Photocatalytic Degradation of Quinoline Yellow over Ag3PO4

Abstract

In this study, the ability of Ag3PO4 to achieve the photocatalytic degradation of quinoline yellow (QY) a hazardous and recalcitrant dye, under UVA and visible light was investigated. The photocatalyst Ag3PO4 was synthesized through a precipitation method, and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), BET Brunauer–Emmett-Teller (BET) analysis, UV-Differential Reflectance Spectroscopy (DRS) and Fourier transform infrared spectroscopy (FTIR). Ag3PO4 could successfully induce the photocatalytic degradation of QY under UVA and visible light. Optimal parameters were 0.5 g·L−1 of the catalyst, 20 ppm of QY and pH~7. Ag3PO4 was 1.6-times more efficient than TiO2 Degussa P25 under UVA light in degrading QY. Total organic carbon (TOC) analyses confirmed the almost complete QY mineralization. At least eight intermediate degradation products were identified by liquid chromatography coupled to high resolution mass spectrometry. The stability of Ag3PO4 was satisfactory as less than 5% Ag metal appeared in XRD analyses after 3 reuse cycles. These results show that under optimized conditions Ag3PO4 can efficiently achieve quinolone yellow mineralization.

Light-powered swarming phoretic antimony chalcogenide-based microrobots with “on-the-fly” photodegradation abilities

“…As described in a previous study, photodegradation efficiency of tartrazine is higher at acidic conditions 57 whereas photodegradation of quinoline yellow showed to be the most efficient without any pH control. 58…”

“…As described in a previous study, photodegradation efficiency of tartrazine is higher at acidic conditions 57 whereas photodegradation of quinoline yellow showed to be the most efficient without any pH control. 58 To investigate the degradation process of food dyes deeper, control experiments of the photodegradation of quinoline yellow were performed with ethylenediaminetetraacetic acid (EDTA). EDTA is a commonly used scavenger that interacts with photogenerated holes and hinders the formation of OH • radicals.…”

Photodegradation of 17α-ethinylestradiol on Ag3PO4 crystals treated at different temperatures

“…5a-b that the Ag 3 PO 4 crystals (25°C) present a mixture of particles with different morphologies, that is, spheres and polyhedra with a certain degree of aggregation. The growth of these grains with spherical or polyhedral shapes (not so well de ned) is commonly favored by the condition of synthesis at low temperatures without the addition of organic solvents (Botelho et al 2015;Cui et al 2016;Tab et al 2020).…”

Controlled Synthesis and Catalytic Performance of Ag3PO4 Polyhedra Photocatalysts

“…[34] Therefore, there is a need for a simple and inexpensive method to fabricate well-defined Ag 3 PO 4 photocatalysts that can expose only highly active surfaces. [35] In this article, Ag 3 PO 4 crystals with different morphologies were synthesized via a simple precipitation method in the presence of TEA. The growth mechanism of Ag 3 PO 4 was also investigated.…”