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Issue 13, 2014
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The interaction of gold and silver nanoparticles with a range of anionic and cationic dyes

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Abstract

We describe the synthesis of charge-stabilised gold and silver nanoparticles by a modified Turkevich method and their interaction with a selection of cationic and anionic dyes. It was found that gold nanoparticles interact strongly with cationic dyes and in some cases enhanced absorption was observed by UV-visible spectroscopy. It is also shown that addition of cationic dyes to gold nanoparticles triggers aggregation of the nanoparticles into large, micrometre-scale clusters. Simultaneous fragmentation and agglomeration of the gold nanoparticles was observed at high concentrations of cationic dye in the solution. These effects were not observed when gold nanoparticles were mixed with anionic dyes, nor for silver nanoparticles with either cationic or anionic dyes.

Graphical abstract: The interaction of gold and silver nanoparticles with a range of anionic and cationic dyes

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Publication details

The article was received on 20 Dec 2013, accepted on 08 Feb 2014 and first published on 10 Feb 2014


Article type: Paper
DOI: 10.1039/C3CP55366C
Citation: Phys. Chem. Chem. Phys., 2014,16, 6050-6059
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    The interaction of gold and silver nanoparticles with a range of anionic and cationic dyes

    H. Kitching, A. J. Kenyon and I. P. Parkin, Phys. Chem. Chem. Phys., 2014, 16, 6050
    DOI: 10.1039/C3CP55366C

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