Broadband nanoengineered nitrogen-doped titania photocatalysts for antimicrobial disinfection

Overview

This solution introduces a novel class of broadband nanoengineered titania photocatalysts designed for efficient antimicrobial disinfection under visible light. By incorporating nitrogen dopants into the titania lattice, the technology stabilizes oxygen vacancies during reductive annealing, reducing defective catalytic sites and significantly improving long-wavelength photocatalytic activity. The result is enhanced generation of reactive oxygen species (ROS) that damage pathogen cell walls, offering a promising route to reliable, light-activated disinfection for surfaces and air.

Technical specifications

• Nitrogen-doped titania nanoparticles that stabilize the crystal lattice during reductive annealing, minimizing defective catalytic sites
• Broadband visible-light activation across the 420–720 nm range, enabling disinfection under standard white light sources
• Enhanced ROS generation driven by improved structural and optoelectronic properties of the engineered material
• Spray-coatable formulations under development for practical surface disinfection applications
• Machine learning models being developed to accelerate design, performance prediction, and formulation optimization
• Validated antibiofilm performance showing a five-fold improvement over undoped titania under white light illumination

Technology readiness level

The technology is at an early-to-mid stage of development. Preliminary antibacterial and antibiofilm studies have demonstrated a five-fold improvement in disinfection efficiency compared to undoped titania. Ongoing work focuses on scaling synthesis procedures, developing machine learning-guided design tools, creating spray-coating formulations, and evaluating efficacy against model airborne viruses to enable translation to real-world disinfection applications.