A Twin S‐Scheme Artificial Photosynthetic System with Self‐Assembled Heterojunctions Yields Superior Photocatalytic Hydrogen Evolution Rate

Abstract Designing heterojunction photocatalysts imitating natural photosynthetic systems has been a promising approach for photocatalytic hydrogen generation. However, in the traditional Z‐Scheme artificial photosynthetic systems, the poor charge separation, and rapid recombination of photogenerated carriers remain a huge bottleneck. To rationally design S‐Scheme (i.e., Step scheme) heterojunctions by avoiding the futile charge transport routes is therefore seen as an attractive approach to achieving high hydrogen evolution rates. Herein, a twin S‐scheme heterojunction is proposed involving graphitic C 3 N 4 nanosheets self‐assembled with hydrogen‐doped rutile TiO 2 nanorods and anatase TiO 2 nanoparticles.…

• CU
  City University of Hong Kong

  Awards: 9610577, CityU 9610577
• JP
  Jilin Province Development and Reform Commission

  Award: 2021C026
• NN
  National Natural Science Foundation of China

  Awards: 12034002, 22279044, 51872116
• PG
  People's Government of Jilin Province

  Award: 20210301009GX
• FR
  Fundamental Research Funds for the Central Universities