KOUROSH MOTEVALLI - Department of Applied Chemistry, Faculty of Sci ence, Islamic Azad University, South Tehran Branch,Tehran, Iran
ZAHRA YAGHOUBI - IT Department, Technical& Engineering Faculty, Islamic Azad University, South Tehran Branch, Tehran, Iran
Zabihullah Zarghami - Young Researchers and Elites Club, Arak Branch, IslamicAzad University, Arak, Iran
Mokhtar Panahi-Kalamuei - Young Researchers and Elites Club, South Tehran Branch,Islamic Azad University, Tehran, Iran

In this paper, PdO nanostructures were successfully synthesized by a thermal decomposition method at low temperature using palladium-metal organic framework (Pd-MOF) nanoparticles as a novel beginning reagent. Pd-MOF nanoparticles were prepared by an easy hydrothermal approach using ۲,۶-pyridinedicarboxylic acid as organic ligand and Pd(CH۳COO)۲ as palladium source. Pure cubicphase of PdO nanostructures were synthesized after calcination of of Pd-MOF nanoparticles at ۲۲۴ °C for ۶ h into an autoclave. The morphology and structure of the achieved products were characterized by X-ray Diffraction patterns, Energy-Dispersive X-ray Spectroscopy, Fourier Transformed Infrared spectrum, Scanning Electron Microscopy. Also, the efficiency of PdO nanostructures as a photocatalyst for the decolorization of methylene blue (MB) under visible light irradiation has been evaluated. The synthesized PdO nanostructures exhibited appreciablephotocatalytic activity and in presence of PdO, ۸۸ % degradation of MB was obtained after ۱۳۰ min.

nanostructures, nanoparticles, synthesis, thermal decomposition