Experimental data on CO₂ reduction selectivity of structurally doped TiO₂ photocatalysts

This study investigates the tuning of product selectivity in photocatalytic CO₂ reduction by structural doping of TiO₂ using nitrogen lattice doping, Ti³⁺ self-doping via oxygen vacancies, and surface-anchored single platinum active sites. Advanced structural and spectroscopic analyses reveal how dopant-induced defect engineering governs charge separation and electron transfer pathways, enabling selective formation of CO or CH₄. Nitrogen doping stabilizes oxygen vacancies and favors two-electron reduction to CO, while platinum sites promote multi-electron transfer leading to methane. The work directly supports the APPROACH project objectives by advancing knowledge in functional photonic materials for solar energy harvesting and contributes to WP3 (Human Capital of Excellence) and WP4 (Talent Skill Development) through interdisciplinary skill development and knowledge transfer in advanced materials design.