Developing multifunctional purification systems that combine air filtration and antibacterial functionalityis a challenging task. However, in designing air filtration materials, achieving a balance between filtrationefficiency and pressure drop remains a significant challenge. In this study, we developed anovel filtration material composed of hierarchically 3D Cu-HHTP nanowiskers coated CuO nanowires thatwere grown in-situ on a copper mesh. Benefitted from the intrinsically electrical conductivity of Cu-HHTP, we combined the composite material with external electrical energy for air filtration. By applyinglower electric potential directly (voltage of 5 V), the 3D conductive mesh filter exhibited excellent performancesin terms of the PM2.5 removal efficiency (99.7%), pressure drop (32 Pa at 2 cm s -1), andquality factor (0.187 at 2 cm s -1). Furthermore, after ten cycles of filtration and cleaning, the materialmaintained a high PM removal rate. In addition to its excellent filtration performance, the compositemetal mesh also exhibited outstanding antibacterial activity against both E. coli and S. aureus. Theelectro-mechanical stability and recyclability of the composite filter make it a cost-effective and environmentallyfriendly solution for air purification, with promising potential for improving air quality.