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  Hands-on Guide to the Synthesis of Mesoporous Hollow Graphitic Spheres and Core–Shell Materials

Knossalla, J., Jalalpoor, D., & Schüth, F. (2017). Hands-on Guide to the Synthesis of Mesoporous Hollow Graphitic Spheres and Core–Shell Materials. Chemistry of Materials, 29(17), 7062-7072. doi:10.1021/acs.chemmater.7b02645.

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Knossalla, Johannes1, Author           
Jalalpoor, Daniel1, Author           
Schüth, Ferdi1, Author           
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1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              

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 Abstract: In this work we present a detailed preparation method for mesoporous hollow graphitic spheres (HGS) that has been developed in our laboratory over recent years. The aim of this description is to enable the reader to reproduce the procedure by highlighting important steps, conditions, and challenges during the synthesis. HGS have initially been developed as a carbon support to enhance the stability of metal catalysts in the oxygen reduction reaction (ORR) of PEM fuel cells via pore confinement. The HGS are synthesized in a multistep procedure employing a core–shell silica template, DVB as carbon source, and iron as graphitization catalyst. The silica template is removed by leaching with hydrofluoric acid yielding the mesoporous carbon support, where metal catalysts can be introduced via incipient wetness method followed by a reduction in hydrogen. The whole procedure allows high control over product parameters such as core or shell diameter and graphitization degree. Thus, it can be adapted and tuned to match the desired properties of high performance materials for various potential applications.

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Language(s): eng - English
 Dates: 2017-07-272017-09-12
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.chemmater.7b02645
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Title: Chemistry of Materials
  Abbreviation : Chem. Mater.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 29 (17) Sequence Number: - Start / End Page: 7062 - 7072 Identifier: ISSN: 0897-4756
CoNE: https://pure.mpg.de/cone/journals/resource/954925561571