Microwave Effects on Co-Pi Cocatalysts Deposited on α-Fe2O3 for Application to Photocatalytic Oxygen Evolution

Masato M. Maitani, Takuya Yamada, Hisanori Mashiko, Kohei Yoshimatsu, Takayoshi Oshima, Akira Ohtomo, Yuji Wada

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We analyze the effects of microwave applied in the process of photoelectrochemical deposition of cobalt-based cocatalysts, Co-Pi, onto well-orientated flat α-Fe2O3 thin films, which were fabricated by pulsed laser deposition. As compared with conventional heating, microwave significantly affects the morphology, chemical composition, and photocatalytic activity of Co-Pi/α-Fe2O3 composite. A significant enhancement in photocurrent related to photocatalytic water oxidation is achieved by the Co-Pi catalyst prepared under microwave irradiation. This, along with its interfacial electron-transfer properties, is studied by means of electrochemical impedance spectroscopy.

Original languageEnglish
Pages (from-to)10349-10354
Number of pages6
JournalACS Applied Materials and Interfaces
Volume9
Issue number12
DOIs
Publication statusPublished - 2017 Mar 29

Keywords

  • Co-Pi
  • cocatalysts
  • interface
  • microwave
  • photocatalysis
  • pulsed laser deposition
  • water splitting
  • α-FeO

ASJC Scopus subject areas

  • Materials Science(all)

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