• MS. S. Pooranalakshmi
• C.Gowri Shankari

In this review, we examine the photo catalytic degradation of organic dye pollutants in the presence of nanocatalyst. Green synthesis has now become a vast developing area in research .Degradation of Methyl Orange (MO) and Rhodamine B (RhB) dyes were studied under UV-Vis irradiation using a simple and eco-friendly green synthesized Zirconium oxide (ZrO2) nanocatalyst under direct exposure of sunlight. ZrO2 nanocatalyst was prepared by green method using Gossypium herbaceum (cotton plant) flower extract which act as reducing agent. The synthesized nanocatalyst was characterized by UV-vis, FT-IR, X-ray diffraction and SEM. The comparison study of photo catalytic degradation of dyes were carried out using UV-Visible radiation and the photo catalytic activity were found to be 88.89%, 85.9% for Methyl Orange (MO) and Rhodamine B dyes respectively after 30 minutes duration. The report emphasizes that the ZrO2 nanocatalyst are observed to be an excellent on reduction of hazardous dyes, which is confirmed by a decrease in absorbance maximum values.

Green synthesis, Gossypium herbaceum, Zirconium Oxide (ZrO2) nano particle, Photo catalytic degradation, Methylene Orange (MO) and Rhodamine B (RhB).

"Photo degradation of Methyl Orange & Rhodamine B Dyes Using Green Synthesized ZrO2 Nanocatalyst", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 2, page no.322-328, February-2020, Available :http://www.jetir.org/papers/JETIR2002051.pdf

"Photo degradation of Methyl Orange & Rhodamine B Dyes Using Green Synthesized ZrO2 Nanocatalyst", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 2, page no. pp322-328, February-2020, Available at : http://www.jetir.org/papers/JETIR2002051.pdf