Photo De-colorization of Cibacron Brilliant Yellow Dye Using ZnO Photo Catalyst under Sunlight

Byrappa K

doi:10.31031/pps.2018.01.000505

Abstract

Progress in Petrochemical Science Photo De-colorization of Cibacron Brilliant Yellow Dye Using ZnO Photo Catalyst under Sunlight Namratha K1,2, Byrappa K1,2* and Deepthi BK1,2 1DOS in Earth Science Manasagangothri, University of Mysore, India 2Center for Material Science and Technology, University of Mysore, India *Corresponding author: K Byrappa, Center for Materials Science and Technology, University of Mysore, Vijnan Bhavan, P.B. No. 21, Manasagangothri, Mysore-570006, India Submission: January 25, 2018; Published: February 23, 2018 DOI: 10.31031/PPS.2018.01.000505 ISSN 2637-8035Volume1 Issue1

Highlights

In recent years the use of semiconductors (SC) for decolorization of organic dyes which is referred to as heterogeneousPhoto-catalysis process has attracted many researchers because of their ability to oxidize these dye stuffs into simpler mineralization products [1,2]
In the first path way a semiconductor is illuminated with light source of energy greater than or equal to its band gap which results in excitation of electron from valence band to conduction band (Eq 1.1) leaving behind a positive hole in the valence band, where in these generated charge carriers migrate to the surface of the catalyst and initiate redox reaction [3,4] which result in production of reactive oxygen species as positive hole oxidize the water at the surface to form hydroxyl radical (Eq 1.2) and electron in the conduction band is trapped by molecular oxygen which is reduced to form superoxide radical (Eq 1.3)
In order to study the effect of catalyst loading rate, zinc oxide (ZnO) dosage was varied from 0.1g, 0.2g, 0.3g, 0.4g to 0.5g keeping dye concentration constant at 12ppm for time duration of about 180 minutes (Figure 2-6)

Summary

Introduction

In recent years the use of semiconductors (SC) for decolorization of organic dyes which is referred to as heterogeneous. 3.3ev and electron hole recombination [9], its ability to absorb a small fraction of (

Results

Conclusion