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2.
Synthesis of molybdenum carbide thin films for production of hydrogen via electrochemical water splitting
Cesur Altinkaya, 2018, magistrsko delo

Najdeno v: ključnih besedah
Povzetek najdenega: ...molybdenum, platinum, molybdenum carbide thin films, hydrogen evolution reaction, water splitting, electrolysis, electrochemistry, pyrolysis, thin...
Ključne besede: molybdenum, platinum, molybdenum carbide thin films, hydrogen evolution reaction, water splitting, electrolysis, electrochemistry, pyrolysis, thin films
Objavljeno: 30.08.2018; Ogledov: 2812; Prenosov: 0
.pdf Polno besedilo (5,05 MB)

3.
Synthesis of tungsten carbide and platinum composite thin films for hydrogen production by electrochemical water splitting
Ali Semerci, 2018, magistrsko delo

Najdeno v: ključnih besedah
Povzetek najdenega: ...tungsten carbide, hydrogen evolution, overpotential, electro- catalyst, platinum composite...
Ključne besede: tungsten carbide, hydrogen evolution, overpotential, electro- catalyst, platinum composite
Objavljeno: 30.08.2018; Ogledov: 2187; Prenosov: 0
.pdf Polno besedilo (3,21 MB)

4.
Solvothermal synthesis of iron phosphides and their application for efficient electrocatalytic hydrogen evolution
Saim Emin, Takwa Chouki, Manel Machreki, 2020, izvirni znanstveni članek

Opis: 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.
Najdeno v: ključnih besedah
Ključne besede: Solvothermal synthesis, Iron phosphide, Electrocatalyst, Hydrogen evolution, Overpotential
Objavljeno: 20.07.2020; Ogledov: 773; Prenosov: 0
.pdf Polno besedilo (2,52 MB)

5.
Synthesis of efficient iron phosphide catalyst for electrocatalytic hydrogen generation
Takwa Chouki, D. Lazarević, B. Donkova, Saim Emin, 2021, izvirni znanstveni članek

Opis: A solvothermal synthesis of iron phosphide electrocatalysts using triphenylphosphine (TPP) as phosphorus precursor is presented. The synthetic protocol generates Fe2P/FeP phase at 350°C. After deposition of the catalyst onto graphite substrate heat-treatment at higher temperature was carried out. Annealing at 500°C under reductive atmosphere induced structural changes in the Fe2P/FeP samples which yielded a pure Fe2P phase. The electrocatalytic activity of the Fe2P catalyst was studied for hydrogen evolution reaction (HER) in 0.5 M H2SO4. The recorded overpotential for HER was about 130 mV vs. a reversible hydrogen electrode (RHE) at 10 mA cm−2
Najdeno v: ključnih besedah
Povzetek najdenega: ...the Fe2P catalyst was studied for hydrogen evolution reaction (HER) in 0.5 M H2SO4. The...
Ključne besede: solvothermal synthesis, iron phosphide, electrocatalyst, hydrogen evolution
Objavljeno: 10.05.2021; Ogledov: 272; Prenosov: 0
.pdf Polno besedilo (807,89 KB)

6.
Solvothermal synthesis of iron phosphides and their application for efficient electrocatalytic hydrogen evolution
Saim Emin, Manel Machreki, Takwa Chouki, 2020, objavljeni povzetek znanstvenega prispevka na konferenci

Opis: We report the solvothermal synthesis of iron phosphide electrocatalysts using a low-cost phosphorus precursor [1]. The synthetic protocol allows for the preparation of a 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 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). 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 sulfuric acid (H2SO4). The HER activities of the iron phosphide catalyst were found to be phase dependent. The lowest recorded overpotential of 110 mV at 10 mA cm−2 vs. a reversible hydrogen electrode was achieved with Fe2P/FeP−500°C catalyst. The present approach allows the preparation of immobilized iron phsphide catalyst onto carbon support which is essential for application purpose. The procedure developed by us is an elegant approach to tune the composition of iron phosphide catalyst and control the morphology of particles.
Najdeno v: ključnih besedah
Ključne besede: solvothermal synthesis, iron phosphide, electrocatalyst, hydrogen evolution, overpotential
Objavljeno: 13.05.2021; Ogledov: 271; Prenosov: 0
.pdf Polno besedilo (4,08 MB)

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