Novel g-C3N4/CoO Nanocomposites with Significantly Enhanced Visible-Light Photocatalytic Activity for H2 Evolution

Zhiyong Mao, Jingjing Chen, Yanfang Yang, Dajian Wang, Lijian Bie, Bradley D. Fahlman

Research output: Contribution to journalArticlepeer-review

223 Scopus citations

Abstract

Novel g-C3N4/CoO nanocomposite application for photocatalytic H2 evolution were designed and fabricated for the first time in this work. The structure and morphology of g-C3N4/CoO were investigated by a wide range of characterization methods. The obtained g-C3N4/CoO composites exhibited more-efficient utilization of solar energy than pure g-C3N4 did, resulting in higher photocatalytic activity for H2 evolution. The optimum photoactivity in H2 evolution under visible-light irradiation for g-C3N4/CoO composites with a CoO mass content of 0.5 wt % (651.3 μmol h-1 g-1) was up to 3 times as high as that of pure g-C3N4 (220.16 μmol h-1 g-1). The remarkably increased photocatalytic performance of g-C3N4/CoO composites was mainly attributed to the synergistic effect of the junction or interface formed between g-C3N4 and CoO.

Original languageEnglish
Pages (from-to)12427-12435
Number of pages9
JournalACS Applied Materials and Interfaces
Volume9
Issue number14
DOIs
StatePublished - Apr 12 2017

Keywords

  • H evolution
  • co-catalyst
  • g-CN/CoO nanocomposite
  • heterostructure
  • photocatalyst
  • visible light

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