Self-cleaning photocatalytic nanostructured oxide coatings

Overview

This solution offers engineered nanostructured coatings based on metal oxides such as TiO2, ZnO, and their hybrid combinations. Applied as surface treatments, these coatings deliver photocatalytic self-cleaning and antimicrobial performance under near-UV and visible light, including room light and sunlight. When activated, the coatings release reactive radicals that degrade organic molecules and deactivate bacteria, supporting disinfection and surface decontamination in a wide range of environments.

The technology addresses growing demand for passive, light-activated hygiene and cleanliness solutions in sectors such as healthcare, public infrastructure, food processing, and consumer products. By tuning the nanostructure, thickness, and composition, the coatings can be customized to balance transparency, porosity, durability, and antimicrobial strength depending on the target application.

Technical specifications

Core technology:

• Nanostructured oxide coatings fabricated from solution-based processing of TiO2, ZnO, and hybrid oxide systems
• Photocatalytic activity driven by light-activated generation of reactive radicals that degrade organic contaminants and deactivate bacteria
• Antimicrobial functionality validated under both light and dark conditions

Tunable parameters:

• Microstructure and thickness controlled by precursor solution conditions, enabling dense to porous layer architectures
• Surface doping schemes to further tune functional responses and extend activity into the visible light range
• Process variables including temperature, concentration, pH, pressure, and complexing agents used to optimize nucleation, growth, and aggregation behavior of nanoparticles

Characterization performed:

• Electron microscopy analysis (SEM, TEM) to confirm nanostructure morphology
• Antibacterial performance testing under illuminated and dark conditions

Technology readiness level

The coatings have been demonstrated at the laboratory scale, with nanostructures prepared from a range of solution processing conditions and characterized for morphology and antibacterial response. Applied research projects are planned to advance the technology readiness level, including development of scalable application methods, production scale-up, improved coating robustness and wear resistance, and expanded photocatalytic and antimicrobial/antiviral testing against industry standards. The technology is positioned for collaborative development with industry partners to accelerate validation and commercialization.