Graphene as an electron mediator in tantalum oxynitride based composites z-schem photocatalytic water splitting

Zheng Wang, Jungang Hou, Shuqiang Jiao, Kai Huang, Hongmin Zhu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Increasing of electron-hole separation is crucial to the improvement in the activity of photocatalyst. Photosynthesis involving the Z-scheme mechanism provides a unique process to utilize the solar energy through effective electron hole pair separation. The effectiveness of graphene as an electron mediator for water splitting in the Z-scheme photocatalysis system is demonstrated. We show that graphene can shuttle photogenerated electrons from the TaON to CdS, hindering the rapid recombination of electron hole pairs and enhancing photocatalytic activities in the water splitting reaction under visible-light irradiation.

Original languageEnglish
Title of host publicationTMS 2013 142nd Annual Meeting and Exhibition, Annual Meeting
PublisherWiley-Blackwell
Pages17-23
Number of pages7
ISBN (Electronic)9781118663547
ISBN (Print)9781118605813
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Keywords

  • Graphene
  • Oxynitride
  • Photocatalyst
  • Visible light

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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    Wang, Z., Hou, J., Jiao, S., Huang, K., & Zhu, H. (2013). Graphene as an electron mediator in tantalum oxynitride based composites z-schem photocatalytic water splitting. In TMS 2013 142nd Annual Meeting and Exhibition, Annual Meeting (pp. 17-23). Wiley-Blackwell. https://doi.org/10.1002/9781118663547.ch3