College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, PR China.
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, PR China.
J Colloid Interface Sci. 2017 Oct 15;504:479-484. doi: 10.1016/j.jcis.2017.06.004.
The preparation of nanocomposites of reduced graphene oxide with loaded TiO nanoparticles (TRGO) by a facile one-step hydrothermal treatment is reported. We have successfully increased the contact area of TiO and RGO to enhance polarization point, which is in favor of strengthening interfacial polarization. The interfaregioncial polarization has been regarded as an important role on the attenuation of high-frequency electromagnetic waves. Therefore, a good absorber is prepared by inserting the polarization point on the graphene aerogel, which shows excellent electromagnetic wave absorbing properties. In detail, the minimum reflection loss value at 2.1mm is up to -27.2dB for the TRGO-1.5 composite and the frequency bandwidth of 5.2GHz can be obtained. Thus, it demonstrates that the adjustment of interface polarization would play a key role in the microwave-absorbing ability.
通过简便的一步水热法制备了负载 TiO 纳米颗粒的还原氧化石墨烯纳米复合材料（TRGO）。我们成功地增加了 TiO 和 RGO 的接触面积，增强了极化点，这有利于加强界面极化。界面极化被认为是衰减高频电磁波的重要作用。因此，通过在石墨烯气凝胶上插入极化点，制备了一种良好的吸收剂，表现出优异的电磁波吸收性能。具体来说，TRGO-1.5 复合材料在 2.1mm 处的最小反射损耗值高达-27.2dB，可获得 5.2GHz 的频带宽度。因此，这表明界面极化的调整将在微波吸收能力中发挥关键作用。
