Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption
In the present paper, a microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance. The inorganic–organic competitive coating strategy was employed, which can effectively adjust the thermodynamic and kinetic reactions of iron ions durin...
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sg-ntu-dr.10356-1646702023-07-14T16:07:47Z Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption Wu, Cao Wang, Jing Zhang, Xiaohang Kang, Lixing Cao, Xun Zhang, Yongyi Niu, Yutao Yu, Yingying Fu, Huili Shen, Zongjie Wu, Kunjie Yong, Zhenzhong Zou, Jingyun Wang, Bin Chen, Zhou Yang, Zhengpeng Li, Qingwen School of Materials Science and Engineering Engineering::Materials Gradient Structures Carbon Nanospheres In the present paper, a microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance. The inorganic–organic competitive coating strategy was employed, which can effectively adjust the thermodynamic and kinetic reactions of iron ions during the solvothermal process. As a result, Fe nanoparticles can be gradually decreased from the inner side to the surface across the hollow carbon shell. The results reveal that it offers an outstanding refection loss value in combination with broadband wave absorption and flexible adjustment ability, which is superior to other relative graded distribution structures and satisfied with the requirements of lightweight equipment. In addition, this work elucidates the intrinsic microwave regulation mechanism of the multiscale hybrid electromagnetic wave absorber. The excellent impedance matching and moderate dielectric parameters are exhibited to be the dominative factors for the promotion of microwave absorption performance of the optimized materials. This strategy to prepare gradient-distributed microwave absorbing materials initiates a new way for designing and fabricating wave absorber with excellent impedance matching property in practical applications. Published version The authors appreciate the financial subsidization of the National Natural Science Foundation of China (52102372, 52162007, 52163032), China Postdoctoral Science Foundation (2022M712321), and the Jiangsu Province Postdoctoral Research Funding Program (2021K473C). Open access funding provided by Shanghai Jiao Tong University. 2023-02-08T02:07:29Z 2023-02-08T02:07:29Z 2022 Journal Article Wu, C., Wang, J., Zhang, X., Kang, L., Cao, X., Zhang, Y., Niu, Y., Yu, Y., Fu, H., Shen, Z., Wu, K., Yong, Z., Zou, J., Wang, B., Chen, Z., Yang, Z. & Li, Q. (2022). Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption. Nano-Micro Letters, 15(1). https://dx.doi.org/10.1007/s40820-022-00963-w 2311-6706 https://hdl.handle.net/10356/164670 10.1007/s40820-022-00963-w 36472674 2-s2.0-85143296304 1 15 en Nano-Micro letters © The Author(s) 2022. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. application/pdf |
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Engineering::Materials Gradient Structures Carbon Nanospheres Wu, Cao Wang, Jing Zhang, Xiaohang Kang, Lixing Cao, Xun Zhang, Yongyi Niu, Yutao Yu, Yingying Fu, Huili Shen, Zongjie Wu, Kunjie Yong, Zhenzhong Zou, Jingyun Wang, Bin Chen, Zhou Yang, Zhengpeng Li, Qingwen Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
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In the present paper, a microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance. The inorganic–organic competitive coating strategy was employed, which can effectively adjust the thermodynamic and kinetic reactions of iron ions during the solvothermal process. As a result, Fe nanoparticles can be gradually decreased from the inner side to the surface across the hollow carbon shell. The results reveal that it offers an outstanding refection loss value in combination with broadband wave absorption and flexible adjustment ability, which is superior to other relative graded distribution structures and satisfied with the requirements of lightweight equipment. In addition, this work elucidates the intrinsic microwave regulation mechanism of the multiscale hybrid electromagnetic wave absorber. The excellent impedance matching and moderate dielectric parameters are exhibited to be the dominative factors for the promotion of microwave absorption performance of the optimized materials. This strategy to prepare gradient-distributed microwave absorbing materials initiates a new way for designing and fabricating wave absorber with excellent impedance matching property in practical applications. |
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School of Materials Science and Engineering |
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School of Materials Science and Engineering Wu, Cao Wang, Jing Zhang, Xiaohang Kang, Lixing Cao, Xun Zhang, Yongyi Niu, Yutao Yu, Yingying Fu, Huili Shen, Zongjie Wu, Kunjie Yong, Zhenzhong Zou, Jingyun Wang, Bin Chen, Zhou Yang, Zhengpeng Li, Qingwen |
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Article |
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Wu, Cao Wang, Jing Zhang, Xiaohang Kang, Lixing Cao, Xun Zhang, Yongyi Niu, Yutao Yu, Yingying Fu, Huili Shen, Zongjie Wu, Kunjie Yong, Zhenzhong Zou, Jingyun Wang, Bin Chen, Zhou Yang, Zhengpeng Li, Qingwen |
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Wu, Cao |
title |
Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
title_short |
Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
title_full |
Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
title_fullStr |
Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
title_full_unstemmed |
Hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
title_sort |
hollow gradient‑structured iron‑anchored carbon nanospheres for enhanced electromagnetic wave absorption |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/164670 |
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1773551222690676736 |