添加剂对酸性橙7水溶液光褪色的影响

Effects of additives on photofading of Acid Orange 7 in aqueous solution

本文研究了添加剂对酸性染料酸性橙７水溶液光褪色的影响．二氨基蒽醌一般能抑制褪色，这是由于二氨基蒽醌对水中生成的单线态氧产生湮灭作用；环糊精抑制褪色，是由于其包接作用使染料的偶氮基团被保护起来；二氧化钛能显著促进光褪色，是由于它的光催化作用．

This paper investigated the effects of additives on the photofading of Acid Orange 7 in aqueous solution.The fading was retarded in the presence of diaminoanthraquinones which can quench the singlet oxygen in water.The degree of retardation depends on the positions of the amino groups.Cyclodextrins were also found to retard the fading,because of the azo groups of the dye are surrounded with it.Titanium dioxides greatly accelerate the photofading of the dye due to its catalysis.