Issue 47, 2010

Hollow silica nanosphere having functionalized interior surface with thin manganese oxide layer: nanoreactor framework for size-selective Lewis acid catalysis

Abstract

A novel selective nanoscale etching process that generated a well defined hollow nanostructure was developed by treating manganese oxide nanoparticles with a hydroxylamine solution. This selective etching process was used for exploiting a novel method of differentially functionalizing the internal surface of a hollow silica shell with a catalytically active Mn3O4 layer and creating a novel nanoreactor framework. The nanoreactor fabricated by the newly developed method catalyzed the cyanosilylation reactions of various aromatic aldehydes with size and shape selectivity. Moreover, the substrate selectivity in the cyanosilylation reactions was efficiently tuned by modifying the outer silica shell with silane coupling reagents.

Graphical abstract: Hollow silica nanosphere having functionalized interior surface with thin manganese oxide layer: nanoreactor framework for size-selective Lewis acid catalysis

Supplementary files

Article information

Article type
Paper
Submitted
12 Aug 2010
Accepted
22 Sep 2010
First published
26 Oct 2010

J. Mater. Chem., 2010,20, 10615-10621

Hollow silica nanosphere having functionalized interior surface with thin manganese oxide layer: nanoreactor framework for size-selective Lewis acid catalysis

R. M. Anisur, J. Shin, H. H. Choi, K. M. Yeo, E. J. Kang and I. S. Lee, J. Mater. Chem., 2010, 20, 10615 DOI: 10.1039/C0JM02647F

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