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

doi:10.1021/acsami.6b16319

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 journal › Article › peer-review

32 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 language	English
Pages (from-to)	10349-10354
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	12
DOIs	https://doi.org/10.1021/acsami.6b16319
Publication status	Published - 2017 Mar 29
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsami.6b16319

Cite this

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

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.",

keywords = "Co-Pi, cocatalysts, interface, microwave, photocatalysis, pulsed laser deposition, water splitting, α-FeO",

author = "Maitani, {Masato M.} and Takuya Yamada and Hisanori Mashiko and Kohei Yoshimatsu and Takayoshi Oshima and Akira Ohtomo and Yuji Wada",

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AU - Maitani, Masato M.

AU - Yamada, Takuya

AU - Mashiko, Hisanori

AU - Yoshimatsu, Kohei

AU - Oshima, Takayoshi

AU - Ohtomo, Akira

AU - Wada, Yuji

PY - 2017/3/29

Y1 - 2017/3/29

N2 - 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.

AB - 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.

KW - Co-Pi

KW - cocatalysts

KW - interface

KW - microwave

KW - photocatalysis

KW - pulsed laser deposition

KW - water splitting

KW - α-FeO

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