Ag₃PO₄‐Supported Magnetic Hydroxyapatite Composite as Green Photocatalyst for the Removal of Cationic and Anionic Dyes from Aqueous Solution

Abstract

Eggshells were used as the main source for the synthesis of hydroxyapatite (HAp), and the semiconductor material Ag3PO4 was synthesized by the crystal formation process on magnetic HAp. X‐ray diffraction, scanning electron microscopy, the Brunauer‐Emmett‐Teller surface area, and X‐ray photoelectron, Fourier transform infrared, and ultraviolet‐visible light diffuse reflectance spectroscopy were employed to study the phase structure, surface morphology, and optical properties of the composite photocatalyst. The photocatalytic activities of the synthesized composites were explored for the photodegradation of both cationic (Methylene Blue) and anionic (Reactive Red 195) dyes, achieving efficiencies of around 99 % and 96 %, respectively. Vibrating sample magnetometry showed the excellent regenerability of the magnetic composite after five cycles, demonstrating its potential for removing cationic and anionic dyes from aqueous solutions.

Basella alba Leaves‐Assisted Eco‐Fabrication of Ag/ZnO Nanocomposites for Anti‐Bactericidal Activity and Catalytic Degradation of Anthropogenic Pollutants

“…S4a, while the addition of Ag ions onto the outer facet of the ZnO NP reduces the particle size, as shown in Fig. S4b 25, 26. The formation of polydispersed spherical‐shaped NP was confirmed by TEM analysis, as shown in Fig.…”