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<p>Air pollution from industrial exhaust and mobile sources continues to threaten human health and ecosystems, creating demand for air-cleaning technologies that operate reliably under elevated temperatures and corrosive environments. Conventional polymer-based filter media often degrade under such conditions, limiting their applicability in industrial exhaust treatment. Electrospun silica nanofiber (SiO<sub>2</sub> NF) membranes and SiO<sub>2</sub>-based ceramic nanofibrous membranes have emerged as robust alternatives because of their thermal stability, chemical resistance, and mechanical durability. Beyond particulate capture, functionalization of SiO<sub>2</sub> NFs through metal-oxide incorporation, MOF-based modification, and surface chemistry tuning enables multifunctional pollutant removal by enhancing adsorption and catalytic conversion of gas-phase species. This mini-review summarizes recent advances in functionalized SiO<sub>2</sub> nanofibrous membranes, with emphasis on structure–property–performance relationships and functionalization strategies for multi-pollutant control. The influence of key operating conditions, including temperature and humidity, on filtration behavior is also discussed. Remaining challenges related to fabrication complexity, performance trade-offs, and long-term stability are highlighted, together with directions for improving scalability and durability. These insights provide a basis for advancing SiO<sub>2</sub> NF membranes toward practical applications in industrial exhaust treatment and indoor air purification.</p> Graphic Abstract <p></p>

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Recent Advances in SiO2 Nanofiber Membranes for High-Efficiency Air Pollutant Removal: A Mini Review

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月6日

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  • Mei-Jou Lu,
  • Chih-Lung Wang,
  • Minh-Ky Nguyen,
  • Van-Nghia Tran,
  • I.-Cheng Li,
  • Hoang-Phuong Nguyen,
  • Minh-Thuan Pham

摘要

Air pollution from industrial exhaust and mobile sources continues to threaten human health and ecosystems, creating demand for air-cleaning technologies that operate reliably under elevated temperatures and corrosive environments. Conventional polymer-based filter media often degrade under such conditions, limiting their applicability in industrial exhaust treatment. Electrospun silica nanofiber (SiO2 NF) membranes and SiO2-based ceramic nanofibrous membranes have emerged as robust alternatives because of their thermal stability, chemical resistance, and mechanical durability. Beyond particulate capture, functionalization of SiO2 NFs through metal-oxide incorporation, MOF-based modification, and surface chemistry tuning enables multifunctional pollutant removal by enhancing adsorption and catalytic conversion of gas-phase species. This mini-review summarizes recent advances in functionalized SiO2 nanofibrous membranes, with emphasis on structure–property–performance relationships and functionalization strategies for multi-pollutant control. The influence of key operating conditions, including temperature and humidity, on filtration behavior is also discussed. Remaining challenges related to fabrication complexity, performance trade-offs, and long-term stability are highlighted, together with directions for improving scalability and durability. These insights provide a basis for advancing SiO2 NF membranes toward practical applications in industrial exhaust treatment and indoor air purification.

Graphic Abstract