Journal
DALTON TRANSACTIONS
Volume 50, Issue 47, Pages 17618-17624Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt03385a
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Funding
- National Natural Science Foundation of China [51872068, 52102229]
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In this study, a metal-organic framework (ZIF-8)-derived nitrogen-doped carbon (C-ZIF)-modified g-C3N4 composite was prepared by pyrolysis, showing enhanced photocatalytic activity. The hierarchical inorganic/organic heterostructure of C-ZIF@g-C3N4 provides abundant active sites for photocatalytic reactions, leading to improved separability and catalytic efficiency under visible-light irradiation.
In this study, a metal-organic framework (ZIF-8)-derived nitrogen-doped carbon (C-ZIF)-modified g-C3N4 composite was directly prepared by pyrolysis. C-ZIF@g-C3N4 composites with different loadings were prepared by changing the precursor content. The charge transfer process that occurs at the interface of the ZIF-8-derived nitrogen-doped carbon/g-C3N4 heterostructures strongly hinders the recombination of photoinduced electron-hole pairs, thereby effectively enhancing the photocatalytic activity of C-ZIF@g-C3N4. Meanwhile, the unique hierarchical inorganic/organic heterostructure provides an abundance of active sites for photocatalytic reactions. Upon visible-light irradiation, C-ZIF@g-C3N4 with an optimal ratio of g-C3N4 to C-ZIF components exhibits both enhanced photocatalytic activity and excellent separability during the degradation of dye and hydrogen evolution compared to unmodified g-C3N4.
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