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Issue 17, 2018
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Stabilisation of small mono- and bimetallic gold–silver nanoparticles using calix[8]arene derivatives

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Abstract

In this paper, we report the synthesis of octa(hydroxy)-octa(mercaptobutoxy)calix[8]arene and its use as a stabiliser of nanoparticles (NPs). We show that the reduction of gold and/or silver ions in the presence of this calix[8]arene in ethanolic solutions leads to the formation of very small spherical nanoparticles (NPs) that are homogeneous in size. Confinement and cooperative effects due to the macrocyclic structure of the calix[8]arenes account for the obtained small sizes and the homogeneity. In the case of the simultaneous reduction of gold and silver ions, STEM-EDX mappings provide evidence of the formation of alloyed Au–Ag NPs stabilised by calix[8]arenes. The surface accessibility and potential catalytic applications of the NPs are tested using the reduction of 4-nitrothiophenol by NaBH4 as a model reaction.

Graphical abstract: Stabilisation of small mono- and bimetallic gold–silver nanoparticles using calix[8]arene derivatives

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Supplementary files

Article information


Submitted
17 May 2018
Accepted
04 Jul 2018
First published
05 Jul 2018

New J. Chem., 2018,42, 14128-14137
Article type
Paper

Stabilisation of small mono- and bimetallic gold–silver nanoparticles using calix[8]arene derivatives

P. Ray, M. Clément, C. Martini, I. Abdellah, P. Beaunier, J. Rodriguez-Lopez, V. Huc, H. Remita and I. Lampre, New J. Chem., 2018, 42, 14128
DOI: 10.1039/C8NJ02451K

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