Magnetic Fe₃O₄/C nanoparticles with hollow grape cluster morphology were synthesized through hydrothermal method, using SBA-15 as the hard template, glucose as the carbon source, and ferric chloride hexahydrate as the iron source. As-synthesized magnetic nanomaterials were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption-desorption isotherms, vibrating sample magnetometer (VSM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy. Meanwhile, the adsorption of organic dyes in water by magnetic nanoparticles was further studied. Results indicated that these magnetic nanomaterials exhibited hollow spherical structure similar to a bunch of grapes, and that magnetite Fe₃O₄ particles were embedded in the matrix of carbon nanoscale. The specific surface area, pore volume, pore diameter, and saturation magnetization of prepared samples were 522.7 m²/g, 0.4454 cm³/g, 3.5 nm, and 31.9 emu/g, respectively. At the same time, as-synthesized materials presented excellent adsorption properties and reutilization, so the total adsorption capacities for methyl orange, methylene blue, and rhodamine B were as high as 400 mg/g, 600 mg/g, and 150 mg/g under the natural pH of solution, respectively. Therefore, it is anticipated that these hollow magnetic Fe₃O₄/C nanoparticles will have potential industrial application prospects in environment water purification.

以SBA-15为硬模板，葡萄糖为碳源，六水合氯化铁为铁源，通过水热法合成了具有空心葡萄簇形的磁性Fe ₃ O ₄ / C纳米粒子。借助X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），N ₂表征了合成的磁性纳米材料吸附-解吸等温线，振动样品磁力计（VSM），X射线光电子能谱（XPS），傅里叶变换红外光谱（FTIR）和拉曼光谱。同时，进一步研究了磁性纳米粒子对水中有机染料的吸附作用。结果表明，这些磁性纳米材料呈现出类似于一串葡萄的中空球形结构，并且磁铁矿中的Fe ₃ O ₄颗粒嵌入了碳纳米尺度的基质中。制备的样品的比表面积，孔体积，孔径和饱和磁化强度为522.7 m ² / g，0.4454 cm ³/g、3.5 nm和31.9 emu / g。同时，合成后的材料表现出优异的吸附性能和再利用性，因此甲基橙，亚甲基蓝和若丹明B的总吸附容量分别高达400 mg / g，600 mg / g和150 mg / g在溶液的自然pH下 因此，预计这些中空磁性Fe ₃ O ₄ / C纳米颗粒将在环境水净化方面具有潜在的工业应用前景。