Abstract
In this work, Ti3C2, which has a loosely packed accordion-like structure in transition metal carbide (MXene) form, is fabricated and adsorbed by three metal ions (Fe3+/Co2+/Ni2+). The electromagnetic interference (EMI) shielding performance of Ti3C2 and Ti3C2:Fe3+/Co2+/Ni2+ films is researched in detail, demonstrating that the EMI shielding effectiveness can be improved by adsorbing by Fe3+/Co2+/Ni2+ ions because the metal ion adsorbing can improve the absorption efficiency via electromagnetic wave scattering. The studied Ti3C2:Fe3+/Co2+/Ni2+ films can be used as good EMI shielding materials for communications, electronics, military, and other applications.
Highlights
Due to the continuous development of science and technology, newer and faster wireless communication networks have been further covering the entire world, and the shrinking of the volume of intelligent electronic devices throughout the world has attracted the attention of people in the field of electromagnetic interference shielding
The results show that the electromagnetic interference (EMI) shielding effectiveness can be improved to different degrees when Ti3 C2 is adsorbed by Fe3+ /Co2+ /Ni2+ ions, and the most obvious effect is observed for Ti3 C2 adsorbing by Fe3+ ions
Parallel and ordered lattice fringes can be observed in the high-resolution transmission electron microscope (HR-TEM) image, revealing the hexagonal symmetric lattice of layered
Summary
Due to the continuous development of science and technology, newer and faster wireless communication networks have been further covering the entire world, and the shrinking of the volume of intelligent electronic devices throughout the world has attracted the attention of people in the field of electromagnetic interference shielding.Because electromagnetic radiation causes harm to the human body and affects the normal use of electronic equipment, and the traditional electromagnetic interference shielding material has difficulty coping with the increasingly sophisticated and miniaturized electronic equipment, the search for new electromagnetic interference shielding materials has become a focus [1–9]. Many articles have studied the electromagnetic shielding effectiveness of some composite materials [10–19]. Studied microcellular polyetherimide/graphene composite foams as heat-resistant electromagnetic shielding materials. Studied single-walled carbon nanotube (SWNT)-polymer composites as excellent lightweight electromagnetic shielding materials. Compared with these polymer materials, research on the electromagnetic shielding effectiveness of two-dimensional materials is limited. We use three different ion solutions with the same concentration to study the electromagnetic shielding effectiveness of MXene films doped with different ions. An MXene is a two-dimensional material obtained by chemically etching the A layer of an MAX phase material [20–25]. The M in the MAX phase generally represents an early transition metal,
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