稻糠基磁性高吸油材料的仿生制备及性能研究

利用多巴胺的自聚合作用使Fe3O4纳米粒子固载于稻糠表面,进而采用十八胺进行样品表面疏水改性,制备得到稻糠基新型磁性疏水吸油材料.利用扫描电子显微镜、傅里叶变换红外光谱、X射线衍射、磁滞回线和接触角测定等技术对制备的样品进行了表征.实验结果表明,多巴胺改性成功实现了Fe3O4纳米粒子在稻糠表面的固载,所制得的稻糠基吸油材料具有较好的磁性,其磁饱和强度达39.6 emu/g,样品的接触角达135°,具有高疏水性.在对三氯甲烷等七种油性物质的吸油实验中发现,稻糠基新型磁性疏水吸油材料的最高吸油量可达自身质量的6.83倍,且样品的适用范围广、重复利用率高.

Synthesis and Performance of Magnetic Oil Absorption Material with Rice Chaff Support

A novel magnetic rice chaff oil absorption material was successfully synthesized by immobilizing Fe3O4 nanoparticles onto rice chaff with the aid of mussel-inspired polydopamine and subsequently chemical modification by octadecylamine with low surface energy.Scanning electron microscope (SEM),infrared spectrometer (FTIR) and X-ray diffraction (XRD) instrument were used to characterize the morphology,crystallinity and functional groups of the obtained magnetic rice chaff.The results indicated the magnetic rice chaff had large water contact angle of 135° and magnetic saturation intensity of 39.6 emu/g.The highest oil absorption of magnetic rice chaff reached 6.83 times of its own weight for chloroform.The prepared magnetic rice chaff oil absorption material with high recyclability could be widely used in large-scale removal of spilled oil from water.