This study reports a metastable dual-vacancy catalytic design that enhances proton-coupled electron transfer by balancing proton supply and charge separation. The system achieves nearly 100% CO₂-to-CH₄ selectivity with a 75-fold higher rate than pristine TiO₂, offering a new pathway for designing selective catalytic systems.
- Ye He
- Jianping Sheng
- Fan Dong
