Minor Impact of Ligand Shell Steric Profile on Colloidal Nanocarbon Catalysis
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CarbonColloids_Manuscript_ChemMater_revisions_Final.pdf
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2.89 MB
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Checksum (MD5)
af8288e2d85c4da2d273a98ae30c7126
Author(s)
Chu, Sterling B
Fukushima, Tomohiro
Surendranath, Yogesh
Date Issued
January 2017
Journal
Chemistry of Materials
Publisher
American Chemical Society (ACS)
Citation
Chu, Sterling B., et al. “Minor Impact of Ligand Shell Steric Profile on Colloidal Nanocarbon Catalysis.” Chemistry of Materials, vol. 29, no. 2, Jan. 2017, pp. 495–98. © 2017 American Chemical Society
Version
Author's final manuscript
Abstract
The catalytic activity of a colloidal nanoparticle is typically inhibited by the very capping agents that are required to maintain colloidal stability and catalyst dispersion. However, the relative importance of steric contributions to the observed attenuation in catalytic activity is poorly understood. Herein, we prepare colloidal graphitic carbon nanoparticles featuring covalent amide linkages to aliphatic surface capping agents of varying length. Using aerobic benzylamine oxidation as a test reaction, we find that the steric profile of the ligand shell plays a negligible role in suppressing catalytic activity relative to chemisorption interactions that alter the surface chemistry of the catalyst. The work suggests that heterostructured nanoparticles that provide distinct surface sites for ligand binding and substrate activation should allow for high colloidal stability and robust catalytic activity
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/acs.chemmater.6b04930
