Ali Hajizadeh - Department of Chemistry, Faculty of Science, Hakim Sabzevari University, Sabzevar, Iran
Mohammad Chahkandi - Department of Chemistry, Faculty of Science, Hakim Sabzevari University, Sabzevar, Iran

Nowadays, degradation of phenol and its derivatives was attracted due to high toxicity for human health and high stability in environment [1, 2]. In this study, we focused on preparation of new nanocomposites of hydroxyapatite (HAP) with high photocatalytic activity for degradation of phenol. In this regards, different nanocompoistes of HAP/Bi2O3-Ag with various mass ratios of Bi2O3-Ag and HAP (5:95; 10:90; 30:70; 50:50) were fabricated by simple and low cost of precipitation-hydrothermal method. The prepared nanocomposits were characterized by X-ray diffraction (XRD), FT-IR spectroscopy, and Scanning electron microscopy (SEM) equipped with Elemental analysis (EDX). The nanocomposites were used for photocatalytic degradation of phenol in aqueous solution. The prepared nanocomposites were showed higher activity than HAP and Bi2O3 alone. This behavior is related to hetrojunction of HAP with Bi2O3 semiconductor with low band gap and Ag as a plasmonic compound. The proposed mechanism of photocatalytic degradation of nanocomposite has been depicted in Scheme 1.