Large-Scale Nanofiber Manufacturing| Moisture-Resistant Nanofiber Membrane Loaded with Copper-Manganese-Tin Oxides for Dust and CO Filtration in HighHumidity Environments

Professor Rulin Liu (Shandong University of Science and Technology): Moisture-Resistant Nanofiber Membrane Loaded with Cu-Mn-Sn Oxides for Dual Filtration of Particulates and CO in High-Humidity Environments

Challenge: While electrospinning technology is widely recognized for producing nanofibers with high specific surface area, tunable porosity, and customizable structures, research on multifunctional filtration nanomaterials—particularly those capable of simultaneous particulate matter (PM) filtration and toxic gas removal in high-humidity conditions—remains scarce.

Approach: Professor Rulin Liu's team developed an advanced nanofiber membrane by incorporating tin (Sn) into copper-manganese oxides (CuMnOx) via electrospinning, with optimized NaCl addition to achieve exceptional moisture resistance and breathability.

Innovation 1:
• The SnO₂-doped CuMnOx/PVDF composite membrane demonstrates:

• 99.99% PM filtration efficiency

• 323.68 mm s⁻¹ air permeability

• 92.5% CO catalytic conversion rate

Innovation 2:
• Superhydrophobic properties:

• 116.7° water contact angle

• Negligible water adhesion

• 2035 Pa hydrostatic pressure resistance
  • CFD simulations validate its selective filtration mechanism for CO/PM coexistence scenarios