| Autor: |
Ikeda, Shoichiro, Yamamoto, Akio, Noda, Hidetomo, Maeda, Masunobu, Ito, Kaname |
| Zdroj: |
Bulletin of the Chemical Society of Japan; September 1993, Vol. 66 Issue: 9 p2473-2477, 5p |
| Abstrakt: |
Effects of the surface treatments of p-GaP electrodes with various etchants on the photoelectroreduction of CO2were investigated in 0.1 mol dm−3KHCO3aqueous solution. The catalytic activities for CO2photoelectroreduction of p-GaP electrodes depended on the etchants and also their crystallographic orientations, (100) or (111) faces. The reduction products were only HCOO−and CO from CO2, and H2as a by-product. Aqua regia was prefer to produce HCOO−on both faces. Conc. HCl was effective for HCOO−formation on the (111) face. Although the alkaline potassium hexacyanoferrate(III) solution was effective for reducing the overpotential and increase the photocurrent, the main product was H2. Conc. HNO3was not effective. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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