Insight into mechanism for remarkable photocatalytic hydrogen evolution of Cu/Pr dual atom co-modified TiO.

The development of high-activity photocatalysts is crucial for the current large-scale development of photocatalytic hydrogen applications. Herein, we have developed a strategy to significantly enhance the hydrogen photocatalytic activity of Cu/Pr di-atom co-modified TiO architectures by selectively anchoring Cu single atoms on the oxygen vacancies of the TiO surface and replacing a trace of Ti atoms in the bulk with rare earth Pr atoms. Calculation results demonstrated that the synergistic effect between Cu single atoms and Pr atoms regulates the electronic structure of Cu/Pr-TiO, thus promoting the separation of photogenerated carriers and their directional migration to Cu single atoms for the photocatalytic reaction.

Changeable Active Sites by Pr Doping CuSA-TiO Photocatalyst for Excellent Hydrogen Production.

Photocatalytic water splitting for clean hydrogen production has been a very attractive research field for decades. However, the insightful understanding of the actual active sites and their impact on catalytic performance is still ambiguous. Herein, a Pr-doped TiO-supported Cu single atom (SA) photocatalyst is successfully synthesized (noted as Cu/Pr-TiO).

S-scheme CuP/TiO heterojunction for outstanding photocatalytic water splitting.

TiO photocatalysts are of great interest in the fields of environmental purification, new energy and so on, because of their non-toxicity, high stability, high redox ability and low cost. However, the photogenerated carriers are severely recombined, which limits the application of TiO photocatalysts. Herein, S-scheme CuP/TiO heterojunction composites were successfully synthesized by a simple and efficient microwave hydrothermal method, and the results show that the hydrogen production rate of CuP/TiO is 5.