氮掺杂石墨烯包裹的SnO空心球作为高性能微波吸收剂的合成
Synthesis of nitrogen-doped graphene wrapped SnO hollow spheres as high-performance microwave absorbers.
作者信息
Dai Weiyong, Luo Hui, Chen Fu, Wang Xian, Xiong Ying, Cheng Yongzhi, Gong Rongzhou
机构信息
School of Optical and Electronic Information, Huazhong University of Science and Technology Wuhan 430074 People's Republic of China.
School of Information Science and Engineering, Wuhan University of Science and Technology Wuhan 430081 People's Republic of China
出版信息
RSC Adv. 2019 Apr 5;9(19):10745-10753. doi: 10.1039/c9ra01556f. eCollection 2019 Apr 3.
Nitrogen-doped graphene (NG)/SnO hollow sphere hybrids were synthesized in this work. The chemical composition, crystal structure and morphology have been characterized by FT-IR spectra, XRD, Raman spectra, XPS, SEM and TEM in detail. Reflection loss (RL) values of NG/SnO hollow sphere hybrids less than -10 dB and -20 dB are found in the wide frequency range of 4.5-18 GHz and 5-16.2 GHz within 1.3-3.5 mm, and a minimum RL of -50.3 dB is achieved at 8.6 GHz with the matching thickness of only 2.3 mm. The results indicate that the NG/SnO hollow sphere hybrids with high-performance microwave absorption properties have a promising future in decreasing electromagnetic wave irradiation and interference.
本工作合成了氮掺杂石墨烯（NG）/SnO空心球杂化材料。通过傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、拉曼光谱、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对其化学成分、晶体结构和形貌进行了详细表征。在1.3 - 3.5 mm厚度下，NG/SnO空心球杂化材料在4.5 - 18 GHz和5 - 16.2 GHz的宽频率范围内反射损耗（RL）值小于-10 dB和-20 dB，在8.6 GHz时实现了-50.3 dB的最小RL值，匹配厚度仅为2.3 mm。结果表明，具有高性能微波吸收特性的NG/SnO空心球杂化材料在降低电磁波辐射和干扰方面具有广阔的应用前景。
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