Self-Disinfection and Decontaminating Interior Surfaces Based on Photocatalytic Titania/Easy-Release Coatings
Abstract
We have demonstrated that easy-release qualities imparted by thin methyl-terminated silane coatings, when combined with catalytic disinfection by titanium dioxide particles embedded in or superficially attached to duct-liner fiberglass surfaces and coated fiberglass-based architectural fabrics, can improve the sanitary performance of HVAC air-handling systems. This project evaluated the application of such coatings/particles to duct-wall fiberglass surfaces and coated fibrous glass compositions. The surface modified materials were placed in a HEPA-filtered laboratory air-duct system, infused with calibrated bioaerosols and sampled with surface science methods sufficiently sensitive to determine the additives' efficacies with regard to discouraging bacterial colonization and habitation. Photocatalytic disinfecting and self-cleaning activity, induced by exposure to "black light" (UV-A) illumination, was followed by spectrometry of methylene blue solution bleaching, as well as by infrared and bacterial culture techniques.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2002
- Accession Number
- ADA436021
Entities
People
- Christopher M. Izzo
- Paul J. Nicotera
- Robert E. Baier
Organizations
- University at Buffalo