Enhanced hydrogen chemisorption and spillover on non-metallic nickel subnanoclusters

Hirotomo Nishihara, Fumihide Ohtake, Alberto Castro-Muñiz, Hiroyuki Itoi, Masashi Ito, Yuuichiroh Hayasaka, Jun Maruyama, Junko N. Kondo, Ryota Osuga, Takashi Kyotani

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)12523-12531
    Number of pages9
    JournalJournal of Materials Chemistry A
    Volume6
    Issue number26
    DOIs
    Publication statusPublished - 2018

    ASJC Scopus subject areas

    • Chemistry(all)
    • Renewable Energy, Sustainability and the Environment
    • Materials Science(all)

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