Abstract
Zirconia nanoparticles (ZrO2-NPs) of size ∼10nm have been synthesized using hydrothermal method. ZrO2-NPs annealed at high temperature (400–850°C) exhibits a better crystallinity along with phase transformation. The PL intensity of ZrO2-NPs found to be annealing temperature dependent due to the change in crystallinity and surface defects. The ZrO2-NPs have also been synthesized in the presence of surfactants i.e. sodium dodecyl sulfate (SDS). The presence and interaction of ZrO2-NPs with surfactant has been verified using FTIR study. Optical studies showed significant reduction in PL intensity of ZrO2-NPs on surface modification. The decrease in PL intensity has been attributed to the passivation of ZrO2-NPs surface defects by surfactant molecules. The outcomes of the study pave the way to explore these ZrO2-NPs for optical sensors.
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