Isocyanate-modified TiO2 visible-light-activated photocatalyst

Abstract. Visible-activated TiO2 photocatalysts were prepared by surface modification to TiO2 with different isocyanates, including conjugated structured Tolylene-2,4-diisocyanate (TDI) and unconjugated structured m-Xylylene diisocyanate (m-XDI). These two isocyanates could be anchored on the TiO2 surface via p-conjugated chemical bonds of –NHCOOTi, which were formed through the reaction …