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Issue 41, 2007
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Synthesis and organic modification of CoAl2O4 nanocrystals under supercritical water conditions

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Abstract

The synthesis and in situ organic surface modification of cobalt aluminate nanoparticles were carried out to change the hydrophilic surface of pigment nanoparticles to hydrophobic by using organic reagents such as R-COOH and R-NH2 along with the respective metal hydroxide as starting materials at supercritical temperature, under 30–40 MPa pressure at a rapid reaction rate. The organic ligand capping could effectively inhibit the particle growth and also control the size of the nanocrystals. The resultant nanoparticles are dispersed in a binary solvent system, where organic modified particles are dispersed well in an upper organic solvent medium.

Graphical abstract: Synthesis and organic modification of CoAl2O4 nanocrystals under supercritical water conditions

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Publication details

The article was received on 17 Apr 2007, accepted on 03 Aug 2007 and first published on 20 Aug 2007


Article type: Paper
DOI: 10.1039/B705760A
Citation: J. Mater. Chem., 2007,17, 4426-4429
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    Synthesis and organic modification of CoAl2O4 nanocrystals under supercritical water conditions

    D. Rangappa, S. Ohara, T. Naka, A. Kondo, M. Ishii and T. Adschiri, J. Mater. Chem., 2007, 17, 4426
    DOI: 10.1039/B705760A

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