Cauliflower-like Sb2S3@graphene oxide composite with excellent electromagnetic wave absorption capacity

• Published in: Materials research bulletin 2024-10, Vol.178, p.112912, Article 112912
• Main Authors: Ma, Weihang, Han, Qian, Ren, Qianqian, Zan, Runyu, Wang, Jing, Zhang, Han, Zhu, Hongyang, Zhang, Zhiyong, Zhao, Wu, Wang, Yingnan
• Format: Article
• Language: English
• Subjects: Antimony sulfide; Cauliflower-like structure; Dielectric loss materials; Electromagnetic wave absorption; Graphene oxide
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2024.112912

•Cauliflower-like Sb2S3@graphene oxide composite was successfully prepared by a simple hydrothermal method.•Sb2S3@GO exhibits excellent EMW absorption performance.•The mechanism of EMW absorption was explored by experimental and theoretical study. In this paper, a cauliflower-like Sb2S3@graphene oxide (C-Sb2S3@GO) composite was successfully synthesized using hydrothermal and calcination methods. When the calcination temperature was 550 °C, the filling ratio was 30%, the dosage of PVP was 1.6 g, the maximum effective absorption bandwidth (EAB) was 6.24 GHz at a thickness of 1.65 mm, and the minimum reflection loss (RLmin) reached -61.01 dB (2.15 mm). The experimental results exhibit excellent electromagnetic wave (EMW) properties. The cauliflower-like structure has more microscopic and nanolevel features, which are conducive to multiple reflections and scattering of EMWs. In addition, the combination of C-Sb2S3 with GO imparts rich dipole polarization and interface polarization. These results indicate that the C-Sb2S3@GO composite can be used as a potential candidate for use in efficient and broadband EMW absorbers. The RLmin of Cauliflower-like Sb2S3@GO is -61.01 dB at 2.15 mm, and the EAB is 6.24 GHz at 1.65 mm, respectively. [Display omitted]