Abstract: The Hydroxylapatite particles are prepared by sol-gel methods and characterized by IR spectroscopy and N2 absorption. The adsorption behavior of p-nitrophenol on HAP is investigated. The results show that the adsorption of p-nitrophenol accorded with Langmiur and Freundlich equation and proved to be a spontaneous, exothermal process.
Keywords: Hydroxylapatite; Sol–Gel method; Synthesis; 4-Nitrophenol; Adsorption