Advanced photocatalytic degradation of POPs and other contaminants: a comprehensive review on nanocomposites and heterojunctions.

The environmental persistence and toxicity of pollutants such as persistent organic pollutants (POPs), synthetic dyes, and pharmaceutical residues necessitate the development of effective and sustainable remediation strategies. This review underscores the urgent need for advanced approaches to eliminate these contaminants, with a particular focus on metal oxide-based photocatalysts, such as TiO, ZnO, WO, CuO, and others. We have explored their photocatalytic mechanisms, inherent limitations, and recent advancements, such as elemental doping and heterojunction engineering, to enhance their activity under visible light.

Nanocosmos of catalysis: a voyage through synthesis, properties, and enhanced photocatalytic degradation in nickel sulfide nanocomposites.

Nanomaterials play a decisive role in environmental applications such as water purification, pollutant monitoring, and advanced oxidation-based remediation processes, particularly in semiconductor and metal sulfide-based photocatalysis. Metal sulfides are ideal for photocatalysis because of their unique optical, structural, and electronic characteristics. These properties enable the effective use of solar energy to drive various catalytic reactions with potential uses in environmental remediation with sustainable energy production.