Effective photocatalytic decolorization of indigo carmine dye in Moroccan natural phosphate–TiO2 aqueous suspensions
Source abstract
Abstract
Abstract Heterogeneous photocatalysis is a significant green technology for application in water purification. In this study, the photocatalytic activity of NP–TiO 2 based on Moroccan natural phosphate (NP) doped by titanium dioxide TiO 2 was evaluated by photocatalytic decolorization of indigo carmine (IC) dye in aqueous solution as a model pollutant under UV light. The NP–TiO 2 catalyst was characterized by XRD, FTIR and surface area. The effect of the calcination temperature of NP–TiO 2 , catalyst concentration, initial concentration of the IC, initial pH, initial hydrogen peroxide H 2 O 2 concentration and coexisting ions on the photocatalytic decolorization of IC was investigated. The NP–TiO 2 showed a significantly higher rate of degradation of IC, when compared to TiO 2 . After 125 min of irradiation using a low intensity of UV-lamp (15 W ∗ 3 lamps = 45 W), 99% of IC solution (20 mg L −1 ) was decolorized with 0.5 g L −1 of the NP–TiO 2 calcined at 600 °C at pH = 11. Therefore, this process can be developed as an economically feasible and environmentally friendly method to decolorize or treat dye wastewater using sunlight.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Nanomaterials for catalytic reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
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