Confinedly growing and tailoring of Co3O4 clusters-WS2 nanosheets for highly efficient microwave absorption

• Published in: Nanotechnology Vol. 31; no. 32; pp. 325703 - 325713
• Main Authors: Zhang, Deqing, Liu, Tingting, Zhang, Min, Zhang, Huibin, Yang, Xiuying, Cheng, Junye, Shu, Jincheng, Li, Lin, Cao, Maosheng
• Format: Journal Article
• Language: English
• Published: IOP Publishing 07.08.2020
• Subjects: 2D WS; hetero-structure; magnetic cluster tailoring; microwave absorption; nanoclusters; nanosheets
• ISSN: 0957-4484; 1361-6528; 1361-6528
• DOI: 10.1088/1361-6528/ab8b8d

Electromagnetic (EM) wave absorbing materials have been a research hotspot in materials science and related technical fields in recent years. Finding lightweight, efficient, and broadband electromagnetic wave absorbing materials has always been a very challenging subject. Herein, we successfully prepared Co3O4-WS2 hybrid nanosheets with heterostructures, which excellent combine the advantages of magnetic property of Co3O4 and dielectric property of WS2. By the electromagnetic synergy effect, maximum RL is up to −61.1 dB at 1.9 mm, and the bandwidth exceeds 5 GHz. Such highly efficient microwave absorption is attributed to not only the electromagnetic synergy effect, but the dipole polarization as well as conduction loss. These results show that the obtained Co3O4-WS2 is an excellent EM wave absorbing material and can be used as a candidate for advanced EM wave absorbing materials in the fields such as commerce, military and aerospace in future.