A nano-TiO₂ and silver ion exchanger with fine, uniform particles—antibacterial under UV (via TiO₂) and without light (via silver). Non-volatile, non-leaching, and eco-friendly. It releases silver ions to disrupt bacterial systems, with silver reactivated by light to generate oxidizing species. Effective for plastics, appliances, building materials, textiles, paper products, toys, and daily necessities.