TY - JOUR
T1 - Design of sculptured SnS/g-C3N4 photocatalytic nanostructure for highly efficient and selective CO2 conversion to methane
AU - Omr, Hossam A.E.
AU - Putikam, Raghunath
AU - Hussien, Mahmoud Kamal
AU - Sabbah, Amr
AU - Lin, Tsai Yu
AU - Chen, Kuei Hsien
AU - Wu, Heng Liang
AU - Feng, Shien Ping
AU - Lin, Ming Chang
AU - Lee, Hyeonseok
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2023/5/5
Y1 - 2023/5/5
N2 - Here, we demonstrate the SnS/g-C3N4 crystallized and nanostructured photocatalysts for efficient and selective CO2 conversion to CH4 by engineered thermal evaporation and the decoration of g-C3N4 through a simple dipping method, overcoming the limitation of bulk SnS-based photocatalysts. The SnS/g-C3N4 nanostructured photocatalysts exhibit a superior methane production rate of 387.5 μmol∙m−2∙h−1 (= c.a. 122.33 μmol∙g−1∙h−1) with an apparent quantum yield of c.a. 9.7% at 520 nm with engineered lengths. Moreover, 100% selective production toward CH4 is also measured from the SnS/g-C3N4 photocatalysts, with > 10 h stable operation. These performances are, to the best of our knowledge, the highest production rate among reported photocatalytic films and metal sulfide/g-C3N4 composite-based photocatalysts. These highly improved performances are attributed to synergistic effects by the formation of nanostructured SnS/g-C3N4, exhibiting superior light absorption, higher crystallinity, Z-scheme charge transport via C-S bonding, physical advantages of the SnS nanostructure, and excellent physiochemical properties of the surfaces.
AB - Here, we demonstrate the SnS/g-C3N4 crystallized and nanostructured photocatalysts for efficient and selective CO2 conversion to CH4 by engineered thermal evaporation and the decoration of g-C3N4 through a simple dipping method, overcoming the limitation of bulk SnS-based photocatalysts. The SnS/g-C3N4 nanostructured photocatalysts exhibit a superior methane production rate of 387.5 μmol∙m−2∙h−1 (= c.a. 122.33 μmol∙g−1∙h−1) with an apparent quantum yield of c.a. 9.7% at 520 nm with engineered lengths. Moreover, 100% selective production toward CH4 is also measured from the SnS/g-C3N4 photocatalysts, with > 10 h stable operation. These performances are, to the best of our knowledge, the highest production rate among reported photocatalytic films and metal sulfide/g-C3N4 composite-based photocatalysts. These highly improved performances are attributed to synergistic effects by the formation of nanostructured SnS/g-C3N4, exhibiting superior light absorption, higher crystallinity, Z-scheme charge transport via C-S bonding, physical advantages of the SnS nanostructure, and excellent physiochemical properties of the surfaces.
KW - CO conversion
KW - g-CN
KW - Photocatalysts
KW - Sculptured thin film
KW - Tin Sulfide
UR - http://www.scopus.com/inward/record.url?scp=85145559008&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2022.122231
DO - 10.1016/j.apcatb.2022.122231
M3 - Article
AN - SCOPUS:85145559008
SN - 0926-3373
VL - 324
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 122231
ER -