TY - JOUR
T1 - TpBD COF@ZnIn2S4 nanosheets
T2 - A novel S-scheme heterojunction with enhanced photoreactivity for hydrogen production
AU - Bao, Shutong
AU - Tan, Qiuyan
AU - Wang, Shaodan
AU - Guo, Jie
AU - Lv, Kangle
AU - Carabineiro, Sónia A. C.
AU - Wen, Lili
N1 - info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50006%2F2020/PT#
This work was supported by the National Natural Science Foundation of China (22171097, 21771072 & 51672312), the Fundamental Research Funds for the Central Universities, South‐Central Minzu University (CZP22001 & KTZ20043) and joint supported by Hubei Provincial Natural Science Foundation and Huangshi of China (CFD001), as well as the Fundamental Research Funds for the Central Universities (Grant No. CCNU22QN008) and the fund of the Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, CHCL 21001.
SACC also acknowledges FCT for the Scientific Employment Stimulus - Institutional Call (CEECINST/00102/2018).
PY - 2023/8/5
Y1 - 2023/8/5
N2 - Covalent-organic frameworks (COFs) are emerging photocatalysts with porous structures and excellent light-harvesting abilities. However, their photoreactivity still needs further improvement before they can be used in practical applications. Herein, we report, for the first time, on the construction of a heterojunction consisting of core-shell structured 1,3,5-triformylphloroglucinol (Tp) and 4,4′-biphenylenediamine (BD) COF at ZnIn2S4 (ZIS) nanosheets, using a microwave-hydrothermal method. The best performing sample, TpBD COF@ZIS-10 (with a ZIS:TpBD COF mass ratio of 10:1), in the absence of a co-catalyst, achieves a visible-light-driven H2 production rate of 2304 μmol g−1 h−1 with an AQE of 5.02% at 420 nm, and exhibits excellent stability. The improved photocatalytic performance of TpBD COF@ZIS was attributed to the strong interaction at the interface and the S-scheme charge transfer mechanism, which not only stimulates efficient charge separation and migration, suppressing recombination, but also preserves the higher redox potentials of photo-generated electrons and holes.
AB - Covalent-organic frameworks (COFs) are emerging photocatalysts with porous structures and excellent light-harvesting abilities. However, their photoreactivity still needs further improvement before they can be used in practical applications. Herein, we report, for the first time, on the construction of a heterojunction consisting of core-shell structured 1,3,5-triformylphloroglucinol (Tp) and 4,4′-biphenylenediamine (BD) COF at ZnIn2S4 (ZIS) nanosheets, using a microwave-hydrothermal method. The best performing sample, TpBD COF@ZIS-10 (with a ZIS:TpBD COF mass ratio of 10:1), in the absence of a co-catalyst, achieves a visible-light-driven H2 production rate of 2304 μmol g−1 h−1 with an AQE of 5.02% at 420 nm, and exhibits excellent stability. The improved photocatalytic performance of TpBD COF@ZIS was attributed to the strong interaction at the interface and the S-scheme charge transfer mechanism, which not only stimulates efficient charge separation and migration, suppressing recombination, but also preserves the higher redox potentials of photo-generated electrons and holes.
KW - COFs
KW - ZnIn2S4
KW - S-scheme heterojunction
KW - Photocatalytic H2 production
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85149828100&origin=resultslist&sort=plf-t&src=s&st1=10.1016%2fj.apcatb.2023.122624&sid=a93e91c24ea1d43b69dd6856634a3f49&sot=b&sdt=b&sl=33&s=DOI%2810.1016%2fj.apcatb.2023.122624%29&relpos=0&citeCnt=0&searchTerm=
U2 - 10.1016/j.apcatb.2023.122624
DO - 10.1016/j.apcatb.2023.122624
M3 - Article
SN - 0926-3373
VL - 330
JO - Applied Catalysis B-Environmental
JF - Applied Catalysis B-Environmental
M1 - 122624
ER -
