Modification of BiVO                         4                         /WO                         3                          composite photoelectrodes with Al                         2                         O                         3: Via chemical vapor deposition for highly efficient oxidative H                         2                         O                         2                          production from H                         2                         O

Yuta Miyase; Soichi Takasugi; Shoji Iguchi; Yugo Miseki; Takahiro Gunji; Kotaro Sasaki; Etsuko Fujita; Kazuhiro Sayama

doi:10.1039/c8se00070k

Modification of BiVO ₄ /WO ₃ composite photoelectrodes with Al ₂ O ₃: Via chemical vapor deposition for highly efficient oxidative H ₂ O ₂ production from H ₂ O

Yuta Miyase, Soichi Takasugi, Shoji Iguchi, Yugo Miseki, Takahiro Gunji, Kotaro Sasaki, Etsuko Fujita, Kazuhiro Sayama

Brookhaven National Laboratory

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

The modification of a BiVO ₄ /WO ₃ photoelectrode with Al ₂ O ₃ by a chemical vapor deposition (CVD) method significantly improved the faradaic efficiency for H ₂ O ₂ production (FE(H ₂ O ₂ )) in the photoelectrochemical oxidation of H ₂ O. The faradaic efficiency after passing 0.9 C (after photoirradiation for 15 min using simulated solar light) was 80% using a 2.0 M KHCO ₃ aqueous solution as an electrolyte. The initial FE(H ₂ O ₂ ) (<0.02 C) was almost 100% on the Al ₂ O ₃ /BiVO ₄ /WO ₃ photoelectrode. The thin Al ₂ O ₃ layer prevents the oxidative decomposition of the produced H ₂ O ₂ into O ₂ . The applied bias photon to current efficiency (ABPE) was 2.57% based on H ₂ O ₂ and O ₂ production on the photoanode and H ₂ production on a Pt cathode. Solar light driven simultaneous H ₂ O ₂ production at the anode for H ₂ O oxidation and the cathode for O ₂ reduction was also achieved by combining a noble-metal-free biomass-derived carbon cathode without applying any external bias.

Original language	English
Pages (from-to)	1621-1629
Number of pages	9
Journal	Sustainable Energy and Fuels
Volume	2
Issue number	7
DOIs	https://doi.org/10.1039/c8se00070k
Publication status	Published - Jan 1 2018

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology

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Miyase, Y., Takasugi, S., Iguchi, S., Miseki, Y., Gunji, T., Sasaki, K., Fujita, E., & Sayama, K. (2018). Modification of BiVO ₄ /WO ₃ composite photoelectrodes with Al ₂ O ₃: Via chemical vapor deposition for highly efficient oxidative H ₂ O ₂ production from H ₂ O. Sustainable Energy and Fuels, 2(7), 1621-1629. https://doi.org/10.1039/c8se00070k

Modification of BiVO ₄ /WO ₃ composite photoelectrodes with Al ₂ O ₃ : Via chemical vapor deposition for highly efficient oxidative H ₂ O ₂ production from H ₂ O. / Miyase, Yuta; Takasugi, Soichi; Iguchi, Shoji; Miseki, Yugo; Gunji, Takahiro; Sasaki, Kotaro; Fujita, Etsuko; Sayama, Kazuhiro.

In: Sustainable Energy and Fuels, Vol. 2, No. 7, 01.01.2018, p. 1621-1629.

Research output: Contribution to journal › Article

Miyase, Y, Takasugi, S, Iguchi, S, Miseki, Y, Gunji, T, Sasaki, K, Fujita, E & Sayama, K 2018, 'Modification of BiVO ₄ /WO ₃ composite photoelectrodes with Al ₂ O ₃: Via chemical vapor deposition for highly efficient oxidative H ₂ O ₂ production from H ₂ O', Sustainable Energy and Fuels, vol. 2, no. 7, pp. 1621-1629. https://doi.org/10.1039/c8se00070k

Miyase Y, Takasugi S, Iguchi S, Miseki Y, Gunji T, Sasaki K et al. Modification of BiVO ₄ /WO ₃ composite photoelectrodes with Al ₂ O ₃: Via chemical vapor deposition for highly efficient oxidative H ₂ O ₂ production from H ₂ O. Sustainable Energy and Fuels. 2018 Jan 1;2(7):1621-1629. https://doi.org/10.1039/c8se00070k

Miyase, Yuta ; Takasugi, Soichi ; Iguchi, Shoji ; Miseki, Yugo ; Gunji, Takahiro ; Sasaki, Kotaro ; Fujita, Etsuko ; Sayama, Kazuhiro. / Modification of BiVO ₄ /WO ₃ composite photoelectrodes with Al ₂ O ₃ : Via chemical vapor deposition for highly efficient oxidative H ₂ O ₂ production from H ₂ O. In: Sustainable Energy and Fuels. 2018 ; Vol. 2, No. 7. pp. 1621-1629.

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abstract = " The modification of a BiVO 4 /WO 3 photoelectrode with Al 2 O 3 by a chemical vapor deposition (CVD) method significantly improved the faradaic efficiency for H 2 O 2 production (FE(H 2 O 2 )) in the photoelectrochemical oxidation of H 2 O. The faradaic efficiency after passing 0.9 C (after photoirradiation for 15 min using simulated solar light) was 80% using a 2.0 M KHCO 3 aqueous solution as an electrolyte. The initial FE(H 2 O 2 ) (<0.02 C) was almost 100% on the Al 2 O 3 /BiVO 4 /WO 3 photoelectrode. The thin Al 2 O 3 layer prevents the oxidative decomposition of the produced H 2 O 2 into O 2 . The applied bias photon to current efficiency (ABPE) was 2.57% based on H 2 O 2 and O 2 production on the photoanode and H 2 production on a Pt cathode. Solar light driven simultaneous H 2 O 2 production at the anode for H 2 O oxidation and the cathode for O 2 reduction was also achieved by combining a noble-metal-free biomass-derived carbon cathode without applying any external bias. ",

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