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Abstract
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The increasing demand for efficient photocatalysts in environmental remediation, water purification, and renewable energy applications has highlighted the urgent need for novel nanostructured materials with enhanced light-matter interaction. Among various strategies, the design of well-ordered nanoscale architectures such as binary colloidal crystals and their inverse opal structures offers a promising approach to overcome the limitations of conventional photocatalysts. These structures can significantly enhance light harvesting, promote multiple scattering of photons, increase the available surface area, and improve the overall photocatalytic efficiency of materials such as titanium dioxide (TiO₂). Despite significant progress in material synthesis and structural engineering, challenges remain in optimizing the photonic bandgap effects, particle size distribution, and interconnectivity of pores to maximize visible-light-driven photocatalytic performance. By systematically designing and fabricating binary colloidal crystals and inverse opals, this research seeks to address these challenges, providing a pathway toward more effective and practical photocatalysts. The outcomes of this study are expected to contribute not only to fundamental understanding of light-matter interactions in complex nanostructures but also to the development of sustainable technologies for environmental protection and solar energy utilization.
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