Enhanced Photocatalytic Hydrogen Evolution of Carbon Quantum Dot Modified 1D Protonated Nanorods of Graphitic Carbon Nitride

Lingling Li, Xunjin ZHU*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

1D protonated graphitic carbon nitride (HCN) are prepared through free-template chemical method and further modified with different amount of carbon quantum dots (CQDs) to afford new hybrids denoted as HCNC-x (x represents weight ratio of CQDs) for photocatalytic hydrogen evolution. The immobilization of CQDs onto HCN not only significantly improves the visible-light harvesting, but also prolongs the lifetime of charge carriers upon photoexcitation and suppresses the recombination of electron-hole pairs because of the intimate interface formed between the two components with opposite charges. As a result, the HCNC-0.50 show the highest photocatalytic hydrogen evolution rate of 382 μmol h-1 g-1 under visible light irritation, which was about 3-fold of pristine HCNC-0.0. Moreover, no decay of activity is observed for the HCNC-x hybrids that is recycled after 12 h photocatalytic reaction and then exposed to air for half a year.

Original languageEnglish
Pages (from-to)5337-5344
Number of pages8
JournalACS Applied Nano Materials
Volume1
Issue number9
DOIs
Publication statusPublished - 28 Sep 2018

Scopus Subject Areas

  • Materials Science(all)

User-Defined Keywords

  • 1-D nanorods
  • carbon quantum dot
  • hydrogen evolution
  • photocatalysis
  • protonated graphitic carbon nitride

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