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<p>With the widespread adoption of 5G communication and electronic devices, electromagnetic pollution has become a serious environmental issue. Traditional electromagnetic wave-absorbing materials face environmental challenges such as non-degradability, difficult recycling, and high energy consumption during production. This study proposes an innovative solution in line with the concept of clean production: converting bamboo processing waste into high-performance electromagnetic wave-absorbing (EMWA) materials. Through a mild hydrothermal method, Fe<sub>3</sub>O<sub>4</sub> nanoparticles are grown in situ in the multilevel pores of bamboo, successfully preparing a lightweight, degradable, and magnetic Fe<sub>3</sub>O<sub>4</sub>/bamboo composite material. This material exhibits excellent EMW performance within the frequency range of 2–18&#xa0;GHz, with a minimum reflection loss of −&#xa0;63.33&#xa0;dB, and the effective absorption bandwidth covers 2.63&#xa0;GHz. Furthermore, the application of the composite materials prepared in this study in the aerospace industry was explored through simulation software. By manifesting a “waste-to-wealth” transition, this study paves the way for advanced electromagnetic protection solutions that strictly adhere to the global mandates of clean production and long-term sustainability.</p>

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Synergistic integration of spherical Fe3O4 nanoparticles and bamboo-sourced carbon surface for highly efficient microwave absorption via interfacial optimization

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Xinxiu Cao,
  • Jiateng Chen,
  • Xiaowei Kang,
  • Tiancheng Yuan,
  • Yanjun Li,
  • Minzhen Bao,
  • Yu Wang

摘要

With the widespread adoption of 5G communication and electronic devices, electromagnetic pollution has become a serious environmental issue. Traditional electromagnetic wave-absorbing materials face environmental challenges such as non-degradability, difficult recycling, and high energy consumption during production. This study proposes an innovative solution in line with the concept of clean production: converting bamboo processing waste into high-performance electromagnetic wave-absorbing (EMWA) materials. Through a mild hydrothermal method, Fe3O4 nanoparticles are grown in situ in the multilevel pores of bamboo, successfully preparing a lightweight, degradable, and magnetic Fe3O4/bamboo composite material. This material exhibits excellent EMW performance within the frequency range of 2–18 GHz, with a minimum reflection loss of − 63.33 dB, and the effective absorption bandwidth covers 2.63 GHz. Furthermore, the application of the composite materials prepared in this study in the aerospace industry was explored through simulation software. By manifesting a “waste-to-wealth” transition, this study paves the way for advanced electromagnetic protection solutions that strictly adhere to the global mandates of clean production and long-term sustainability.