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A Chemical Synthesis of Periodic Macroporous NiO and Metallic Ni
Author(s) -
Yan Hongwei,
Blanford Christopher F.,
Holland Brian T.,
Parent Michael,
Smyrl William H.,
Stein Andreas
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199908)11:12<1003::aid-adma1003>3.0.co;2-k
Subject(s) - materials science , nanometre , porosity , metal , non blocking i/o , void (composites) , chemical engineering , solvent , colloid , nanotechnology , composite material , metallurgy , organic chemistry , chemistry , engineering , catalysis
A new and general way to prepare porous metals with highly ordered 3D arrays of void spaces is reported here. The technique involves filling the spaces between colloidal crystals in a 3D array with a metal ion solution, and removing the solvent to produce a salt skeleton. The skeleton then undergoes chemical transformation to produce a metallic framework, such as that of Ni (shown in the Figure), with pore sizes of a few hundred nanometers.