Counteranion‐Directed, Biomimetic Control of Silica Nanostructures on Surfaces Inspired by Biosilicification Found in Diatoms

A simple change of counteranions in catalytic templates for biomimetic silicification on surfaces dictates the size of silica nanostructures formed. It is found that the charge density of the counteranions plays an important role in controlling the structures of both templates and silica in the biom...

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Published inSmall (Weinheim an der Bergstrasse, Germany) Vol. 5; no. 17; pp. 1947 - 1951
Main Authors Yang, Sung Ho, Park, Ji Hun, Cho, Woo Kyung, Lee, Hee‐Seung, Choi, Insung S.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY‐VCH Verlag 04.09.2009
Subjects
Anions - chemistry
Bacillariophyceae
Biomimetic Materials - chemistry
biomimicry
biosilicification
counteranions
Diatoms - chemistry
Diatoms - metabolism
Ion Exchange
Methacrylates
Microscopy, Atomic Force
nanoparticles
Nanostructures - chemistry
Nanostructures - ultrastructure
Nylons
Particle Size
silica
Silicon Dioxide - chemistry
Surface Properties
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Summary:A simple change of counteranions in catalytic templates for biomimetic silicification on surfaces dictates the size of silica nanostructures formed. It is found that the charge density of the counteranions plays an important role in controlling the structures of both templates and silica in the biomimetic silicification on surfaces (see image; scale bar = 500 nm).
Bibliography:This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD, KRF‐2008‐313‐C00496). We also thank Dr. Ha and Dr. Bae at the Korea Basic Science Institute for XPS analysis, and M. S. Hyun and M. H. Kim at the National Nanofab Center for SEM analysis.
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ISSN:1613-6810
1613-6829
1613-6829
DOI:10.1002/smll.200900440