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Issue 4, 2013
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Nanoscale (111) faceted rock-salt metal oxides in catalysis

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Abstract

Facet-specific growth is highly desirable for catalysts, as conversion and selectivity can be altered with increasing amounts of particular active sites. The (100) surface of a rock-salt structure is comprised of alternating oxygen anions and metal cations, similar to the (110) facet. The (111) surface differs substantially in that an ideal (111) surface would consist solely of oxygen anions or metal cations, and cannot exist as-is. However, wet chemical syntheses of MgO(111) and NiO(111) have recently been reported; theory and experiments show the (111) surface is stabilized as a hydroxylated surface. These (111) faceted metal oxides exhibit catalytic properties that differ significantly from their (100) counterparts. Here, we discuss the theory and performance of the (111) rock-salt metal oxides in catalysis, as supports, and as adsorbents.

Graphical abstract: Nanoscale (111) faceted rock-salt metal oxides in catalysis

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Publication details

The article was received on 01 Jun 2012, accepted on 18 Sep 2012 and first published on 19 Sep 2012


Article type: Minireview
DOI: 10.1039/C2CY20373A
Catal. Sci. Technol., 2013,3, 900-911

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    Nanoscale (111) faceted rock-salt metal oxides in catalysis

    C. A. Cadigan, A. R. Corpuz, F. Lin, C. M. Caskey, K. B. H. Finch, X. Wang and R. M. Richards, Catal. Sci. Technol., 2013, 3, 900
    DOI: 10.1039/C2CY20373A

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