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This study investigated the photocatalytic degradation of diclofenac, a common pharmaceutical pollutant, using Cu2ZnSnX4 (X = S, Se) kesterite nanoparticles activated by visible light in aqueous solutions. The researchers characterized the degradation kinetics, identified transformation products formed during the photocatalytic process, and assessed the ecotoxicity of both the parent compound and its degradation products. The kesterite materials demonstrated effective photocatalytic activity under visible light irradiation, offering a potential method for removing pharmaceutical contaminants from water.
Why it matters
Pharmaceutical pollutants like diclofenac increasingly contaminate water sources and pose risks to aquatic ecosystems and human health. This research presents a sustainable approach using earth-abundant, visible-light-responsive materials for water treatment, which could be more practical and energy-efficient than UV-dependent systems currently employed in wastewater treatment facilities.
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