A surface reconstruction route for increasingly improved photocatalytic H 2 O 2 production using Sr 2 Bi 3 Ta 2 O 11 Cl

Sr 2 Bi 3 Ta 2 O 11 Cl as an excellent photocatalyst for H 2 O 2 production (∼3 mmol h −1 g −1 ) that further improves as time passes due to surface vacancy formation, demonstrating the role of rational defect engineering in developing sustainable photocatalysts.