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Composite wave-absorbing material based on MXene and metal organic framework as well as preparation method and application of composite wave-absorbing material

A metal-organic framework and composite wave-absorbing material technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of complex preparation process and composition, insufficient electromagnetic wave absorption strength, etc., and achieve the effect of stabilizing microwave absorption performance

Inactive Publication Date: 2021-01-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The composite wave-absorbing material prepared by this patent has complex preparation process and composition. Under the thickness of 3.0mm, the maximum absorption strength is only -39.07dB, which is not enough for electromagnetic wave absorption.

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  • Composite wave-absorbing material based on MXene and metal organic framework as well as preparation method and application of composite wave-absorbing material
  • Composite wave-absorbing material based on MXene and metal organic framework as well as preparation method and application of composite wave-absorbing material
  • Composite wave-absorbing material based on MXene and metal organic framework as well as preparation method and application of composite wave-absorbing material

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Embodiment 1-6

[0035] A composite absorbing material based on MXene and metal organic framework, the composite absorbing material is based on layered nanosheet MXene matrix Ti 3 C 2 Composite with three-dimensional metal-organic framework MOFs material loaded metal nanoparticles and TiO on layered carbon framework 2 Composite materials of nanoparticles. Preferably, the metal element in the three-dimensional metal-organic framework MOFs material is selected from at least one of nickel, iron, cobalt, and manganese. In this embodiment, the three-dimensional metal organic framework MOFs material is Fe-MOFs as an example.

[0036] A preparation method of a composite absorbing material based on MXene and Fe-MOFs is as follows:

[0037] (1) MXene matrix Ti 3 C 2 Preparation of materials:

[0038] Step (1.1), 0.5 gram of Ti 3 AlC 2 Add in 10 ml of concentrated hydrochloric acid solution containing 0.5 g of lithium fluoride, and stir for 5 minutes at a temperature of about 25°C;

[0039] Ste...

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Abstract

The invention discloses a composite wave-absorbing material based on MXene and metal organic framework. The composite wave-absorbing material is characterized in that the composite wave-absorbing material is a composite material which is obtained by loading metal nanoparticles and TiO2 nanoparticles on a layered carbon framework obtained by compounding a layered nanosheet MXene matrix Ti3C2 and athree-dimensional metal organic framework MOFs material. The invention also discloses a preparation method of the composite wave-absorbing material and an application of the composite wave-absorbing material in an electromagnetic wave absorbing material. According to the composite wave-absorbing material based on the MXene and the metal organic framework and the preparation method of the compositewave-absorbing material, the composite wave-absorbing material obtained through an in-situ chemical synthesis method and a heat treatment process has controllable, excellent and stable microwave absorption performance; and when the thickness of a sample is 3.0 mm, the maximum absorption strength can reach -51.8 dB.

Description

technical field [0001] The invention belongs to the technical field of composite wave-absorbing materials, and in particular relates to a composite wave-absorbing material based on MXene and a metal-organic framework, and a preparation method and application thereof. Background technique [0002] The increasing popularity of handheld and wearable devices has aggravated the concealment and harmfulness of electromagnetic radiation on a large scale, directly affecting public health and the normal operation of electronic and telecommunication equipment. Inhibition of electromagnetic radiation damage is a hot research topic. Protect military personnel and weapons from electromagnetic interference in the army and improve combat effectiveness. In the high-tech field, electromagnetic protection plays a vital role in the development of precision instruments. Nowadays, the development of high-performance, lightweight electromagnetic absorption and electromagnetic shielding technolog...

Claims

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Application Information

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IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 陆伟向震邓柏闻刘志成潘飞严海
Owner TONGJI UNIV
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