Aliovalent Cl Substitution Modulates Oxygen‐Vacancy‐Related Defect States in Bi 2 O 2 S Toward Efficient Photocatalytic CO 2 ‐to‐CO Conversion
Pristine Bi 2 O 2 S suffers from pronounced surface inertness and inefficient utilization of photogenerated charge carriers in photocatalytic CO 2 reduction. To address this limitation, an aliovalent Cl‐for‐S substitution strategy is employed. Owing to the comparable ionic sizes of Cl − and S 2− , Cl incorp...