A robust “artificial catalyst” in situ formed from CdTe QDs and inorganic cobalt salts for photocatalytic hydrogen evolution

A simple hollow-structured “artificial catalyst” in situ formed from CdTe QDs and CoCl2·6H2O in aqueous ascorbic acid solution has shown exceptional activity and stability for photocatalytic H2 evolution (25 μmol h−1 mg−1, 219 100 mol H2 per mol QDs or 59 600 mol H2 per mol Co turnovers, respectively) under visible light irradiation for 70 h.