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Hybrid Photoelectrocatalytic TiO2-Co3O4/Co(OH)2 Materials Prepared from Bio-Based Surfactants for Water Splitting.

ABSTRACT: The development of new photoanode materials for hydrogen production and water treatment is in full progress. In this context, hybrid TiO2-Co3O4/Co(OH)2 photoanodes prepared using the sol-gel method using biosurfactants are currently being developed by our group. The combination of TiO2 with a cobalt-based compound significantly enhances the visible absorption and electrochemical performance of thin films, which is mainly due to an increase in the specific surface area and a decrease in the charge transfer resistance on the surface of the thin films. The formation of these composites allows for a 30-fold increase in the current density when compared to cobalt-free materials, with the best TiO2-CoN0.5 sample achieving a current of 1.570 mA.cm-2 and a theoretical H2 production rate of 0.3 µmol.min-1.cm-2 under xenon illumination.

SUBMITTER: Duquet F 

PROVIDER: S-EPMC10673594 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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Hybrid Photoelectrocatalytic TiO<sub>2</sub>-Co<sub>3</sub>O<sub>4</sub>/Co(OH)<sub>2</sub> Materials Prepared from Bio-Based Surfactants for Water Splitting.

Duquet Fanny F   Flaud Valérie V   Villeneuve-Faure Christina C   Rivallin Matthieu M   Rouessac Florence F   Roualdès Stéphanie S  

Molecules (Basel, Switzerland) 20231115 22

The development of new photoanode materials for hydrogen production and water treatment is in full progress. In this context, hybrid TiO<sub>2</sub>-Co<sub>3</sub>O<sub>4</sub>/Co(OH)<sub>2</sub> photoanodes prepared using the sol-gel method using biosurfactants are currently being developed by our group. The combination of TiO<sub>2</sub> with a cobalt-based compound significantly enhances the visible absorption and electrochemical performance of thin films, which is mainly due to an increase i  ...[more]

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