Collaborative Optimization Design of Self-Powered Sterilizer with Highly Efficient Synergistic Antibacterial Effect

Area of Science:

• Materials Science and Engineering
• Biotechnology
• Nanotechnology

Background:

• Self-powered sterilizers are crucial but require improved sterilization efficiency.
• Breakdown discharge from triboelectric nanogenerators offers potential for sterilization.
• Optimizing energy harvesting and discharge characteristics is key to enhancing performance.

Purpose of the Study:

• To develop a self-powered sterilizer with superior antibacterial capabilities.
• To maximize the utilization of breakdown discharge from a soft-contact freestanding rotary triboelectric nanogenerator (FR-TENG).
• To investigate the synergistic mechanisms underlying the enhanced sterilization effect.

Main Methods:

• Collaborative optimization of FR-TENG structure, double voltage rectification, and gaseous phase manipulation.
• Evaluation of antibacterial rates and bacterial morphologies using microscopic imaging.
• Controlled trials and molecular dynamics simulations to elucidate antibacterial mechanisms.

Main Results:

• Demonstrated superior antibacterial effectiveness against Gram-positive, Gram-negative, and mixed bacteria in natural seawater.
• Identified synergistic sterilization effects from electroporation and reactive oxygen/nitrogen species generation.
• Quantitatively elucidated the combined physical and chemical sterilization mechanisms.

Conclusions:

• The collaborative optimization strategy significantly enhances the sterilization efficiency of self-powered sterilizers.
• The FR-TENG-based sterilizer offers a promising solution for effective, self-powered disinfection.
• This research provides critical insights into the synergistic antibacterial mechanisms for future device development.