
%0 Journal Article
%A Norman, VJ 
%T The effect of illumination on the adsorption of dyes on zinc oxide
%J Australian Journal of Chemistry
%D 1972/06/01
%V 25
%N 6
%P 1189-1193
%K 
%R https://doi.org/10.1071/CH9721189
%U https://www.publish.csiro.au/paper/CH9721189 
%X The adsorption of uranine and rhodamine B, from ethanolic solution, onto high-purity polycrystalline zinc oxide has been determined in the dark, in natural room-light, and under ultraviolet irradiation. It is shown that the amount of uranine chemisorbed in room-light is approximately 60% greater than that chemisorbed in the dark. Ultraviolet irradiation effected a threefold increase in the amount of uranine chemisorbed, with a corresponding decrease in physisorption and total adsorption. The adsorption of rhodamine B, which is exclusively chemisorption, is significantly increased in room-light, and is approximately doubled by ultraviolet irradiation. 
