English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Activating cobalt nanoparticles via the Mott-Schottky effect in nitrogen-rich carbon shells for base-free aerobic oxidation of alcohols to esters

MPS-Authors
/persons/resource/persons1057

Antonietti,  Markus
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)

2378182_s.pdf
(Supplementary material), 5MB

Citation

Su, H., Zhang, K.-X., Zhang, B., Wang, H.-H., Yu, Q.-Y., Li, X.-H., et al. (2017). Activating cobalt nanoparticles via the Mott-Schottky effect in nitrogen-rich carbon shells for base-free aerobic oxidation of alcohols to esters. Journal of the American Chemical Society, 139(2), 811-818. doi:10.1021/jacs.6b10710.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-32A1-9
Abstract
Heterogeneous catalysts of inexpensive and reusable transition-metal are attractive alternatives to homogeneous cat-alysts; the relatively low activity of transition-metal nanoparticles has become the main hurdle for their practical ap-plications. Here, the de novo design of a Mott-Schottky-type heterogeneous catalyst is reported to boost the activity of a transition-metal nanocatalyst through electron transfer at the metal/nitrogen-doped carbon interface. The Mott-Schottky catalyst of nitrogen-rich carbon-coated cobalt nanoparticles (Co@NC) was prepared through direct polycon-densation of simple organic molecules and inorganic metal salts in the presence of g-C3N4 powder. The Co@NC with controllable nitrogen content and thus tunable Fermi energy and catalytic activity exhibited a high turnover frequency (TOF) value (8.12 mol methyl benzoate mol-1 Co h-1) for the direct, base-free, aerobic oxidation of benzyl alcohols to methyl benzoate; this TOF is 30-fold higher than those of the state-of-the-art transition-metal-based nanocatalysts reported in the literature. The presented efficient Mott-Schottky catalyst can trigger the synthesis of a series of alkyl esters and even diesters in high yields.