Self-Assembled Naphthalimide-Substituted Porphyrin Nanowires for Photocatalytic Hydrogen Evolution

Govardhana Babu Bodedla, Jun Huang, Wai Yeung WONG, Xunjin ZHU*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A linear 5,15-di(naphthalimide) substituted porphyrin ZnD(p-NI)PP is facilely self-assembled into nanowires in solid with well-defined morphology through the synergistic πstack interactions of both porphyrin and naphthalimide skeletons. The self-assembled porphyrin nanowires feature broadened light absorption, efficient separation and transfer of photogenerated charges, and enhanced photostability. As a consequence, the ZnD(p-NI)PP produced 108 times higher H2 production rate (H2 = 5.40 mmol g-1 h-1) than the control 5,15-diphenylporphyrin (ZnDPP) (H2 = 0.05 mmol g-1 h-1) and 3.6-fold higher than the ZnT(p-NI)PP (H2 = 1.50 mmol g-1h-1) which bears four NI units and self-assembled into nanospheres in the solid. Additionally, the photocatalytic system of ZnD(p-NI)PP produced hydrogen evolution up to 50 h, while the hydrogen evolution of the ZnDPP photocatalytic system reached a plateau after 20 h.

Original languageEnglish
Pages (from-to)7040-7046
Number of pages7
JournalACS Applied Nano Materials
Volume3
Issue number7
DOIs
Publication statusPublished - 24 Jul 2020

Scopus Subject Areas

  • Materials Science(all)

User-Defined Keywords

  • heterogeneous catalysis
  • naphthalimide-conjugation
  • photocatalytic hydrogen evolution
  • Porphyrins
  • self-assembly

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