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Issue 47, 2010
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Hollow silica nanosphere having functionalized interior surface with thin manganese oxide layer: nanoreactor framework for size-selective Lewis acid catalysis

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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

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Publication details

The article was received on 12 Aug 2010, accepted on 22 Sep 2010 and first published on 26 Oct 2010


Article type: Paper
DOI: 10.1039/C0JM02647F
Citation: J. Mater. Chem., 2010,20, 10615-10621
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    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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