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Title:Solvothermal synthesis of iron phosphides and their application for efficient electrocatalytic hydrogen evolution
Authors:ID Chouki, Takwa, Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270, Ajdovščina, Slovenia (Author)
ID Machreki, Manel, Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270, Ajdovščina, Slovenia (Author)
ID Emin, Saim, Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270, Ajdovščina, Slovenia (Author)
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Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Abstract In this paper, we present a solvothermal synthesis of iron phosphide electrocatalysts using a triphenylphosphine (TPP) precursor. The synthetic protocol generates Fe2P phase at 300 °C and FeP phase at 350 °C. To enhance the catalytic activities of obtained iron phosphide particles heat-treatments were carried out at elevated temperatures. Annealing at 500 °C under reductive atmosphere induced structural changes in the samples: (i) Fe2P provided a pure Fe3P phase (Fe3P−500 °C) and (ii) FeP transformed into a mixture of iron phosphide phases (Fe2P/FeP−500 °C). Pure Fe2P films was prepared under argon atmosphere at 450 °C (Fe2P−450 °C). The electrocatalytic activities of heat-treated Fe2P−450 °C, Fe3P−500 °C, and Fe2P/FeP−500 °C catalysts were studied for hydrogen evolution reaction (HER) in 0.5 M H2SO4. The HER activities of the iron phosphide catalyst were found to be phase dependent. The lowest electrode potential of 110 mV vs. a reversible hydrogen electrode (RHE) at 10 mA cm−2 was achieved with Fe2P/FeP−500 °C catalyst.
Keywords:Solvothermal synthesis, Iron phosphide, Electrocatalyst, Hydrogen evolution, Overpotential
Year of publishing:2020
Number of pages:10
Numbering:38
PID:20.500.12556/RUNG-5648 New window
COBISS.SI-ID:22969603 New window
DOI:https://doi.org/10.1016/j.ijhydene.2020.05.257 New window
NUK URN:URN:SI:UNG:REP:HA6M4RPU
Publication date in RUNG:20.07.2020
Views:4524
Downloads:0
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CHOUKI, Takwa, MACHREKI, Manel and EMIN, Saim, 2020, Solvothermal synthesis of iron phosphides and their application for efficient electrocatalytic hydrogen evolution. International Journal of Hydrogen Energy [online]. 2020. Vol. 38. [Accessed 8 April 2025]. DOI https://doi.org/10.1016/j.ijhydene.2020.05.257. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=5648
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Record is a part of a journal

Title:International Journal of Hydrogen Energy
Publisher:Elsevier
Year of publishing:2020

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:NI-0002
Name:A multidisciplinary approach to the treatment and application of waste water to agriculture

Licences

License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.
Licensing start date:12.07.2020

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