Enhanced microwave absorption from the magnetic-dielectric interface: A hybrid rGO@Ni-doped-MoS2. (October 2020)

• Record Type: Journal Article
• Authors: Uddin, Waqar; Rehman, Sajid ur; Aslam, Muhammad Adnan; Rehman, Shafiq ur; Wu, Mingzai; Zhu, Manzhou
• Is Part Of: Materials research bulletin. Volume 130(2020)
• Publication Date: 2020-10
• Subjects: Microwave absorption -- Impedance matching -- Reflection loss -- Graphene -- Molybdenum sulfide -- Nickel-Doping; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2020.110943
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: Impedance matching has a key role in strong microwave absorption. To enhance impedance matching, MoS2 related materials are highly essential. Hydrothermal method was used to prepare pristine MoS2 and its related composites. The prepared rGO@Ni-doped-MoS2 achieved maximum microwave absorption of -40 dB at 2 mm thickness. Abstract: Impedance matching has a key role in strong microwave absorption. To achieve the perfect impedance matching and enhanced interface dielectric relaxation, nickel-doped rGO@MoS2 composite has been prepared. The complex permittivity and complex permeability of rGO@Ni-MoS2 show significant improvement by the combination of the high magnetocrystalline anisotropy of Ni metal with highly conductive reduced graphene oxide, leading to remarkable microwave absorption. The prepared rGO@Ni-MoS2 achieved maximum microwave absorption of −40 dB at 2 mm thickness. The control samples of MoS2, Ni-MoS2 and rGO@MoS2 indicate that micro-cluster of MoS2 and Ni doping is indeed helpful to improve the performance of rGO@Ni-MoS2 . The study provides a pathway for practical applications of microwave absorption materials in terms of impedance matching.