Photoelectrochemical behavior of molybdenum-modified nanoparticulate hematite electrodes

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Title: Photoelectrochemical behavior of molybdenum-modified nanoparticulate hematite electrodes
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.
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
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Appears in Collections:INV - GFES - Artículos de Revistas

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