Abstract Photocatalytic interactions of a series of arylamines, for example 1, 4- phenylenediamine, 1, 2-phenylenediamine, 4-aminophenol, and 2-aminophenol, at low concentrations in typical primary alcohols have been investigated in the presence of anatase TiO 2 nanopowder. GC–MS analysis of the irradiated solutions showed that, except for 1, 2-phenylenediamine, 10 mmol/l alcoholic solutions of the arylamines gave ...