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 | |
| Publication status | Published - Jan 1 2018 |
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ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Fuel Technology
- Renewable Energy, Sustainability and the Environment
Cite this
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
}
TY - JOUR
T1 - Modification of BiVO 4 /WO 3 composite photoelectrodes with Al 2 O 3
T2 - Via chemical vapor deposition for highly efficient oxidative H 2 O 2 production from H 2 O
AU - Miyase, Yuta
AU - Takasugi, Soichi
AU - Iguchi, Shoji
AU - Miseki, Yugo
AU - Gunji, Takahiro
AU - Sasaki, Kotaro
AU - Fujita, Etsuko
AU - Sayama, Kazuhiro
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85058842979&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058842979&partnerID=8YFLogxK
U2 - 10.1039/c8se00070k
DO - 10.1039/c8se00070k
M3 - Article
VL - 2
SP - 1621
EP - 1629
JO - Sustainable Energy and Fuels
JF - Sustainable Energy and Fuels
SN - 2398-4902
IS - 7
ER -