Boosting H2 Production over C60-Mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-Scheme Heterojunction via Enhanced Interfacial Carrier Separation

Chunxue Li, Xiaoteng Liu, Pengwei Huo, Yongsheng Yan*, Guangfu Liao*, Guixiang Ding, Chunbo Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Improving greatly the separation efficiency of interfacial charge carrier is a major challenge in photocatalysis. Herein, a new class of C60-mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-scheme heterojunction with enhanced interfacial charge carrier separation is designed and synthesized. The constructed S-scheme heterojunction thermodynamically favors photocatalytic H2 evolution because of the large driving force resulting from its strong redox abilities. As a consequence, the optimum proportion of C60-mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-scheme heterojunction displays comparable H2 evolution activity with a rate of 7825.20 µmol h−1 g−1 under visible light irradiation, which is about 93.05 times, 6.38 times and 2.65 times higher than that of 2% C60/NH2-MIL-125(Ti), Zn0.5Cd0.5S and 45% NH2-MIL-125(Ti)/Zn0.5Cd0.5S, and outperforms the majority of the previously reported MOFs-based photocatalysts. Spectroscopic characterizations and theory calculations indicate that the S-scheme heterojunction can powerfully promote the separation of photogenerated carriers. This work offers a new insight for future design and development of highly active MOFs-based photocatalysts.

Original languageEnglish
Article number2102539
Number of pages7
JournalSmall
Volume17
Issue number39
Early online date18 Aug 2021
DOIs
Publication statusPublished - 1 Oct 2021

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