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Various methods for suppressing the membrane fouling have been investigated over the last two decades. For instance, micropatternings including lines, pillars or pyramids on the porous membrane surface as a passive strategy and coating nanoparticles including TiO2, silver and chitosan on the membrane as an active strategy have been verified useful in improving fouling resistance. Here we successfully fabricated biomimeticpatterned ultrafiltration membranes with high pattern fidelity to enhance the fouling resistance. Also, we investigated the synergistic effect of biomimetic patterns and nanoparticles on fouling resistance of our UF membranes. The excellent long-term performance of our nanoparticles containing patterned biomimetic UF membranes in membrane bioreactor further demonstrated its feasibility for ultrafiltration applications.
