Enhanced Visible Light Controlled Glucose Photo-Reforming Using a Composite WO<sub>3</sub>/Ag/TiO<sub>2</sub> Photoanode: Effect of Incorporated Plasmonic Ag Nanoparticles
WO<sub>3</sub>/Ag/TiO<sub>2</sub> composite photoelectrodes were formed via the high-temperature calcination of a WO<sub>3</sub> film, followed by the sputtering of a very thin silver film and deposition of an overlayer of commercial TiO<sub>2</sub> na...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/14/24/2001 |
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| Summary: | WO<sub>3</sub>/Ag/TiO<sub>2</sub> composite photoelectrodes were formed via the high-temperature calcination of a WO<sub>3</sub> film, followed by the sputtering of a very thin silver film and deposition of an overlayer of commercial TiO<sub>2</sub> nanoparticles. These synthetic photoanodes were characterized in view of the oxidation of a model organic compound glucose combined with the generation of hydrogen at a platinum cathode. During prolonged photoelectrolysis under simulated solar light, these photoanodes demonstrated high and stable photocurrents of ca. 4 mA cm<sup>−2</sup> due, on one hand, to the occurrence of the so-called photocurrent doubling and, on the other hand, to the plasmonic effect of Ag nanoparticles. The post-photoelectrolysis analyses of the electrolyte demonstrated the formation of high-value final glucose photo-reforming products, principally gluconic acid, erythrose and formic acid. |
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| ISSN: | 2079-4991 |