Author : A .Drea, Abbas
journal of kerbala university,
Volume 4, Issue 1, Pages 106-112
Photocatalytic degradation of salicylic acid over suspended zinc oxide ,and its sensitized with riboflavin has been done in this work . Irradiation of reaction mixture carried out by sunlight ,and ultraviolet light from mercury vapor lamp. the reaction was followed spectrophotometrically by Infrared ,and ultraviolet-Visible spectrophotometer .The remaining quantity of the acid was determined by spectrophotometric method ,by using a suitable calibration curve .The calibration curve was obtained by using a standard solutions of the acid ,the absorbance is measured at 320 nm .the investigated result showed that, sensitized zinc oxide was more active than its naked for in this reaction . under irradiation with sunlight and using RF/ZnO ,The represented result of the reaction was more active according to activation energy equal to 30.88 kJ mol-1 respective than naked ZnO under the same conditions of reaction.