Related Experiment Video
Updated: Jun 8, 2025
10:23
Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
Published on: November 5, 2015
14.1K
Ultralight SiO2 Nanofiber-Reinforced Graphene Aerogels for Multifunctional Electromagnetic Wave Absorber
Haoyuan Tian1,2, Jingpeng Lin1, Jiurong Liu1
1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, China.
ACS Applied Materials & Interfaces
|November 5, 2024
Summary
Ultralight graphene aerogels reinforced with silicon dioxide nanofibers offer superior electromagnetic wave absorption. These multifunctional materials also exhibit excellent thermal insulation and photothermal properties.
Area of Science:
- Materials Science
- Nanotechnology
- Composite Materials
Background:
- Developing durable, multifunctional electromagnetic wave (EMW) absorbing aerogels using two-dimensional (2D) graphene is challenging.
- High-efficiency utilization of graphene for advanced material applications is in demand.
Purpose of the Study:
- To prepare ultralight, robust, and hydrophobic graphene aerogels with enhanced EMW absorption capabilities.
- To explore the multifunctional properties of these hybrid aerogels.
Main Methods:
- Fabrication of silicon dioxide (SiO2) nanofibers.
- Preparation of graphene aerogels using freeze-drying and carbonization.
- Integration of SiO2 nanofibers with graphene to form 3D hybrid aerogels.
Main Results:
- The hybrid aerogels demonstrated excellent EMW absorption with a minimum reflection loss of -74.5 dB and an effective absorption bandwidth of 5.7 GHz.
- SiO2 nanofibers prevented graphene agglomeration, enhancing mechanical strength and interfacial polarization.
- The aerogels exhibited remarkable photothermal antibacterial, photothermal oil absorption, and thermal insulation.
Conclusions:
- This work presents a novel approach for high-efficiency graphene utilization in ultralight ceramic/graphene aerogels.
- The developed hybrid aerogels show potential for high-performance multifunctional applications beyond EMW absorption.
