Issue 26, 2018

Enhanced hydrogen chemisorption and spillover on non-metallic nickel subnanoclusters

Abstract

Very fine Ni nanoparticles including subnanoclusters are dispersed in zeolite-templated carbon (ZTC), by thermal decomposition (573 K) of nickelocene pre-loaded on ZTC which functions as a high-surface area support. X-ray absorption fine structure reveals that the Ni species formed by the thermal decomposition is in a unique oxidized state. It is different from nickelocene, Ni metal, or any other inorganic Ni species. The unique Ni species can dissociatively adsorb H2, and enhance the following spillover even under ambient conditions. The spillover activity of the non-metallic Ni subnanoclusters is superior to that of Ni-metal nanoparticles and even comparable to that of Pt nanoparticles.

Graphical abstract: Enhanced hydrogen chemisorption and spillover on non-metallic nickel subnanoclusters

Supplementary files

Article information

Article type
Paper
Submitted
19 Mar 2018
Accepted
26 May 2018
First published
30 May 2018

J. Mater. Chem. A, 2018,6, 12523-12531

Enhanced hydrogen chemisorption and spillover on non-metallic nickel subnanoclusters

H. Nishihara, F. Ohtake, A. Castro-Muñiz, H. Itoi, M. Ito, Y. Hayasaka, J. Maruyama, J. N. Kondo, R. Osuga and T. Kyotani, J. Mater. Chem. A, 2018, 6, 12523 DOI: 10.1039/C8TA02561D

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