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

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...

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Bibliographic Details
Published inACS applied materials & interfaces Vol. 9; no. 12; pp. 10349 - 10354
Main Authors Maitani, Masato M, Yamada, Takuya, Mashiko, Hisanori, Yoshimatsu, Kohei, Oshima, Takayoshi, Ohtomo, Akira, Wada, Yuji
Format Journal Article
LanguageEnglish
Published American Chemical Society 29.03.2017
Subjects
water splitting
pulsed laser deposition
α-Fe2O3
Co-Pi
cocatalysts
photocatalysis
interface
microwave
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Summary: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.
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ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.6b16319