A CsPbBr 3 Perovskite Quantum Dot/Graphene Oxide Composite for Photocatalytic CO 2 Reduction

Halide perovskite quantum dots (QDs), primarily regarded as optoelectronic materials for LED and photovoltaic devices, have not been applied for photochemical conversion (e.g., water splitting or CO2 reduction) applications because of their insufficient stability in the presence of moisture or polar solvents. Herein, we report the use of CsPbBr3 QDs as novel photocatalysts to convert CO2 into solar fuels in nonaqueous media. Under AM 1.5G simulated illumination, the CsPbBr3 QDs steadily generated and injected electrons into CO2, catalyzing CO2 reduction at a rate of 23.7 μmol/g h with a selectivity over 99.3%. Additionally, through the construction of a CsPbBr3 QD/graphene oxide (CsPbBr3 QD/GO) composite, the…

• NN
  National Natural Science Foundation of China

  Awards: 91222201, 91433109
• MO
  Ministry of Education of the People's Republic of China
• NS
  Natural Science Foundation of Guangdong Province

  Awards: 2014A030313148, S2013030013474