Three-dimensional biotemplate-loaded nickel sulfide vacancies engineered to promote the absorption of electromagnetic waves
文献类型： 外文期刊
作者： Zhu, Wenrui 1 ; Wang, Dashuang 1 ; Du, Zhilan 1 ; Liao, Yan 1 ; Zhang, Kai 3 ; Xie, Shuai 4 ; Dong, Wenxin 5 ; Rao, Jinsong 1 ; Zhang, Yuxin 1 ; Liu, Xiaoyin 2 ;
作者机构： 1.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
2.Army Logist Acad PLA, Chongqing 401331, Peoples R China
3.Chongqing Acad Agr Sci, Res Inst Agr Engn, Chongqing 401329, Peoples R China
4.China Bldg Mat Acad, State Key Lab Green Bldg Mat, Beijing 100024, Peoples R China
5.Chongqing Univ, Sch Resources & Safety Engn, Chongqing, Peoples R China
期刊名称：NANOSCALE （ 影响因子：5.8； 五年影响因子：6.1 ）
ISSN： 2040-3364
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Vacancy engineering offers an appealing strategy for modifying the electronic structure of transition metals. Transition metals with abundant sulfur vacancies can significantly contribute to the microwave absorption capabilities of absorbers. In this study, an NixSy@De composite material was synthesized through a straightforward hydrothermal synthesis technique. The effective absorption bandwidth (EAB) of this composite material reached 9.86 GHz at 1.44 mm. A minimum reflection loss (RLmin) of -33.61 dB at 1 mm was achieved, and after mild etching, the RLmin further improved to -93.53 dB at 1.16 mm to achieve a high-attenuation microwave absorption. The exceptional performance of NixSy@De for the absorption of electromagnetic waves (EMWs) is based on its high dielectric loss, substantial magnetic loss, and excellent impedance matching. This work combines transition metal sulfides with three-dimensional biotemplated diatomite, providing valuable insights into the design of advanced EMW absorbing materials. A simple hydrothermal method is used to realize the electromagnetic application of three-dimensional bio-template diatomite. The samples show excellent electromagnetic wave absorption properties after sulfurization, with an EAB of 9.86 GHz at a thickness of 1.44 mm. RLmin reaches -33.61 dB at 1 mm.
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