Open AccessPHOTODEGRADATION OF DIRECT YELLOW 50 DYE USING THE PHOTOCATALYST ZINC OXIDES UNDER ULTRA-VIOLET LIGHT
Author(s) -
Souad A. Mousa
Publication year - 2017
Publication title -
international journal of research - granthaalayah
Language(s) - English
Resource type - Journals
eISSN - 2394-3629
pISSN - 2350-0530
DOI - 10.29121/granthaalayah.v5.i4.2017.1811
Subject(s) - photodegradation , photocatalysis , photochemistry , zinc , methyl violet , catalysis , chemistry , conduction band , materials science , nuclear chemistry , electron , organic chemistry , physics , adsorption , quantum mechanics
In this research photodegradation of direct yellow dye using zinc oxide as catalyst under ultra-violet light has been investigated. The concentration of photocatalyst has been found to be 0.003 M, while the results reveal that, the best H2O2 concentration can be used as 10 ml, furthermore, pH to run the reaction of photodegradation was observed at acidic media. It has been found that the direct yellow dye can be oxidized by positive hole or hydroxyl radical or reduced by electron in the conduction band, the cleavage of N=N leads to break down the dye.