Synthesis of nitrogen-doped graphene wrapped SnO2 hollow spheres as high-performance microwave absorbers |
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| Authors: | Weiyong Dai Hui Luo Fu Chen Xian Wang Ying Xiong Yongzhi Cheng Rongzhou Gong |
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| Affiliation: | 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, |
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| Abstract: | Nitrogen-doped graphene (NG)/SnO2 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/SnO2 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/SnO2 hollow sphere hybrids with high-performance microwave absorption properties have a promising future in decreasing electromagnetic wave irradiation and interference.Nitrogen-doped graphene/SnO2 hollow sphere hybrids were synthesized and show high-performance microwave absorption properties. |
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