Hydrophobic cobalt ferrite nanoparticles (CoFe₂O₄) (HCF NPs) were synthesized with the size of 14–27 nm by a simple chemical coprecipitation method in the presence of sodium dodecyl sulfate (SDS) surfactant. Then the decoration of the surface of graphite powder with hydrophobic cobalt ferrite nanoparticles was carried out using the sonication method. The result of the sonication method revealed that hydrophobic CoFe₂O₄ nanoparticles were attached to the graphite powder via shared hydrophobic interaction and caused in nanoscale CoFe₂O₄-graphite nanocomposites (HCFG). The broadband at 550 nm from the UV-Vis. spectroscopy confirmed the formation of cobalt ferrite nanoparticles. The functional groups and metal oxide peaks of the synthesized HCFG were characterized using FTIR spectroscopy. SEM, AFM, and TEM results established the surface morphology and size of the nanocomposites. The iron, oxygen, and carbon contents and the crystalline nature of the nanocomposites were confirmed using EDAX and XRD results. The magnetic measurement value of HCFG nanocomposites was 15 emu/g. This method offers a simple, fast, and low-cost method for the synthesis of hydrophobic cobalt ferrite-graphite nanocomposites.

在十二烷基硫酸钠（SDS）表面​​活性剂存在下，采用简单的化学共沉淀法合成了疏水性钴铁氧体纳米粒子（CoFe ₂ O ₄）（HCF NPs），尺寸为14–27 nm。然后使用疏水化钴铁氧体纳米粒子对石墨粉表面进行装饰。超声处理的结果表明，疏水的CoFe ₂ O ₄纳米颗粒通过共享的疏水相互作用附着在石墨粉末上，并在纳米级的CoFe ₂ O _{4中产生。}石墨纳米复合材料（HCFG）。紫外可见光在550 nm处的宽带。光谱证实了钴铁氧体纳米颗粒的形成。使用FTIR光谱对合成的HCFG的官能团和金属氧化物峰进行了表征。SEM，AFM和TEM结果确定了纳米复合材料的表面形态和尺寸。使用EDAX和XRD结果证实了纳米复合材料的铁，氧和碳含量以及晶体性质。HCFG纳米复合材料的磁测量值为15 emu / g。该方法为合成疏水性钴铁氧体-石墨纳米复合材料提供了一种简单，快速且低成本的方法。