Chemical synthesis of periodic macroporous NiO and metallic Ni

Hongwei Yan, Christopher F. Blanford, Brian T. Holland, Michael Parent, William H. Smyrl, Andreas Stein

Research output: Contribution to journalArticlepeer-review

216 Scopus citations

Abstract

A general procedure for synthesizing macroporous metals with 250-500 nm monodisperse voids surrounded by nanocrystalline metal walls is reported. The method is based on templated precipitation and subsequent chemical conversion of the precursors to a macroporous metal or metal oxide. The metal oxide can be further converted to a purely metallic, ordered macroporous solid by complete reduction in H or to a metal-oxide/metal composite by partial reduction. The synthesis rely on filling the void spaces between close-packed spheres with liquid metal alkoxides, resins or gas phase precursors. As a result, improved performance may be possible in applications such as porous electrodes or supports for solid electrolytes.

Original languageEnglish (US)
Pages (from-to)1003-1006
Number of pages4
JournalAdvanced Materials
Volume11
Issue number12
DOIs
StatePublished - Jan 1 1999

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