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In the current work, hydroxyapatite (HAP) particles were synthesized by using Citrus Limon. Pectin was extracted from lemon and was used as stabilizing agent during particles synthesis. HAP particles were synthesized by mixing calcium chloride solution and ammonium dihydrogen phosphate solution and pectin in a definite ratio. Fabrication of silver nanoparticles was carried out in the presence of HAP particles to obtain Ag-HAP hybrid particles. HAP and Ag-HAP systems were characterized using Fourier transform infrared spectroscopy (FTIR), UV–visible spectroscopy (UV–vis), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Energy dispersive X-ray spectroscopy (EDX). The catalytic activity of Ag-HAP system was evaluated by reducing 4-nitrophenol and by degrading organic dyes (Rhodamine b, Brilliant blue and Methyl orange). The experimental results showed that Ag-HAP hybrid particles have good catalytic activity and may be used for catalysis of different organic reactions.

Hydroxyapatite stabilized silver nanoparticles and their catalytic activity