IJEP 42(4): 399-407 : Vol. 42 Issue. 4 (April 2022)
1. Gauhati University, Department of Chemistry, Guwahati- 781 014, Assam, India
2. Assam Engineering College, Department of Chemistry, Guwahati- 781 013, Assam, India
3. Bhattadev University, Bajali, Pathsala- 781 325, Assam, India
4. Royal Global University, Department of Chemistry, Betkuchi, Guwahati- 781 035, Assam, India
Abstract
Advanced oxidation processes involving the use of H2O2 as the green oxidant in presence of UV light and a catalyst are very effective in the oxidative degradation of water pollutants. Herein a few such processes involving metal (II) isonicotinate tetrahydrates, M(INA)2(H2O)4 (M=Fe, Co, Ni and Cu; INA=isonicotinate anion), as photocatalysts for oxidative degradation of Acid Orange 7 (AO7) and Xylenol Orange (XO) dyes are described. Optimization of parameters, such as initial dye concentration, catalyst dosage, pH and oxidant (H2O2) concentration influencing dye degradation efficiency has been carried out. The metal-organic catalysts being easily isolable and cost-effective complexes showing high degrees of activity in the degradation of the selected dyes, the presently developed method may be viewed as being highly promising. In terms of catalytic efficiency, while Fe(INA)2(H2O)4 is the most effective catalyst for the degradation of XO, Cu(INA)2(H2O)4 is found to be most effective in catalyzing the degradation of AO7.
Keywords
Advanced oxidation process, Photocatalysis, Metal isonicotinate, Dye degradation, Acid Orange 7, Xylenol Orange
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