Diverting the use of reduced TiO ₂ from a carrier of electron-hole pairs to a reservoir of Brönsted-Lewis acidic pairs for sustainable, non-optical H ₂ O ₂ homolysis

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Key Points

To explore the potential of reduced TiO2 as a reservoir for Brönsted-Lewis acidic pairs instead of a carrier for electron-hole pairs.
Investigated the intra-bandgap states and valence band properties of defective TiO2.
Examined the electron and hole interactions upon photo-excitation.
Analyzed the formation efficiency of •OH, O2•-, and 1O2.
Reduced TiO2 significantly enhances H2O2 homolysis with higher formation rates of reactive species.
The presence of acidic pairs improves reaction pathways compared to traditional methods.
Intra-bandgap states play a crucial role in enhancing reaction efficiency.

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This randomized trial demonstrates efficient H2O2 homolysis in TiO2, suggesting a novel use for sustainable energy applications.

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Kim et al. (2026) studied this question.

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