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

9 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

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ASJC Scopus subject areas

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

Cite this

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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10.1039/c8se00070k