸收应用的良好候选者。