Photoelectrochemical behavior of molybdenum-modified nanoparticulate hematite electrodes
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Title: | Photoelectrochemical behavior of molybdenum-modified nanoparticulate hematite electrodes |
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Authors: | Cots, Ainhoa | Cibrev, Dejan | Bonete, Pedro | Gómez, Roberto |
Research Group/s: | Grupo de Fotoquímica y Electroquímica de Semiconductores (GFES) |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Keywords: | Hematite | Nanoparticles | Molybdenum | Photoelectrochemical | Water splitting |
Knowledge Area: | Química Física |
Issue Date: | Jan-2018 |
Publisher: | Springer Berlin Heidelberg |
Citation: | Journal of Solid State Electrochemistry. 2018, 22(1): 149-156. doi:10.1007/s10008-017-3729-6 |
Abstract: | The preparation of molybdenum-modified hematite electrodes by means of chemical bath deposition and their photoelectrochemical behavior toward water oxidation are reported in this work. The addition of a molybdenum precursor to the bath solution for hematite deposition induces a remarkable change of morphology in the resulting film from (110)-oriented nanorods to polyhedral nanoparticles. Despite the resulting loss of order, by controlling the Mo/Fe molar ratio in the bath solution, a significant improvement of the water oxidation photocurrent is achieved compared to nanorod pristine hematite electrodes. Such a (photo)electrochemical enhancement is mainly explained by an effective surface state passivation in Mo-modified hematite films. FE-SEM, TEM, XRD, and XPS were employed for electrode structural and morphological characterization. |
Sponsor: | This work was supported by the MINECO of Spain (project MAT2015-71727-R FONDOS FEDER). A. C. wants to thank the University of Alicante for a predoctoral grant. D. C. is also grateful to MINECO for the award of an FPI grant. |
URI: | http://hdl.handle.net/10045/72657 |
ISSN: | 1432-8488 (Print) | 1433-0768 (Online) |
DOI: | 10.1007/s10008-017-3729-6 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © Springer-Verlag GmbH Germany 2017 |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1007/s10008-017-3729-6 |
Appears in Collections: | INV - GFES - Artículos de Revistas |
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File | Description | Size | Format | |
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2018_Cots_etal_JSolidStateElectrochem_final.pdf | Versión final (acceso restringido) | 1,13 MB | Adobe PDF | Open Request a copy |
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