Bacterial infections pose a significant global threat, especially with the increasing prevalence of antibiotic resistance and multidrug resistance (MDR). To address this challenge, dynamic antibacterial therapies are becoming increasingly important, with piezodynamic therapy emerging as a particularly promising approach due to its non-invasive nature and quick response using mechanical stimuli to target bacterial contaminations. This study, probably for the first-time, introduced an advanced piezo-active membrane, ZrO2 nanoparticle-loaded chitosan biopolymer (ZO@CHS), which utilized piezodynamic therapy to combat both Gram-positive (E. faecalis) and Gram-negative (E. coli) coliform bacteria. By combining the biocompatibility of chitosan with the enhanced physiochemical properties of ZrO2, this self-supporting and non-toxic highly polarized bio-nanocomposite (ZO@CHS) membrane generated a significant piezo-voltage of 4.47 V upon finger tapping and promoted cellular adhesion while enhancing reactive radicals’ production under mild ultrasound (∼15 kHz), eliminating over 96 % of E. coli and 97 % E. faecalis within just 20 minutes, which corroborated well with the statistical analysis. Detailed study, including reactive oxygen species (ROS) assessment through Photoluminescence spectroscopy and bacterial FESEM examination, provided insights into the underlying mechanism. Additionally, the membrane’s robust structure and hydrophobic properties allow for cyclic reuse, retaining over 95 % effectiveness after five cycles. Furthermore, the superior biocompatibility of the membrane, evidenced by a minimal haemolysis rate of 0.11 %, making it suitable for potential in vivo applications. Thus, this novel membrane presented promising applications in healthcare systems and pigment industries, serving as a self-cleaning material.
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