Self-​cleaning materials?

Sounds ideal, some­thing that cleans itself! These research­ers have incor­por­ated titanium diox­ide in the plastic arm­rests of garden chairs. When exposed to UV light, they pro­mote the pro­duc­tion of free rad­ic­als, which kill off fungi, bac­teria, etc. Only trouble is, you do need some sun­shine…Read more here.