Abstract
Tetragonal zirconia (t-ZrO2) nanoparticles were successfully prepared by a hydrothermal method and characterized by various measurement techniques. The tetragonal crystalline structure of ZrO2 nanoparticles were confirmed by X-ray diffraction analysis. The binding energies of Zr and O were confirmed from the XPS spectrum. The band gap energy was estimated using optical absorption spectroscopy, found to be 4.8eV. The UV (360nm) and visible (403nm and 537nm) emissions were observed from PL spectrum. The thermal stability of the prepared ZrO2 nanoparticles was studied by TG-DTA analysis. The photocatalytic degradation of the as-prepared ZrO2 nanoparticles was studied under UV light irradiation using methyl orange (MO) as a model organic pollutant. Results showed that 99% degradation was achieved within 50min. Photoelectrochemical studies were also supported the photocatalytic activities.
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