ZnO/UV Mediated photocatalytic degradation of Acid Green 16, a commonly used leather dye

Abstract

<span style="font-size: 15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">The photocatalytic degradation of Acid Green 16 has been investigated in the presence of an aqueous suspension of ZnO irradiated with near UV light (254 nm). The influences of irradiation time, initial concentration of the dye, catalyst loading, light intensity, <i style="mso-bidi-font-style:normal">p</i>H, particle size, presence of oxygen, nitrogen, hydrogen peroxide, FeCl₃<span style="font-size:13.0pt;mso-bidi-font-size:6.0pt;font-family:" times="" new="" roman","serif""=""> <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">and Fenton's reagent on the degradation efficiency were systematically studied. The decolourisation and extent of degradation of the dye were determined by UV-Vis spectroscopy and COD reflux methods respectively. Complete mineralisation was confirmed by COD analysis as well as high performance liquid chromatography (HPLC).

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