木材仿生趋磁性及其超疏水性能

 室温条件下，利用含Fe³⁺和Fe²⁺盐为前体的化学共沉淀法，成功地在木材表面上附着纳米磁性γ-Fe₂O₃颗粒，并经过进一步化学改性后得到超疏水性材料。利用SEM、XRD、VSM及FT-IR等分析技术对样品进行了表征分析。结果显示，磁性粒子的形状类似颗粒状，并均匀地附在木材表面；γ-Fe₂O₃纳米粒子通过氢键作用与木材表面的羟基相互键合而成功附着在木材表面，并且具有良好的晶型，且磁性γ-Fe₂O₃纳米颗粒显示出良好的超顺磁性，经过改性的磁化材料具备很好的超疏水性。

Bionic magnetotaxis of wood and its superhydrophobic properties

The magnetic γ-Fe₂O₃ nanoparticles are successfully deposited on the surface of the wood via a chemical co-precipitation method with Fe³⁺ and Fe²⁺ salts as precursors at the room temperature and with a modification, which show good hydrophobic properties. The scanning electron microscopy(SEM), the X-ray diffraction(XRD), the Fourier transform infrared spectroscopy(FT-IR), and the vibrating sample magnetometer(VSM) are employed to characterize the features of the grown magnetic nanoparticles on the surface of the wood. The SEM images show that the shape of magnetic particles is granular. The XRD spectrum shows that the γ-Fe₂O₃ nanoparticles with good crystalline are successfully grown on the wood surface. The magnetic γ-Fe₂O₃ nanoparticles display good superparamagnetic behavior and are chemically bonded to the bamboo surface through the combination of the hydrogen groups. After modified, the magnetic wood material has good superhydrophobic properties.