Details
| Original language | English |
|---|---|
| Pages (from-to) | 12811-12823 |
| Number of pages | 13 |
| Journal | Dalton transactions |
| Volume | 46 |
| Issue number | 38 |
| Publication status | Published - 14 Oct 2017 |
Abstract
Films prepared by cold spray have potential applications as photoanodes in electrochemical water splitting and waste water purification. In the present study cold sprayed photoelectrodes produced with WO 3 (active under visible light illumination) and TiO 2 (active under UV illumination) on titanium metal substrates were investigated as photoanodes for the oxidation of water and methanol, respectively. Methanol was chosen as organic model pollutant in acidic electrolytes. Main advantages of the cold sprayed photoelectrodes are the improved metal-semiconductor junctions and the superior mechanical stability. Additionally, the cold spray method can be utilized as a large-scale electrode fabrication technique for photoelectrochemical applications. Incident photon to current efficiencies reveal that cold sprayed TiO 2/WO 3 photoanodes exhibit the best photoelectrochemical properties with regard to the water and methanol oxidation reactions in comparison with the benchmark photocatalyst Aeroxide TiO 2 P25 due to more efficient harvesting of the total solar light irradiation related to their smaller band gap energies.
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In: Dalton transactions, Vol. 46, No. 38, 14.10.2017, p. 12811-12823.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Cold sprayed WO3 and TiO2 electrodes for photoelectrochemical water and methanol oxidation in renewable energy applications
AU - Haisch, C.
AU - Schneider, J.
AU - Fleisch, M.
AU - Gutzmann, H.
AU - Klassen, T.
AU - Bahnemann, D.W.
N1 - Funding information: whereas WO3 is surely the better photocatalyst for water oxidation. This observation is supported by the IPCE spectra shown in Fig. 13 and 14.
PY - 2017/10/14
Y1 - 2017/10/14
N2 - Films prepared by cold spray have potential applications as photoanodes in electrochemical water splitting and waste water purification. In the present study cold sprayed photoelectrodes produced with WO 3 (active under visible light illumination) and TiO 2 (active under UV illumination) on titanium metal substrates were investigated as photoanodes for the oxidation of water and methanol, respectively. Methanol was chosen as organic model pollutant in acidic electrolytes. Main advantages of the cold sprayed photoelectrodes are the improved metal-semiconductor junctions and the superior mechanical stability. Additionally, the cold spray method can be utilized as a large-scale electrode fabrication technique for photoelectrochemical applications. Incident photon to current efficiencies reveal that cold sprayed TiO 2/WO 3 photoanodes exhibit the best photoelectrochemical properties with regard to the water and methanol oxidation reactions in comparison with the benchmark photocatalyst Aeroxide TiO 2 P25 due to more efficient harvesting of the total solar light irradiation related to their smaller band gap energies.
AB - Films prepared by cold spray have potential applications as photoanodes in electrochemical water splitting and waste water purification. In the present study cold sprayed photoelectrodes produced with WO 3 (active under visible light illumination) and TiO 2 (active under UV illumination) on titanium metal substrates were investigated as photoanodes for the oxidation of water and methanol, respectively. Methanol was chosen as organic model pollutant in acidic electrolytes. Main advantages of the cold sprayed photoelectrodes are the improved metal-semiconductor junctions and the superior mechanical stability. Additionally, the cold spray method can be utilized as a large-scale electrode fabrication technique for photoelectrochemical applications. Incident photon to current efficiencies reveal that cold sprayed TiO 2/WO 3 photoanodes exhibit the best photoelectrochemical properties with regard to the water and methanol oxidation reactions in comparison with the benchmark photocatalyst Aeroxide TiO 2 P25 due to more efficient harvesting of the total solar light irradiation related to their smaller band gap energies.
UR - http://www.scopus.com/inward/record.url?scp=85030646199&partnerID=8YFLogxK
U2 - 10.1039/c7dt02063e
DO - 10.1039/c7dt02063e
M3 - Article
VL - 46
SP - 12811
EP - 12823
JO - Dalton transactions
JF - Dalton transactions
SN - 1477-9226
IS - 38
ER -