Light-assisted preparation of heterostructured g-C 3 N 4 /ZnO nanorods arrays for enhanced photocatalytic hydrogen performance

Jing Liu, Xiao Ting Yan, Xu Sen Qin, Si Jia Wu, Heng Zhao, Wen Bei Yu, Li Hua Chen, Yu Li, Bao Lian Su

Research output: Contribution to journalReview article

Abstract

The type II heterostructured g-C 3 N 4 /ZnO nanorods arrays (NRAs) with intimate interface connection were successfully synthesized via a light-assisted method for photocatalytic H 2 production. Such type-II heterojunction between g-C 3 N 4 and ZnO not only promotes the charge separation and transport but also extends light absorption to the visible light region. In addition, the high physicochemical stability of g-C 3 N 4 layer keeps ZnO from photocorrosion during the reaction. Consequently, the heterostructured g-C 3 N 4 /ZnO NRAs demonstrate enhanced photocatalytic H 2 performance. In particular, the highest photocatalytic activity enhancement of g-C 3 N 4 /ZnO heterostructure is 3.3 times that of ZnO NRAs with a good stability of 85% retention rate after 5 cycles. Our work here presents an effective strategy to construct heterojunction between g-C 3 N 4 and metal oxide semiconductors for significantly enhanced photocatalytic H 2 production.

Original languageEnglish
JournalCatalysis Today
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • H production
  • Heterostructured g-C N /ZnO
  • Light-assisted
  • Type II heterojunction

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