Rising plastic waste from products such as contact lenses underscores the need for innovative recycling solutions. This study presents a sustainable approach to produce reusable photocatalytic hybrid nanocomposites for water treatment through the use of waste contact lenses. TiO2 nanoparticles were uniformly integrated into postused contact lenses via a controlled spray deposition technique, resulting in nanocomposites with different spray times (10, 15, or 20 min). The innovative polymeric hybrids were comprehensively characterized from a morphological, structural, and chemical standpoint using techniques such as scanning and transmission electron microscopy, thermogravimetric analysis, X-ray diffraction analysis, Raman spectroscopy, Z-potential analysis, UV–vis spectroscopy, and Fourier transform infrared spectroscopy. The UV-photocatalytic performance of the resulting systems was successfully tested …