TY - JOUR
T1 - C-doped ZnS-ZnO/Rh nanosheets as multijunctioned photocatalysts for effective H2 generation from pure water under solar simulating light
AU - Khan, Sovann
AU - Je, Minyeong
AU - Ton, Nhan Nu Thanh
AU - Lei, Wenwei
AU - Taniike, Toshiaki
AU - Yanagida, Sayaka
AU - Ogawa, Daisuke
AU - Suzuki, Norihiro
AU - Terashima, Chiaki
AU - Fujishima, Akira
AU - Choi, Heechae
AU - Katsumata, Ken ichi
N1 - Funding Information:
This research was financially supported by a Grant-in-Aid for JSPS Fellows (No. 18F18337 ) from the Japan Society for the Promotion of Science (JSPS) . S. Khan would like to thank JSPS for supporting his postdoctoral research (standard-P18337). M.J. and H.C. acknowledge the financial support of the Federal Ministry of Education and Research (BMBF) under the “Make Our Planet Great Again–German Research Initiative” (MOPGA-GRI; 57429784) implemented by the German Academic Exchange Service: Deutscher Akademischer Austauschdienst (DAAD). We would like to thank Dr. Priyank Mohan in JAIST for help in TEM analyss. Finally, S. Khan would like to dedicate this work to his mother Ouk Y who passed way (April 27, 2021) by liver cancer. She has provided great supports to this work. May She Rest in Peace.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11/15
Y1 - 2021/11/15
N2 - A combined solvothermal method and post-annealing to synthesize highly active ZnS-ZnO nanosheets is presented. ZnO was produced on ZnS nanosheets by thermal annealing ZnS/ethylenediamine in air. From combined studies of experimental and computational works, we revealed that during annealing, carbon (C) element was a major dopant from the decomposition of ethylenediamine, which was unintentionally doped into the ZnS-ZnO, and gave major impacts on enhanced visible-light photocatalysis. Rhodium (Rh) was deposited by in situ photoreduction to form a ZnS-ZnO/Rh catalyst composite. This multijunctioned photocatalyst was outstanding for H2 generation from pure water under solar simulating light due to effective charge separation by Z-scheme heterojunction of ZnS and ZnO and Schottky junction of Rh-cocatalysts/semiconductors. This facile method realizes multijunctioned ZnS-ZnO/Rh photocatalysts with substantial defects that are very promising for solar-energy harvesting applications.
AB - A combined solvothermal method and post-annealing to synthesize highly active ZnS-ZnO nanosheets is presented. ZnO was produced on ZnS nanosheets by thermal annealing ZnS/ethylenediamine in air. From combined studies of experimental and computational works, we revealed that during annealing, carbon (C) element was a major dopant from the decomposition of ethylenediamine, which was unintentionally doped into the ZnS-ZnO, and gave major impacts on enhanced visible-light photocatalysis. Rhodium (Rh) was deposited by in situ photoreduction to form a ZnS-ZnO/Rh catalyst composite. This multijunctioned photocatalyst was outstanding for H2 generation from pure water under solar simulating light due to effective charge separation by Z-scheme heterojunction of ZnS and ZnO and Schottky junction of Rh-cocatalysts/semiconductors. This facile method realizes multijunctioned ZnS-ZnO/Rh photocatalysts with substantial defects that are very promising for solar-energy harvesting applications.
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U2 - 10.1016/j.apcatb.2021.120473
DO - 10.1016/j.apcatb.2021.120473
M3 - Article
AN - SCOPUS:85108607464
VL - 297
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
M1 - 120473
ER -