Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption
Developing low density and efficient dielectric loss materials has become a research hotspot, which can greatly meet the demands of modern radars and settle the problem of electromagnetic wave pollution. Herein, a series of N-doped ordered mesoporous carbon (OMC) materials with different nitrogen co...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Materiomics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847823001053 |
| _version_ | 1797351568013524992 |
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| author | Panpan Zhou Jing Zhang Zhi Song Yawei Kuang Yushen Liu Lixi Wang Qitu Zhang |
| author_facet | Panpan Zhou Jing Zhang Zhi Song Yawei Kuang Yushen Liu Lixi Wang Qitu Zhang |
| author_sort | Panpan Zhou |
| collection | DOAJ |
| description | Developing low density and efficient dielectric loss materials has become a research hotspot, which can greatly meet the demands of modern radars and settle the problem of electromagnetic wave pollution. Herein, a series of N-doped ordered mesoporous carbon (OMC) materials with different nitrogen content were prepared via a modified self-assembly method and defect engineering in subsequent calcination treatment. It was discovered that the content and type of nitrogen doping can be effectively modulated by the amount of precursor dicyandiamide, resulting in the changes in porous structure, carbon defects, electromagnetic properties, microwave absorption (MA) performance and radar cross section (RCS) reduction values. Remarkably, as-fabricated OMC/N2.5 displays ideal MA performance, whose minimum reflection loss (RL(min)) value reaches −35.3 dB at 7.76 GHz (3.0 mm) and its effective absorption bandwidth reaches 3.52 GHz (10.64–14.16 GHz, 2.0 mm). Furthermore, the optimal RCS reduction values can be obtained as 12.01 dB·m2 when the detection theta is 30°, which validly reduces the chances of being detected by radar. Thus, this work opens up a novel way for the development of lightweight and high-efficiency MA materials. |
| first_indexed | 2024-03-08T13:02:21Z |
| format | Article |
| id | doaj.art-8d0f0349a8b3428a85a0c5985b5c4abf |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-08T13:02:21Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-8d0f0349a8b3428a85a0c5985b5c4abf2024-01-19T04:59:09ZengElsevierJournal of Materiomics2352-84782024-01-01101190199Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorptionPanpan Zhou0Jing Zhang1Zhi Song2Yawei Kuang3Yushen Liu4Lixi Wang5Qitu Zhang6School of Electronic and Information Engineering, Changshu Institute of Technology, Changshu, 215500, China; College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China; China Geological Survey, Nanjing Center, Nanjing, 210016, China; Supervision and Testing Center of East China, Mineral Resources of the Ministry of Land and Resources, Nanjing, 210016, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, ChinaSchool of Electronic and Information Engineering, Changshu Institute of Technology, Changshu, 215500, ChinaSchool of Electronic and Information Engineering, Changshu Institute of Technology, Changshu, 215500, China; Corresponding author.College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China; Corresponding author.College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China; Corresponding author.Developing low density and efficient dielectric loss materials has become a research hotspot, which can greatly meet the demands of modern radars and settle the problem of electromagnetic wave pollution. Herein, a series of N-doped ordered mesoporous carbon (OMC) materials with different nitrogen content were prepared via a modified self-assembly method and defect engineering in subsequent calcination treatment. It was discovered that the content and type of nitrogen doping can be effectively modulated by the amount of precursor dicyandiamide, resulting in the changes in porous structure, carbon defects, electromagnetic properties, microwave absorption (MA) performance and radar cross section (RCS) reduction values. Remarkably, as-fabricated OMC/N2.5 displays ideal MA performance, whose minimum reflection loss (RL(min)) value reaches −35.3 dB at 7.76 GHz (3.0 mm) and its effective absorption bandwidth reaches 3.52 GHz (10.64–14.16 GHz, 2.0 mm). Furthermore, the optimal RCS reduction values can be obtained as 12.01 dB·m2 when the detection theta is 30°, which validly reduces the chances of being detected by radar. Thus, this work opens up a novel way for the development of lightweight and high-efficiency MA materials.http://www.sciencedirect.com/science/article/pii/S2352847823001053OMCN-dopedDefect engineeringRCS simulationMicrowave absorption |
| spellingShingle | Panpan Zhou Jing Zhang Zhi Song Yawei Kuang Yushen Liu Lixi Wang Qitu Zhang Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption Journal of Materiomics OMC N-doped Defect engineering RCS simulation Microwave absorption |
| title | Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption |
| title_full | Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption |
| title_fullStr | Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption |
| title_full_unstemmed | Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption |
| title_short | Defect engineering in N-doped OMC for lightweight and high-efficiency electromagnetic wave absorption |
| title_sort | defect engineering in n doped omc for lightweight and high efficiency electromagnetic wave absorption |
| topic | OMC N-doped Defect engineering RCS simulation Microwave absorption |
| url | http://www.sciencedirect.com/science/article/pii/S2352847823001053 |
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