Two-step synthesis and characterization of CuFeO2 thin layers for photoelectrocatalytic applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43931727" target="_blank" >RIV/60461373:22310/25:43931727 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0013468625008771?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013468625008771?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2025.146516" target="_blank" >10.1016/j.electacta.2025.146516</a>
Alternative languages
Result language
angličtina
Original language name
Two-step synthesis and characterization of CuFeO2 thin layers for photoelectrocatalytic applications
Original language description
Delafossite, particularly CuFeO2, is an oxide material characterized by its unique crystal structure and favorable electronic properties, increasing its importance as a photocathode for hydrogen production. Its ability to efficiently absorb solar light and facilitate charge separation is crucial for photocatalytic reactions. With a suitable bandgap and stability under operational conditions, CuFeO2 can drive the photoelectrolysis of water, converting sunlight into chemical energy in the form of hydrogen. These properties position CuFeO2 as a promising candidate for renewable energy applications, contributing to sustainable hydrogen production. This study investigates the utilization of the spray pyrolysis method to deposit thin films of mixed iron and copper oxides from aqueous solutions of nitrates onto fused silica or conductive FTO glass (F-doped tin oxide on borosilicate glass) substrates. Following deposition, thermal treatment was conducted to achieve the delafossite phase, CuFeO2. The annealing process was optimized to produce phase pure crystalline CuFeO2 on a conductive substrate. We report the successful preparation of CuFeO2 on FTO through vacuum annealing at 700 °C. To compare the influence of used conditions on CuFeO2 photocathodes performance, the photoelectrochemical properties of the resulting films were evaluated using linear voltammetry, amperometry, and electrochemical impedance spectroscopy in O2-saturated electrolyte solutions. The resulting layers exhibited photocurrents of around −0.2 mA/cm2 at −0.35 V vs. Ag/AgCl. © 2025 Elsevier Ltd
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GA23-05266S" target="_blank" >GA23-05266S: Study of key factors influencing the efficiency of photoelectrochemical cells using sunlight for synthesis reactions and water purification</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ELECTROCHIMICA ACTA
ISSN
0013-4686
e-ISSN
1873-3859
Volume of the periodical
535
Issue of the periodical within the volume
neuveden
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
nestránkováno
UT code for WoS article
001656981000001
EID of the result in the Scopus database
2-s2.0-105007436839