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This study demonstrated facile synthesis of silver phosphate (Ag₃PO₄) photocatalysts for the degradation of organic contaminants. Ag₃PO₄ microparticles from different concentrations of precursor, AgNO₃, were produced and characterized by scanning electron microscopy, powder X-ray diffraction, and UV⁻visible diffuse reflectance spectroscopy. Degradation rates of methylene blue (MB) and phenol were measured in the presence of microparticles under low-power white-light light-emitting-diode (LED) irradiation and the reaction rate followed pseudo-first-order kinetics. The prepared Ag₃PO₄ microparticles displayed considerably high photocatalytic activity (&gt;99.8% degradation within 10 min). This can be attributed to the microparticles' large surface area, the low recombination rate of electron⁻hole pairs and the higher charge separation efficiency. The practicality of the Ag₃PO₄ microparticles was validated by the degradation of MB, methyl red, acid blue 1 and rhodamine B under sunlight in environmental water samples, demonstrating the benefit of the high photocatalytic activity from Ag₃PO₄ microparticles.

Facile Synthesis and Characterization of Ag3PO4 Microparticles for Degradation of Organic Dyestuffs under White-Light Light-Emitting-Diode Irradiation