A Few Pt Single Atoms Are Responsible for the Overall Co?Catalytic Activity in Pt/TiO ₂ Photocatalytic H ₂ Generation

The use of single atoms (SAs) has become a highly investigated topic in heterogeneous catalysis, electrocatalysis, and most recently also photocatalysis. In the field photocatalysis, Pt SAs on TiO2 have been reported to be efficient co-catalyst solar H2 production. Herein, deposition nanoparticles titania nanosheets is investigated. particular, species responsible for high co-catalytic activity using cyanide leaching process elucidated. It shown that neither Pt0 nor majority do significantly contribute platinum TiO2. fact, >90% standard are non-active can removed by without loss—as consequence, remaining amount remarkable turnover frequency 4.87 × 105 h?1 evolution.