"[T]he photoactive component of self-cleaning fabrics can lead to degradation of membranes and cell walls of various microorganisms (e.g., protozoa, bacteria, endospores, fungi, and algae), resulting in their death... Under irradiation, faster inactivation of bacteria typically occurs on the surface of photoactive fabrics compared to the initial textile substrates. ... Typically, degradation of fungi is substantially slower compared to degradation of bacteria due to fungi having a thicker cell wall..."
January 1, 1970
https://en.wikiquote.org/wiki/Titanium_dioxide