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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
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Graphene-supported 2D cobalt oxides for catalytic applications
Loïc Michel1, Sécou Sall, Thierry Dintzer
1Institut de Chimie et des Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS, UMR 7515, University of Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France. caps@unistra.fr.
Faraday Discussions
|December 21, 2020
Summary
Researchers developed a novel method to create 2D cobalt oxides using graphite as a template. These 2D materials exhibit enhanced performance in low-temperature carbon monoxide oxidation catalysis.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Two-dimensional (2D) materials, particularly ultra-thin non-layered oxides, offer superior performance in energy and health applications due to their high surface-to-volume ratio.
- Synthesizing 2D oxide configurations typically involves complex, multi-step chemical processes.
Purpose of the Study:
- To develop a facile method for synthesizing 2D transition metal oxides using natural graphite as a templating matrix.
- To investigate the properties and catalytic performance of graphene-supported 2D cobalt oxides.
Main Methods:
- Synthesis of 2D cobalt oxides via sonication of cobalt nitrate and sodium borohydride using graphite as a template.
- Characterization using nitrogen physisorption, TGA, SEM/TEM, XRD, TPO/TPR, FTIR, and Raman spectroscopy.
- Comparative synthesis of 3D cobalt oxide nanocrystallites from cobalt phthalocyanine-graphene precursors.
Main Results:
- Successfully synthesized highly porous, reduced 2D cobalt oxide nanosheets and nanofilms.
- Demonstrated superior low-temperature carbon monoxide oxidation catalytic activity for graphene-supported 2D cobalt oxide nanosheets compared to 3D counterparts.
- Extensive characterization confirmed the unique structural and chemical features of the synthesized 2D materials.
Conclusions:
- Natural graphite serves as an effective template for producing 2D transition metal oxides.
- The developed 2D cobalt oxides exhibit promising catalytic activity for low-temperature CO oxidation, highlighting their potential in environmental applications.
