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Biomorphic Mesoporous Ce1−xZrxO2 Nanostructures Fabricated from Paper Templates

Published online by Cambridge University Press:  01 February 2011

Dickon H. L. Ng  and
Jia Li
Dickon H. L. Ng
Affiliation:
dng@phy.cuhk.edu.hk, The Chinese University of Hong Kong, Physics, Department of Physics,, The Chinese University of Hong Kong, Shatin, N. T., Nil, Hong Kong
Jia Li
Affiliation:
lijia@phy.cuhk.edu.hk, The Chinese University of Hong Kong, Department of Physics, Shatin,, N. T., Hong Kong
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Abstract

A simple and versatile procedure was developed for synthesizing biomorphic mesoporous Ce1-xZrxO2. Aqueous cerium nitrate and zirconium nitrate solutions, and paper were used as the starting materials. Under the structure-directed effect offered by the active hydroxyl radicals of the cellulose in the paper templates, porous and fibrous structures of paper were replicated by the self-assembly of Ce1-xZrxO2 nanocrystallites after the paper underwent chemical infiltration and calcinations. The product, composing of interwoven network of fibers with diameter ranging from 10 to 20 <mu>m, was a replica of the original paper structure only that each fiber was assembled by Ce1-xZrxO2 nanocrystallites with grain size of 3-10 nm. The templating function of cellulose and the mechanism in the formation of nanocrystallites were proposed.

Keywords

biomimetic (chemical reaction)CeZr
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1094: Symposium DD – From Biological Materials to Biomimetic Material Synthesis , 2008 , 1094-DD07-11
Copyright
Copyright © Materials Research Society 2008

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