Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties
Abstract In this study, we report a simple and efficient two-step method consisting of water-in-oil (W/O) emulsion technique and subsequent annealing process for synthesizing the hollow reduced graphene oxide microspheres embedded with Co nanoparticles (Air@rGO€Co). The microspheres showed good elec...
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Nature Portfolio
2017
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oai:doaj.org-article:6f5d89a5b1684952912b4a99a344f1132021-12-02T11:53:02ZSelf-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties10.1038/s41598-017-08293-32045-2322https://doaj.org/article/6f5d89a5b1684952912b4a99a344f1132017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08293-3https://doaj.org/toc/2045-2322Abstract In this study, we report a simple and efficient two-step method consisting of water-in-oil (W/O) emulsion technique and subsequent annealing process for synthesizing the hollow reduced graphene oxide microspheres embedded with Co nanoparticles (Air@rGO€Co). The microspheres showed good electromagnetic properties because of the coexistence of magnetic loss and dielectric loss to microwaves. The minimum reflection loss (RLmin) value of S1.5 reaches −68.1 dB at 13.8 GHz with a thickness of 2.2 mm, and the absorption bandwidth (lower than −10 dB) is 7.1 GHz covering from 10.9 GHz to 18.0 GHz. More interestingly, we can easily controll the microwave absorbing properties of the microspheres by changing the ratio of the two components in the composites. The excellent electromagnetic match at the corresponding resonance peaks for dielectric and magnetic loss play an important role in improving microwave absorption property. Our study provides a good potential method for preparation of lightweight microwave absorbing materials.Qiang ZengPing ChenQi YuHai-rong ChuXu-hai XiongDong-wei XuQi WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017) |
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DOAJ |
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DOAJ |
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EN |
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Medicine R Science Q |
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Medicine R Science Q Qiang Zeng Ping Chen Qi Yu Hai-rong Chu Xu-hai Xiong Dong-wei Xu Qi Wang Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| description |
Abstract In this study, we report a simple and efficient two-step method consisting of water-in-oil (W/O) emulsion technique and subsequent annealing process for synthesizing the hollow reduced graphene oxide microspheres embedded with Co nanoparticles (Air@rGO€Co). The microspheres showed good electromagnetic properties because of the coexistence of magnetic loss and dielectric loss to microwaves. The minimum reflection loss (RLmin) value of S1.5 reaches −68.1 dB at 13.8 GHz with a thickness of 2.2 mm, and the absorption bandwidth (lower than −10 dB) is 7.1 GHz covering from 10.9 GHz to 18.0 GHz. More interestingly, we can easily controll the microwave absorbing properties of the microspheres by changing the ratio of the two components in the composites. The excellent electromagnetic match at the corresponding resonance peaks for dielectric and magnetic loss play an important role in improving microwave absorption property. Our study provides a good potential method for preparation of lightweight microwave absorbing materials. |
| format |
article |
| author |
Qiang Zeng Ping Chen Qi Yu Hai-rong Chu Xu-hai Xiong Dong-wei Xu Qi Wang |
| author_facet |
Qiang Zeng Ping Chen Qi Yu Hai-rong Chu Xu-hai Xiong Dong-wei Xu Qi Wang |
| author_sort |
Qiang Zeng |
| title |
Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| title_short |
Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| title_full |
Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| title_fullStr |
Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| title_full_unstemmed |
Self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| title_sort |
self-assembly of ternary hollow microspheres with strong wideband microwave absorption and controllable microwave absorption properties |
| publisher |
Nature Portfolio |
| publishDate |
2017 |
| url |
https://doaj.org/article/6f5d89a5b1684952912b4a99a344f113 |
| work_keys_str_mv |
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