| Title: | Iron phosphide electrocatalyst for renewable production of value-added products |
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| Authors: | ID Chouki, Takwa (Author)
ID Machreki, Manel (Author)
ID Rutkowska, Iwona A. (Author)
ID Rytelewska, Beata (Author)
ID Kulesza, Pawel Jozef (Author)
ID Tyuliev, Georgi (Author)
ID Harb, Moussab (Author)
ID Azofra, Luis Miguel (Author)
ID Emin, Saim (Author) |
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| Files: |  https://msng2022.gazi.edu.tr/
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.10 - Published Scientific Conference Contribution Abstract (invited lecture) |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | The electrochemical reduction reaction of the nitrate ion (NO3) to valuable ammonia (NH3) is a promising green approach. Herein, we report for the the electrocatalytic reduction of NO3 using different phases of iron phosphide. Particularly, FeP and Fe2P phases were successfully demonstrated as efficient catalysts for NH3 generation. The Fe2P catalyst exhibits the highest Faradaic efficiency (96%) for NH3 generation with a yield (0.25 mmol h−1 cm-−2) at −0.55 V vs. reversible hydrogen electrode (RHE). The recycling tests confirmed that Fe2P and FeP catalysts exhibit excellent stability during the NO3 reduction at −0.37 V vs. RHE. These results indicate that the Fe2P phase exhibits excellent performance to be deployed as an efficient noble metal-free catalyst for NH3 generation. In addition to NO3 reduction the iron phosphide phases were used in electrocatalytic H2 generation using water electrolysis. 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 lowest electrode potential of 110 mV vs. a reversible hydrogen electrode (RHE) at 10 mA cm−2 was achieved with a mixed Fe2P/FeP−500°C catalyst. |
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| Keywords: | electrochemical reduction, nitrate reduction, iron phosphide catalyst, NH3 generation |
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| Year of publishing: | 2022 |
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| Number of pages: | Str. 24 |
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| PID: | 20.500.12556/RUNG-9728  |
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| COBISS.SI-ID: | 221838595 |
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| UDC: | 53 |
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| NUK URN: | URN:SI:UNG:REP:QI4C3RP0 |
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| Publication date in RUNG: | 10.01.2025 |
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| Views: | 264 |
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| Downloads: | 1 |
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| Metadata: |    |
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