Efficient and stable visible-light-driven Z-scheme overall water splitting using an oxysulfide H2 evolution photocatalyst

Abstract So-called Z-scheme systems permit overall water splitting using narrow-bandgap photocatalysts. To boost the performance of such systems, it is necessary to enhance the intrinsic activities of the hydrogen evolution photocatalyst and oxygen evolution photocatalyst, promote electron transfer from the oxygen evolution photocatalyst to the hydrogen evolution photocatalyst, and suppress back reactions. The present work develop a high-performance oxysulfide photocatalyst, Sm 2 Ti 2 O 5 S 2 , as an hydrogen evolution photocatalyst for use in a Z-scheme overall water splitting system in combination with BiVO 4 as the oxygen evolution photocatalyst and reduced graphene oxide as the solid-state electron…

• MO
  Ministry of Education, Culture, Sports, Science and Technology

  Award: JPMXP1222UT0023
• NE
  New Energy and Industrial Technology Development Organization