Synthesis of NiFeOx nanocatalysts from metal–organic precursors for the oxygen evolution reaction

Autor: Quyen T. Nguyen, Francois Robert, Vincent Colliere, Pierre Lecante, Karine Philippot, Jérome Esvan, Phong D. Tran, Catherine Amiens
Přispěvatelé: Laboratoire de chimie de coordination (LCC), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), University of Science and Technology of Hanoi (USTH), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), CNRS, Université de Toulouse – Paul-Sabatier, National Foundation for Science and Technology Development (NAFOSTED-Viet Nam) (grant number 103.99-2019.328), Région Occitanie (ALDOCT000355), ANR-17-CE07-0022,NobleFreeCat,Nanoparticules bimétalliques sans métal noble pour l'hydrogénation des sucres(2017)
Rok vydání: 2022
Předmět:
Zdroj: Dalton Transactions
Dalton Transactions, 2022, 51 (30), pp.11457-11466. ⟨10.1039/D2DT01370C⟩
ISSN: 1477-9234
1477-9226
DOI: 10.1039/d2dt01370c
Popis: International audience; Production of hydrogen from a renewable source that is water requires the development of sustainable catalytic processes. This implies, among others, developing efficient catalytic materials from abundant and low-cost resources and investigating their performance, especially in the oxidation of water as this half-reaction is the bottleneck of the water splitting process. For this purpose, NiFe-based nanoparticles with sizes ca. 3–4 nm have been synthesized by an organometallic approach and characterized by complementary techniques (WAXS, TEM, STEM-HAADF, EDX, XPS, and ATR-FTIR). They display a Ni core and a mixed Ni–Fe oxide shell. Once deposited onto FTO electrodes, they have been assessed in the electrocatalytic oxygen evolution reaction under alkaline conditions. Three different Ni/Fe ratios (2/1, 1/1 and 1/9) have been studied in comparison with their monometallic counterparts. The Ni2Fe1 nanocatalyst displayed the lowest overpotential (320 mV at j = 10 mA cm−2) as well as excellent stability over 16 h.
Databáze: OpenAIRE
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