Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption
To develop high-performance microwave absorption materials with the features of lightweight, thin thickness, broad bandwidth, and strong absorption, an ultralight Ni<sub>3</sub>S<sub>2</sub>@N, S-codoped graphene aerogel with a density of 13.5 mg/cm<sup>3</sup> ha...
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MDPI AG
2022-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/4/655 |
| _version_ | 1827653419960107008 |
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| author | Wenjing Yu Bo Liu Xiaojiao Zhao |
| author_facet | Wenjing Yu Bo Liu Xiaojiao Zhao |
| author_sort | Wenjing Yu |
| collection | DOAJ |
| description | To develop high-performance microwave absorption materials with the features of lightweight, thin thickness, broad bandwidth, and strong absorption, an ultralight Ni<sub>3</sub>S<sub>2</sub>@N, S-codoped graphene aerogel with a density of 13.5 mg/cm<sup>3</sup> has been fabricated by the use of metal-organic frameworks (MOFs) to directly initiate the gelation of graphene oxide strategy. In such a strategy, dual-functional 1D Ni-MOF nanorods not only act as the gelation agent but also afford the doping elements (N and S) originated from the organic species and the precursor for metal sulfide. Due to the synergistic effects of good impedance matching and multiple losses, the optimal reflection loss (RL) of as-prepared Ni<sub>3</sub>S<sub>2</sub>@N, S-codoped graphene aerogel reaches −46.9 dB at 17.1 GHz with only 2.0 mm and ultralow filling content (1.75 wt%). The maximum effective absorption bandwidth (EAB) reaches 6.3 GHz (11.7–18.0 GHz) at 2.38 mm, covering the whole Ku band. Moreover, the value of EAB with the RL less than −30 dB can be tuned to 12.2 GHz (5.8–18 GHz) at the absorber thickness ranging from 1.9 to 5.0 mm. This work provides insight for rational design and fabrication of multicomponent-containing graphene aerogels, showing the potential application in lightweight and high-performance microwave absorption. |
| first_indexed | 2024-03-09T21:18:38Z |
| format | Article |
| id | doaj.art-306b5cd9c5c34aa6a63c4f3245df4b0b |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T21:18:38Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-306b5cd9c5c34aa6a63c4f3245df4b0b2023-11-23T21:25:59ZengMDPI AGNanomaterials2079-49912022-02-0112465510.3390/nano12040655Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave AbsorptionWenjing Yu0Bo Liu1Xiaojiao Zhao2School of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213001, ChinaSchool of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213001, ChinaHebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, ChinaTo develop high-performance microwave absorption materials with the features of lightweight, thin thickness, broad bandwidth, and strong absorption, an ultralight Ni<sub>3</sub>S<sub>2</sub>@N, S-codoped graphene aerogel with a density of 13.5 mg/cm<sup>3</sup> has been fabricated by the use of metal-organic frameworks (MOFs) to directly initiate the gelation of graphene oxide strategy. In such a strategy, dual-functional 1D Ni-MOF nanorods not only act as the gelation agent but also afford the doping elements (N and S) originated from the organic species and the precursor for metal sulfide. Due to the synergistic effects of good impedance matching and multiple losses, the optimal reflection loss (RL) of as-prepared Ni<sub>3</sub>S<sub>2</sub>@N, S-codoped graphene aerogel reaches −46.9 dB at 17.1 GHz with only 2.0 mm and ultralow filling content (1.75 wt%). The maximum effective absorption bandwidth (EAB) reaches 6.3 GHz (11.7–18.0 GHz) at 2.38 mm, covering the whole Ku band. Moreover, the value of EAB with the RL less than −30 dB can be tuned to 12.2 GHz (5.8–18 GHz) at the absorber thickness ranging from 1.9 to 5.0 mm. This work provides insight for rational design and fabrication of multicomponent-containing graphene aerogels, showing the potential application in lightweight and high-performance microwave absorption.https://www.mdpi.com/2079-4991/12/4/655graphene aerogelsNi-MOFNi<sub>3</sub>S<sub>2</sub>microwave absorption |
| spellingShingle | Wenjing Yu Bo Liu Xiaojiao Zhao Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption Nanomaterials graphene aerogels Ni-MOF Ni<sub>3</sub>S<sub>2</sub> microwave absorption |
| title | Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption |
| title_full | Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption |
| title_fullStr | Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption |
| title_full_unstemmed | Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption |
| title_short | Ultralight MOF-Derived Ni<sub>3</sub>S<sub>2</sub>@N, S-Codoped Graphene Aerogels for High-Performance Microwave Absorption |
| title_sort | ultralight mof derived ni sub 3 sub s sub 2 sub n s codoped graphene aerogels for high performance microwave absorption |
| topic | graphene aerogels Ni-MOF Ni<sub>3</sub>S<sub>2</sub> microwave absorption |
| url | https://www.mdpi.com/2079-4991/12/4/655 |
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