Electrodeposited p-type Co3O4 with high photoelectrochemical performance in aqueous medium

p-Type Co 3 O 4 photocathodes with different amounts of CuO, were synthesized on fluorine doped tin oxide (FTO) via electrodeposition from a chloride bath containing suspended starch particles. All of the fabricated samples were photoresponsive toward water splitting in 0.5 M Na 2 SO 4 under simulat...

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Bibliographic Details
Main Authors: Ebadi, M, Mat-Teridi, M. A, Sulaiman, M. Y, Basirun, W. J, Asim, N, Ludin, N. A, Ibrahim, M. A, Sopian, K
Format: Article
Language:English
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Summary:p-Type Co 3 O 4 photocathodes with different amounts of CuO, were synthesized on fluorine doped tin oxide (FTO) via electrodeposition from a chloride bath containing suspended starch particles. All of the fabricated samples were photoresponsive toward water splitting in 0.5 M Na 2 SO 4 under simulated sun-light. The PEC performance was evaluated using LSPV, chronoamperometry, and EIS techniques. The samples fabricated via the electrodeposition/anodizing/annealing process showed greater photocurrent response compared to the electrodeposition/annealing process. Among all the samples, the sample with an atomic composition% of Co: 24.9, Cu: 25.0 and O: 50.1 showed an optimum photocurrent response (∼6.5 mA cm −2 vs. SCE at −0.3 V). The structure, morphology/composition and optical response were characterized by XRD, FESEM/EDX and UV-Vis techniques, respectively. Electrofabricated p-Co 3 O 4 based electrodes have shown efficient photoelectrochemical performance at low bias potentials in aqueous medium (∼6.5 mA cm −2 vs. SCE at −0.3 V).
ISSN:2046-2069
DOI:10.1039/c5ra04008f