• Yogeshwar Digambar Kaldante
• Ramesh Natha Shirsat
• Manohar Ganpat Chaskar
• Ratnamala Tanaji More
• Sunil Ramrao Mirgane

Present work confers synthesis of ZnO NPs by precipitation method, its characterization and photocatalytic study. Preparation of ZnO NPs involves two steps viz. zinc hydroxide precursor formation followed by its calcination. The suitable calcination temperature for getting ZnO from zinc hydroxide precursor was gained by TG-DTA and FT-IR Spectroscopic study; XRD data of this ZnO sample clearly confirmed hexagonal wurtzite crystallite structure. FESEM photographic image of this ZnO confirmed nanocrystalline hexagonal morphology of particles. EDX spectrum of ZnO supports its chemical purity. The optical properties of ZnO were studied with UV-Visible spectrum. Photocatalytic activity of this ZnO NPs was elaborated with degradation of o-nitro phenol with reference to various operating factors like substrate concentration, initial pH of the substrate solution, loading of ZnO, and irradiation time.

ZnO, Precipitation, o-nitro phenol, Photocatalytic activity

"Photocatalytic degradation of o-nitro phenol over ZnO nanoparticles synthesized by precipitation method ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 6, page no.a481-a489, June-2024, Available :http://www.jetir.org/papers/JETIR2406059.pdf

"Photocatalytic degradation of o-nitro phenol over ZnO nanoparticles synthesized by precipitation method ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 6, page no. ppa481-a489, June-2024, Available at : http://www.jetir.org/papers/JETIR2406059.pdf