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采用一锅水热法在180°C下制备三维Eu3+-石墨烯自组装复合材料.通过X射线衍射、扫描电子显微镜、透射电子显微镜表征了合成样品的物相及形貌特征.结果表明:合成的样品具有多孔性结构,层与层之间堆叠成三维结构,并且结果显示产物中没有Eu3+的团聚体.经过拉曼光谱,傅里叶红外光谱分析表明,Eu3+通过含氧官能团与石墨烯复合.通过振动样品磁强计测定样品的磁滞回线,对其磁学性能进行研究,剥离顺磁信号后,测得相应的矫顽力Hc≈39.61 Oe(1 Oe=79.5775 A/m),饱和磁化强度Ms≈0.08 emu/g,发现该产物具有弱的铁磁性,与石墨烯相比,Eu3+的加入使得产物的铁磁性有较大提高.
A one-pot hydrothermal method was used to prepare three-dimensional Eu3 + -p graphene self-assembled composites at 180 ° C. The phase and morphology of the synthesized samples were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Of the sample has a porous structure, and the layers are stacked in a three-dimensional structure, and the result shows that there is no Eu3 + agglomerate in the product.According to Raman spectrum and Fourier transform infrared spectroscopy, Eu3 + The magnetic hysteresis loop of the sample was measured by vibrating sample magnetometer and its magnetic properties were studied. After the paramagnetic signal was peeled off, the corresponding coercive force Hc ≈ 39.61 Oe (1 Oe = 79.5775 A / m) The saturation magnetization Ms≈0.08 emu / g, found that the product has weak ferromagnetism, compared with graphene, Eu3 + makes the product of ferromagnetism has greatly increased.