Zn还原氧化石墨烯(RGO)及ZnO/RGO自组装复合材料的电磁响应行为学术资讯

《复合材料学报》优先在线发表论文。

摘要：以天然鳞片石墨为原料制备氧化石墨烯（GO），通过Zn将其还原为石墨烯(RGO)，并且生成的ZnO附着在RGO表面。采用XRD、SEM、FTIR、Raman、TEM和矢量网络分析仪（VNA）研究了不同还原温度对所制备的ZnO/RGO复合材料的形貌、结构、氧化程度、电磁损耗特性、德拜弛豫模型及电磁响应行为的影响。结果表明：还原温度为50℃，RGO还原后结构更加完整，层间距为0.89 nm，ZnO/RGO复合材料的介电常数和磁导率均较高，在17.15 GHz达到-41.2 dB，反射损耗小于-10 dB的带宽为3.67 GHz。

关键词：石墨烯，电磁响应行为，氧化石墨烯，自组装，复合材料

Abstract: The graphene oxide (GO) was preparaed by natural flake graphite, then it was reduced to graphene by Zn. ZnO is attached to the surface of graphene. The structure, morphology, degree of oxidation, electromagnetic loss properties and Debye relaxation and microwave absorbing properties of ZnO/RGO composite were investigated by XRD, Raman spectrometer, SEM, TEM, FTIR and Vector network analyzer(VNA). The results show that when the reduction temperature is 50℃ , the structure of graphene is more complete after reduction and the layer spacing is 0.89 nm, the permittivity and permeability of ZnO/RGO composite are higher than graphene oxide. At 17.15 GHz, the reflectivity of ZnO/RGO composite is -41.2 dB, the bandwidth of the reflection loss of ZnO/graphene composite below -10 dB is 3.67 GHz.

Keywords: graphene; electromagnetic response behavior; graphene oxide; self-assembly; composites

作者：马志军等，辽宁工程技术大学矿业学院，辽宁阜新

通讯作者：马志军，辽宁工程技术大学矿业学院，辽宁阜新

全文详见中国知网学术期刊优先数字出版。