The effect of sodium hydroxide in photolytic and photocatalytic degradation of Acid Blue 29 and Ethyl Violet

摘要

The photodegradation of Acid Blue 29 and Ethyl Violet in the presence/absence of sodium hydroxide (NaOH) was investigated.The results show that the dyes degrade efficiently in the presence of 2 M NaOH.The addition of titanium dioxide as a catalyst and hydrogen peroxide as an oxidant,however,does not enhance the degradation rate of the dyes.