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Phenol adsorption under dark conditions (first 24 h) and photocatalytic degradation under visible light (last 24 h) by using AC (■), and composites obtained from the dissolution of 1 g (▲) and 6 g (⬤) of precursor. Adsorbent dosage: 0.5 g/L. Inset: First-order kinetic equations of the photocatalytic degradation of phenol calculated with the first 16 h of visible irradiation.
