Macroporous materials from crystalline single-source precursors through decomposition followed by selective leaching

Michael Rajamathi; Srinivasa Thimmaiah; Peter E. D. Morgan; Ram Seshadri

doi:10.1039/B103836M

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Michael Rajamathi,^a Srinivasa Thimmaiah,^b Peter E. D. Morgan^c and Ram Seshadri^b

Author affiliations

^a Department of Chemistry, St. Joseph's College, Bangalore, India

^b Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, India
E-mail: seshadri@sscu.iisc.ernet.in
Fax: +91 80 360 1310

^c Rockwell Science Center, 1049 Camino Dos Rios, Thousand Oaks, USA
E-mail: pemorgan@rsc.rockwell.com

Abstract

There are a number of pairs of elements A and B in the periodic table that do not form binary oxides A_xB_yO. We have used this fact to seek out crystalline precursors containing such metals that can be decomposed at elevated temperatures to form intimate mixtures of the individual oxides, A_xO and B_yO. Selective leaching of one of these oxide components from the monolithic mixture results in a macroporous material. We demonstrate this scheme by decomposing a hydroxy double salt containing Ni and Zn. The ZnO from the decomposition product can be leached out, leaving behind a macroporous NiO monolith that can be further reduced to yield porous metallic Ni.

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Article information

DOI: https://doi.org/10.1039/B103836M
Article type: Paper
Submitted: 30 Apr 2001
Accepted: 16 Jul 2001
First published: 06 Sep 2001

Download Citation

J. Mater. Chem., 2001,11, 2489-2492

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