Please use this identifier to cite or link to this item:
|Title:||Atomic engineering of high-density isolated Co atoms on graphene with proximal-atom controlled reaction selectivity||Authors:||Yan H.
|Issue Date:||1-Dec-2018||Publisher:||Nature Publishing Group||Citation:||Yan H., Zhao X., Guo N., Lyu Z., Du Y., Xi S., Guo R., Chen C., Chen Z., Liu W., Yao C., Li J., Pennycook S.J., Chen W., Su C., Zhang C., Lu J. (2018-12-01). Atomic engineering of high-density isolated Co atoms on graphene with proximal-atom controlled reaction selectivity. Nature Communications 9 (1) : 3197. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-018-05754-9||Abstract:||Controllable synthesis of single atom catalysts (SACs) with high loading remains challenging due to the aggregation tendency of metal atoms as the surface coverage increases. Here we report the synthesis of graphene supported cobalt SACs (Co1/G) with a tuneable high loading by atomic layer deposition. Ozone treatment of the graphene support not only eliminates the undesirable ligands of the pre-deposited metal precursors, but also regenerates active sites for the precise tuning of the density of Co atoms. The Co1/G SACs also demonstrate exceptional activity and high selectivity for the hydrogenation of nitroarenes to produce azoxy aromatic compounds, attributable to the formation of a coordinatively unsaturated and positively charged catalytically active center (Co朞朇) arising from the proximal-atom induced partial depletion of the 3d Co orbitals. Our findings pave the way for the precise engineering of the metal loading in a variety of SACs for superior catalytic activities. � 2018, The Author(s).||Source Title:||Nature Communications||URI:||http://scholarbank.nus.edu.sg/handle/10635/152068||ISSN:||2041-1723||DOI:||10.1038/s41467-018-05754-9|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
|s41467-018-05754-9.pdf||2.97 MB||Adobe PDF|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.