Naphthalimide-porphyrin hybridized graphitic carbon nitride for enhanced photocatalytic hydrogen production

Lingling Li, Govardhana Babu Bodedla, Zhitian Liu, Xunjin ZHU*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A series of NP/g-C3N4 hybrids of graphitic carbon nitride (g-C3N4) with naphthalimide-porphyrin (NP) are developed for photocatalytic hydrogen production. Planar naphthalimide-porphyrins are facilely adsorbed onto flexible two-dimensional g-C3N4 through π–π stacking. Except for its function as photosensitizer, NP in the hybrid could efficient inhibit the charge recombination by electron transfer from the lowest unoccupied molecular orbital (LUMO) of NP to conduction band of g-C3N4, meanwhile facilitate Förster energy transfer from g-C3N4 donor to NP acceptor for the efficient overlap of absorption spectrum of NP and emission of g-C3N4. As a result, the hybrid 2%NP/g-C3N4 containing 2% weight ratio of NP exhibits an impressive photocatalytic hydrogen production rate (HPR) of 2297 μmol g−1 h−1, while pristine g-C3N4 shows a HPR of 698 μmol g−1 h−1. Specifically, the performance of 2%NP/g-C3N4 is far superior compared with the hybrids of g-C3N4 with Zn(II)-tetrakis(4-carboxylphenyl)porphyrin (ZnTCPP) and Zn(II)-tetrakis(4-phenyl)porphyrin (ZnTPP) in photocatalytic hydrogen production under the same conditions.

Original languageEnglish
Article number143755
JournalApplied Surface Science
Volume499
DOIs
Publication statusPublished - 1 Jan 2020

Scopus Subject Areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

User-Defined Keywords

  • Energy transfer
  • Graphitic carbon nitride
  • Naphthalimide
  • Photocatalytic hydrogen production
  • Porphyrin

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